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学者姓名:陈俊锋

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Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater SCIE
期刊论文 | 2025 , 21 (15) | SMALL
Abstract&Keyword Cite Version(3)

Abstract :

The development of efficient and stable electrocatalysts for the hydrogen evolution reaction (HER) is essential for the realization of effective hydrogen production via seawater electrolysis. Herein, the study has developed a simple method that combines electrospinning with subsequent thermal shock technology to effectively disperse ruthenium nanoparticles onto highly conductive titanium carbide nanofibers (Ru@TiC). The electronic metal-support interactions (EMSI) resulted from charge redistribution at the interface between the Ru nanoparticles and the TiC support can optimize hydrogen desorption kinetics of Ru sites and induce the hydrogen spillover phenomenon, thereby improving hydrogen evolution. As a result, the Ru@TiC catalyst exhibits outstanding HER activity, requiring low overpotentials of only 65 mV in alkaline seawater at the current density of 100 mA cm-2. Meanwhile, Ru@TiC demonstrates excellent stability, maintaining consistent operation at 500 mA cm(-2) for at least 250 hours. Additionally, an anion exchange membrane electrolyzer incorporating Ru@TiC operated continuously for over 500 hours at 200 mA cm-2 in alkaline seawater. This study highlights the significant potential of robust TiC supports in the fabrication of efficient and enduring electrocatalysts that enhance hydrogen production in complex seawater environments.

Keyword :

alkaline seawater electrolysis alkaline seawater electrolysis desorption kinetics desorption kinetics electronic metal-support interactions electronic metal-support interactions ruthenium nanoparticles ruthenium nanoparticles titanium carbide nanofibers titanium carbide nanofibers

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GB/T 7714 Sun, Junwei , Wang, Zhichao , Wang, Yue et al. Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater [J]. | SMALL , 2025 , 21 (15) .
MLA Sun, Junwei et al. "Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater" . | SMALL 21 . 15 (2025) .
APA Sun, Junwei , Wang, Zhichao , Wang, Yue , Song, Yanyan , Pei, Yi , Yan, Wensheng et al. Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater . | SMALL , 2025 , 21 (15) .
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Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater EI
期刊论文 | 2025 , 21 (15) | Small
Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater Scopus
期刊论文 | 2025 , 21 (15) | Small
Modulation of Hydrogen Desorption Capability of Ruthenium Nanoparticles via Electronic Metal-Support Interactions for Enhanced Hydrogen Production in Alkaline Seawater Scopus
期刊论文 | 2025 , 21 (15) | Small
Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate SCIE
期刊论文 | 2025 , 60 (14) , 6387-6401 | JOURNAL OF MATERIALS SCIENCE
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Abstract :

This study investigates the effects of different annealing parameters on the microstructure, texture, and mechanical properties of hot-rolled pure yttrium plates using electron backscatter diffraction for the first time. With the increase of annealing temperature and time, the volume fraction of low-angle grain boundaries of hot-rolled pure yttrium plate decreases. While the intensity of the texture firstly decreases and then increases. During annealing at 600 degrees C, the {0002} pole density shifted from deviating from the normal direction (ND) by similar to 30 degrees to being in line with the ND as the annealing time increased, forming a typical basal texture. This can be attributed to its unique recrystallization mechanism. The strength and hardness of the as-annealed samples were significantly lower than that under the hot-rolled state, while the elongation increased when compared with the hot-rolled sample. The considerable mechanical properties of pure yttrium plate are obtained by hot rolling and following annealing at 600 degrees C for 1 h.

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GB/T 7714 Ruan, Wei , Luo, Linguang , Li, Jiajie et al. Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate [J]. | JOURNAL OF MATERIALS SCIENCE , 2025 , 60 (14) : 6387-6401 .
MLA Ruan, Wei et al. "Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate" . | JOURNAL OF MATERIALS SCIENCE 60 . 14 (2025) : 6387-6401 .
APA Ruan, Wei , Luo, Linguang , Li, Jiajie , Deng, Liping , Wang, Chen , Chen, Junfeng et al. Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate . | JOURNAL OF MATERIALS SCIENCE , 2025 , 60 (14) , 6387-6401 .
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Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate EI
期刊论文 | 2025 , 60 (14) , 6387-6401 | Journal of Materials Science
Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate Scopus
期刊论文 | 2025 | Journal of Materials Science
Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior SCIE
期刊论文 | 2025 , 500 | SURFACE & COATINGS TECHNOLOGY
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Abstract :

In order to achieve in-situ growth of layered double hydroxides (LDH) film on plasma electrolytic oxidation (PEO) coating of AZ31B magnesium alloy under mild conditions, a facile method was used in this work, that is ethylenediaminetetraacetic acid (EDTA)-assisted growth method. Compared to the conventional hydrothermal method, the fabrication of LDH/PEO composite coating by this method does not require a high temperature and high pressure environment and is not constrained by the size of the reactor. Furthermore, the obtained LDH/PEO composite coating exhibits enhanced corrosion protection, which will be widely applied in corrosion protection field of surface engineering. In this work, an effective strategy to control the dissolution of PEO coating and the growth of LDH film by regulating the concentration of EDTA was proposed, after revealing the growth behavior of LDH on PEO coating during this facile fabrication process. The growth behavior of LDH film can be briefly summarized in three stages: PEO coating dissolution, LDH nucleation, and LDH growth. Interestingly, the growth mechanism of LDH was changed with EDTA assistance. LDH shifted from preferential growth within the micropores of the PEO coating to uniform growth. With the assistance of 0.06 M EDTA, which is optimal, the dissolution of original PEO coating provided a stable and sufficient Mg source for the growth of LDH film, resulting in a dense LDH network structure on the PEO coating. This uniformly grown LDH film could not only seal the inherent defects of the PEO coating but also exhibited the ability to adsorb corrosive anions, which increases the tortuosity and difficulty in penetration of corrosive media, significantly improving the corrosion resistance of the LDH/PEO composite coating.

Keyword :

AZ31B Mg alloy AZ31B Mg alloy Coating growth mechanism Coating growth mechanism Corrosion protection Corrosion protection EDTA EDTA Layered double hydroxides Layered double hydroxides Plasma electrolytic oxidation Plasma electrolytic oxidation

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GB/T 7714 Qiu, Wenyi , Ye, Xinglong , Liu, Yan et al. Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior [J]. | SURFACE & COATINGS TECHNOLOGY , 2025 , 500 .
MLA Qiu, Wenyi et al. "Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior" . | SURFACE & COATINGS TECHNOLOGY 500 (2025) .
APA Qiu, Wenyi , Ye, Xinglong , Liu, Yan , Lin, Bin , Chen, Junfeng , Xiao, Lei et al. Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior . | SURFACE & COATINGS TECHNOLOGY , 2025 , 500 .
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Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior EI
期刊论文 | 2025 , 500 | Surface and Coatings Technology
Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior Scopus
期刊论文 | 2025 , 500 | Surface and Coatings Technology
Preparation and Wear-Resistant Mechanism of Highly Wear-Resistant GNPs/AlSi10Mg Composites EI
期刊论文 | 2025 , 54 (4) , 952-963 | Rare Metal Materials and Engineering
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Abstract :

Through the surface modification of graphene nanoparticles (GNPs) by ethyl cellulose (EC), combined with solution ultrasonic dispersion and wet ball milling, GNPs and aluminum matrix were uniformly mixed and GNPs damage was suppressed. Then, highly wear-resistant GNPs/AlSi10Mg composites were prepared by the suppression of interfacial reaction through rapid sintering with discharge plasma. The microstructure and wear-resistant properties of GNPs/AlSi10Mg composites were characterized and analyzed by scanning electron microscope, transmission electron microscope and friction testing machine. The results show that moderate addition of GNPs can effectively improve the mechanical properties of the composites. When the addition amount of GNPs is 0.5wt%, the wear rate and coefficient of friction of the composites are the lowest, which are 7.8×10-4 mm3/(N·m) and 0.417, respectively. The wear rate is reduced by 28.4% compared with that of the matrix material (10.9×10-4 mm3·N-1·m-1). The wear mechanism of GNPs/AlSi10Mg composites is mainly abrasive wear, accompanied by slight oxidative wear and adhesive wear. During the friction process, when the composite specimen is in contact with the dyad, GNPs emerge on the surface to form a thin film under the action of shear force, which can be used as a lubricant to reduce the contact point between the dyad and the matrix, preventing excessive spalling and delamination and thereby protecting the matrix. © 2025 Science Press. All rights reserved.

Keyword :

Ball milling Ball milling High resolution transmission electron microscopy High resolution transmission electron microscopy Metallic matrix composites Metallic matrix composites Sintering Sintering Spalling Spalling Ultrasonic applications Ultrasonic applications Ultrasonic dispersion Ultrasonic dispersion Wear of materials Wear of materials

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GB/T 7714 Yang, Yan , Han, Xinyang , Qiu, Yuxiao et al. Preparation and Wear-Resistant Mechanism of Highly Wear-Resistant GNPs/AlSi10Mg Composites [J]. | Rare Metal Materials and Engineering , 2025 , 54 (4) : 952-963 .
MLA Yang, Yan et al. "Preparation and Wear-Resistant Mechanism of Highly Wear-Resistant GNPs/AlSi10Mg Composites" . | Rare Metal Materials and Engineering 54 . 4 (2025) : 952-963 .
APA Yang, Yan , Han, Xinyang , Qiu, Yuxiao , Lin, Bin , Chen, Junfeng , Chen, Yulong et al. Preparation and Wear-Resistant Mechanism of Highly Wear-Resistant GNPs/AlSi10Mg Composites . | Rare Metal Materials and Engineering , 2025 , 54 (4) , 952-963 .
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Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion SCIE
期刊论文 | 2025 , 35 , 3968-3979 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
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Abstract :

The near-alpha Ti60 alloy, renowned for its exceptional high-temperature performance, is highly sought after for aerospace applications. This study optimized the laser powder bed fusion (LPBF) parameters to fabricate Ti60 alloy with a density approaching 99.84 %. The rapid solidification process inherent to LPBF results in an ultrafine martensitic microstructure within the Ti60 alloy, characterized by the presence of intricate alpha ' martensite laths within the (3 columnar grains. The alloy's crystallographic structure is distinguished by a high density of dislocations and twins, which significantly augment its mechanical properties at both ambient and elevated temperatures. At room temperature, the alloy exhibits a tensile strength of 1402 MPa coupled with a elongation of 12.3 %. At 600 degrees C, these values increase to 686 MPa and 25.6 % elongation, respectively. These findings have the potential to significantly advance the application of LPBF-ed Ti60 alloy in the aerospace sector, while also offering a pivotal reference for the additive manufacturing of other high-performance titanium alloys.

Keyword :

Laser powder bed fusion Laser powder bed fusion Mechanical properties Mechanical properties Microstructure Microstructure Ti60 alloy Ti60 alloy

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GB/T 7714 Chi, Shan , Zhu, Rongtao , Du, Peng et al. Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion [J]. | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2025 , 35 : 3968-3979 .
MLA Chi, Shan et al. "Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion" . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 35 (2025) : 3968-3979 .
APA Chi, Shan , Zhu, Rongtao , Du, Peng , Yuan, Bo , Peng, Can , Zhang, Liang et al. Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2025 , 35 , 3968-3979 .
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Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion EI
期刊论文 | 2025 , 35 , 3968-3979 | Journal of Materials Research and Technology
Enhanced mechanical properties of near-α Ti60 alloy by laser powder bed fusion Scopus
期刊论文 | 2025 , 35 , 3968-3979 | Journal of Materials Research and Technology
Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites SCIE
期刊论文 | 2024 , 166 | INTERMETALLICS
WoS CC Cited Count: 1
Abstract&Keyword Cite Version(2)

Abstract :

The in-house fabricated quasi-network Ti5Si3/TiAl composites showed an excellent combination between light weight and superior high temperature tensile properties in our previous work. However, the deformability was another key factor which determined the Ti5Si3/TiAl composites' potential for high temperature applications in aeronautics and aerospace. Therefore, in this paper the hot deformation behaviors of the novel quasi-network Ti5Si3/TiAl composites at temperatures from 900( degrees)C to 1200( degrees)C with strain rates in the range of 0.001-1 s(-1 )was systemically investigated. The results showed that the peak flow stress decreased with the increase in the test temperature and the decrease in the strain rate. The thermal compressive deformation constitutive equation was built, and hence the deformation activation energy of the quasi-network Ti5Si3/TiAl composite was confirmed to be 564.67 kJ/mol, slightly higher than or similar to the TiAl-based alloys fabricated by traditional casting or powder metallurgy. According to the dynamic material model (DMM), the hot processing maps with the true strain of 0.2-0.5 were established. It can be concluded that the instability area was mainly concentrated in the region of low temperature and high strain rate. Combined with the microstructural analysis, the optimal hot processing parameters were the temperature range of 1125-1200( degrees)C and the strain rate of 0.001-0.01 s(-1), where a large proportion of dynamic recrystallization occurred. It was noteworthy that the introduction of Ti5Si3 particles was conducive to accelerating the dynamic recrystallization and limiting the dynamic recrystallization grain growth. Besides, the distribution and size of Ti(5)Si(3 )particles could be regulated by the hot deformation. Finally, the microstructure evolution mechanism in the hot deformation was discussed in detail, this additionally provided the guidance for the practical plastic forming.

Keyword :

Deformation activation energy Deformation activation energy Dynamic recrystallization Dynamic recrystallization Hot processing map Hot processing map Quasi-network structure Quasi-network structure Ti (5) Si- 3 /TiAl composite Ti (5) Si- 3 /TiAl composite

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GB/T 7714 Gao, Naonao , Cui, Xiping , Luo, Jiawei et al. Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites [J]. | INTERMETALLICS , 2024 , 166 .
MLA Gao, Naonao et al. "Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites" . | INTERMETALLICS 166 (2024) .
APA Gao, Naonao , Cui, Xiping , Luo, Jiawei , Zhai, Xiangxin , Zhang, Taiquan , Wang, Zhiqi et al. Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites . | INTERMETALLICS , 2024 , 166 .
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Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites Scopus
期刊论文 | 2024 , 166 | Intermetallics
Hot deformation behavior and processing map of novel quasi-network Ti5Si3/TiAl composites EI
期刊论文 | 2024 , 166 | Intermetallics
Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel SCIE
期刊论文 | 2024 , 30 , 4800-4812 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
WoS CC Cited Count: 2
Abstract&Keyword Cite Version(2)

Abstract :

To achieve high thermal efficiency, today's nuclear reactor structures are exposed to higher temperatures and pressures, which requires the use of high-strength steels with specific properties, such as ODS steels. There is a need to clarify the evolution of the microstructure and properties of steels at elevated temperatures. This study systematically investigates the evolution of microstructure, texture, and mechanical property variations of 12CrODS steels after hot-rolling and subsequent annealing at 1000 degrees C and 1200 degrees C. The investigation utilizes optical microscopy, electron backscatter diffraction technique, and mechanical property measurements. The microstructure of hot-rolled samples shows a layered alternating distribution, which is distinguished by a notable presence of the alpha-fiber texture. Following annealing at 1000 degrees C, the martensite grains are smaller with a reduced hardness, while maintaining a strong alpha-fiber texture. After annealing at 1200 degrees C, there is a rapid increase in the growth of martensite grains, a significant rise in hardness, a reduction in the alpha-fiber texture characteristics, and an improvement in the gamma-fiber texture characteristics. Moreover, the maximum intensity of the alpha-fiber texture diminishes as the annealing temperature increases. The mechanical properties of the samples deteriorated after annealing at 1200 degrees C, which can be attributed to the coarse martensite grains and the texture components containing the {001} cleavage plane dominating the occurrence of brittle cleavage fracture. The 0.1Y sample after annealing at 1000 degrees C exhibits an excellent combination of strength (1458 MPa) and ductility (20.3%), which is owing to the unique heterogeneous grain structure and the evolution of favorable texture.

Keyword :

Annealing Annealing Mechanical properties Mechanical properties Microstructure characteristics Microstructure characteristics ODS steel ODS steel Texture Texture

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GB/T 7714 Li, Jiajie , Chen, Jingxian , You, Zhangjing et al. Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel [J]. | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 : 4800-4812 .
MLA Li, Jiajie et al. "Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel" . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30 (2024) : 4800-4812 .
APA Li, Jiajie , Chen, Jingxian , You, Zhangjing , Deng, Liping , Wang, Chen , Chen, Junfeng et al. Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 , 4800-4812 .
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Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel EI
期刊论文 | 2024 , 30 , 4800-4812 | Journal of Materials Research and Technology
Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel Scopus
期刊论文 | 2024 , 30 , 4800-4812 | Journal of Materials Research and Technology
Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains SCIE
期刊论文 | 2024 , 14 (10) | CRYSTALS
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Abstract :

The tension-compression yield asymmetry caused by the strengthening of Mg-Zn-Gd-Zr alloy due to extrusion deformation is an important issue that must be addressed in its application. In this study, the effects of loading direction on the tensile and compressive mechanical behaviors of Mg-5Zn-2Gd-0.2Zr alloy were systematically investigated. As the loading angle (the angle between the loading direction and the extrusion direction) increases from 0 degrees to 30 degrees, 45 degrees, 60 degrees and 90 degrees, the tensile yield strength decreases more significantly than the compressive yield strength. Consequently, the tension-compression yield asymmetry is gradually improved. Additionally, the ultimate compressive strength decreases more markedly than the ultimate tensile strength with the increment of the loading angle. In tensile tests conducted at 0 degrees, 30 degrees and 45 degrees, two distinct stages of decreasing strain hardening rates are typically observed. For the 60 degrees and 90 degrees tensile tests, one unusual ascending stage of strain hardening rate is observed. For all compressive tests, three stages of strain hardening are consistently noted; however, the increment in strain hardening rate caused by {10-12} extension twinning decreases with the increasing loading angle. A model combining loading angle and Schmid factor distribution was established. The calculated results indicate that the dominant deformation modes during the yielding process also vary significantly with the loading conditions. This clarification highlights the differences in yield strength variations between tension and compression. Finally, an analysis of the plane trace and crack propagation direction near the fracture surface reveals the fracture mechanisms associated with tensile and compressive tests at different loading directions. This study promotes understanding of the mechanical behaviors of Mg-5Zn-2Gd-0.2Zr alloy under different loading directions, and helps to thoroughly elucidate the anisotropic effects of texture on the mechanical properties of magnesium alloys.

Keyword :

fracture mechanism fracture mechanism heterogeneous grains heterogeneous grains magnesium alloy magnesium alloy strain hardening strain hardening tensile and compressive strength tensile and compressive strength

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GB/T 7714 Chen, Jieming , Xiao, Lei , Wang, Xuefang et al. Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains [J]. | CRYSTALS , 2024 , 14 (10) .
MLA Chen, Jieming et al. "Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains" . | CRYSTALS 14 . 10 (2024) .
APA Chen, Jieming , Xiao, Lei , Wang, Xuefang , Li, Zhuo , Wang, Chen , Wang, Bingshu et al. Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains . | CRYSTALS , 2024 , 14 (10) .
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Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains Scopus
期刊论文 | 2024 , 14 (10) | Crystals
Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media SCIE
期刊论文 | 2024 , 973 | JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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Abstract :

As a cost-effective alternative to Pt-based catalysts, molybdenum carbide (MoC) exhibits considerable potential for catalysing hydrogen evolution reaction (HER) in both alkaline water electrolyzers and proton exchange membrane water electrolyzers. However, achieving ampere-level current densities at low overpotentials remains challenging for MoC-based electrocatalysts. In this study, we utilized electrospinning technology followed by a subsequent heat treatment to successfully synthesize monodisperse MoC nanoparticles (approximately 4.3 nm) embedded in carbon nanofibers. The resultant self-supporting one-dimensional molybdenum carbide@nitrogendoped carbon nanofiber (MoC-A@NCNF), prepared with polyoxometalate anion (POM) and polyvinylpyrrolidone (PVP), exhibits excellent anti-aggregation behavior. Benefiting from its high specific surface area and one-dimensional conductive network structure, the MoC-A@NCNF displays outstanding hydrogen evolution reaction (HER) performance in both 1 M KOH and 0.5 M H2SO4, achieving overpotentials of 491 mV and 568 mV at a current density of 1 A cm- 2, respectively. Furthermore, it exhibits exceptional electrochemical stability during prolonged HER testing under both acidic and alkaline conditions.

Keyword :

Binder-free electrocatalyst Binder-free electrocatalyst Electrospinning Electrospinning Hydrogen evolution Hydrogen evolution MoC MoC Polyoxometalate Polyoxometalate

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GB/T 7714 Sun, Junwei , Li, Xiaoming , Wang, Yue et al. Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media [J]. | JOURNAL OF ELECTROANALYTICAL CHEMISTRY , 2024 , 973 .
MLA Sun, Junwei et al. "Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media" . | JOURNAL OF ELECTROANALYTICAL CHEMISTRY 973 (2024) .
APA Sun, Junwei , Li, Xiaoming , Wang, Yue , Yang, Juan , Luo, Hongwei , Zhang, Xiaoyan et al. Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media . | JOURNAL OF ELECTROANALYTICAL CHEMISTRY , 2024 , 973 .
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Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media EI
期刊论文 | 2024 , 973 | Journal of Electroanalytical Chemistry
Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media Scopus
期刊论文 | 2024 , 973 | Journal of Electroanalytical Chemistry
Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum-lithium alloy SCIE
期刊论文 | 2024 , 30 , 2728-2737 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
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Abstract :

In order to improve the mechanical properties and corrosion resistance of 2A97 aluminum -lithium alloy, this research develops a novel strain heat -treatment technology. Surprisingly, 2A97 alloy treated by 4% pre -strain and 48 h deep cryogenic aging exhibits excellent mechanical properties, whose yield strength, tensile strength, and elongation are 573.7 MPa, 593.6 MPa, and 14.25%, respectively. Furthermore, the corrosion resistance of samples treated by the above pre -strain deep cryogenic aging process is two times as much as traditional T6 aged. This study deeply investigates the influence of various precipitates in 2A97 alloy on its performance through microstructure analysis. The results show that the introduction of pre -strain inhibits the precipitates of the T 1 and 8 ' phases at the grain boundaries, and prevents the formation and widening of precipitate -free zones. At the same time, it reduces the potential difference between grain boundaries and matrix, and enhances the corrosion resistance of 2A97 alloy. Deep cryogenic can inhibit recovery and maintain deformation dislocation, so that a large number of defects produced by pre -strain promote the nucleation and diffusion of precipitates in the matrix, resulting in tiny and uniformly distributed precipitates. Therefore, the novel prestrain deep cryogenic aging not only endues 2A97 alloy excellent performance, but also offers a new strategy for controlling precipitation.

Keyword :

Corrosion property Corrosion property Mechanical property Mechanical property Precipitate Precipitate Pre -strain deep cryogenic aging Pre -strain deep cryogenic aging

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GB/T 7714 Liu, Yan , Zhao, Chenxu , Chen, Junfeng et al. Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum-lithium alloy [J]. | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 : 2728-2737 .
MLA Liu, Yan et al. "Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum-lithium alloy" . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30 (2024) : 2728-2737 .
APA Liu, Yan , Zhao, Chenxu , Chen, Junfeng , Liu, Rongying , Jiang, Jiantang , Cui, Xiping et al. Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum-lithium alloy . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 , 2728-2737 .
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Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum–lithium alloy Scopus
期刊论文 | 2024 , 30 , 2728-2737 | Journal of Materials Research and Technology
Effects of pre-strain deep cryogenic aging on the mechanical and corrosion properties of 2A97 aluminum–lithium alloy EI
期刊论文 | 2024 , 30 , 2728-2737 | Journal of Materials Research and Technology
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