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学者姓名：颜蔚
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Abstract ：
The large overpotential required for oxygen evolution reaction (OER) is one of the major factors limiting the efficiency of electrochemical water-electrolysis for hydrogen production. In this work, to decrease OER energy barrier and obtain low overpotential, amorphous-crystalline NiCo(OH)2 nanoplates are in-situ grown on nickel foam surface to form a catalyst-based electrode (ac-NiCo(OH)2/NF) for water-electrolysis application. As the inner amorphization of NiCo(OH)2 results in increased electron density of the metal sites, leading to the formation of tensile Ni-O bond, the coordinatively unsaturated Ni sites in the down-shift d-band centers toward Fermi level can lower the anti-bonding states. This can lead to optimized adsorption and desorption energies for oxygen-containing intermediates for OER. As expected, the prepared ac-NiCo(OH)2/NF electrode presents a low overpotential of 364 mV to deliver 1000 mA cm-2 toward OER with impressively high robust stability. When this electrocatalyst electrode serves as both the anode and cathode, the assembled anion exchange membrane (AEM) electrolyser only needs a cell voltage of 1.68 V to drive the overall water-electrolysis process at a current density of 10 mA cm-2.
Keyword ：
AEM electrolyser AEM electrolyser Amorphous-crystalline Amorphous-crystalline High current density High current density Oxygen evolution Oxygen evolution Unsaturated atoms Unsaturated atoms
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| GB/T 7714 | Ju, Shang , Liu, Yao , Pei, Maojun et al. Amorphization-induced abundant coordinatively unsaturated Ni active sites in NiCo(OH)2 for boosting catalytic OER and HER activities at high current densities for water-electrolysis [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 653 : 1704-1714 . |
| MLA | Ju, Shang et al. "Amorphization-induced abundant coordinatively unsaturated Ni active sites in NiCo(OH)2 for boosting catalytic OER and HER activities at high current densities for water-electrolysis" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 653 (2024) : 1704-1714 . |
| APA | Ju, Shang , Liu, Yao , Pei, Maojun , Shuai, Yankang , Zhai, Zibo , Yan, Wei et al. Amorphization-induced abundant coordinatively unsaturated Ni active sites in NiCo(OH)2 for boosting catalytic OER and HER activities at high current densities for water-electrolysis . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 653 , 1704-1714 . |
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Electrocatalytic C-N coupling reaction is regarded as a promising strategy for achieving clean and sustainable urea production by coreducing CO2 and nitrogen species, thus contributing to carbon neutrality and the artificial nitrogen cycle. However, restricted by the sluggish adsorption of reactants, competitive side reactions, and multistep reaction pathways, the electrochemical urea production suffers from a low urea yield rate and low selectivity so far. In order to comprehensively improve urea synthesis performance, it is crucial to develop highly efficient catalysts for electrochemical C-N coupling. In this article, the catalyst-designing strategies, C-N coupling mechanisms, and fundamental research methods are reviewed. For the coreduction of CO2 and different nitrogen species, several prevailing reaction mechanisms are discussed. With the aim of establishing the standard research system, the fundamentals of electrocatalytic urea synthesis research are introduced. The most important catalyst-designing strategies for boosting the electrocatalytic urea production are discussed, including heteroatom doping, vacancy engineering, crystal facet regulation, atom-scale modulation, alloying and heterostructure construction. Finally, the challenges and perspectives are proposed for future industrial applications of electrochemical urea production by C-N coupling. The rational design of efficient heterogeneous electrocatalysts is crucial but still very challenging for sustainable urea production at ambient conditions by coreducing CO2 and nitrogen species. In this review article, design strategies for C-N coupling electrocatalysts are emphasized-for the in-depth understanding of the structure-activity relationship and the establishment of a systematic research framework -toward this emerging field. image
Keyword ：
artificial nitrogen cycle artificial nitrogen cycle carbon neutrality carbon neutrality catalyst-designing strategies catalyst-designing strategies C-N coupling C-N coupling electrocatalytic urea synthesis electrocatalytic urea synthesis
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| GB/T 7714 | Wan, Yuchi , Zheng, Muyun , Yan, Wei et al. Fundamentals and Rational Design of Heterogeneous C-N Coupling Electrocatalysts for Urea Synthesis at Ambient Conditions [J]. | ADVANCED ENERGY MATERIALS , 2024 , 14 (28) . |
| MLA | Wan, Yuchi et al. "Fundamentals and Rational Design of Heterogeneous C-N Coupling Electrocatalysts for Urea Synthesis at Ambient Conditions" . | ADVANCED ENERGY MATERIALS 14 . 28 (2024) . |
| APA | Wan, Yuchi , Zheng, Muyun , Yan, Wei , Zhang, Jiujun , Lv, Ruitao . Fundamentals and Rational Design of Heterogeneous C-N Coupling Electrocatalysts for Urea Synthesis at Ambient Conditions . | ADVANCED ENERGY MATERIALS , 2024 , 14 (28) . |
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Carbon defects coupled with heteroatoms can asymmetrically rearrange the local electronic distribution and coordination environment of active sites, improving the catalytic selectivity and activity of a two-electron oxygen reduction reaction (2eORR). In this study, an asymmetry defective carbon (asy-DC) structure using wolfberry as the carbon source is employed to adjust the charge distribution of active sites with different degrees of asymmetry caused by N→S coordination bonds. The asymmetric region exhibits a considerable positive correlation between the asymmetry degree and adsorption energy for OOH*, presenting a volcano relation between the asymmetry degree and catalytic activity. The optimised asy-DC catalyst exhibits high selectivity and reliable activity after 12 h of stability testing. This study can provide a new reference into the origin of ORR activity and selectivity. © 2024 Elsevier B.V.
Keyword ：
2eORR 2eORR Asymmetry Asymmetry Carbon defect Carbon defect Catalytic activity Catalytic activity Charge redistribution Charge redistribution
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| GB/T 7714 | Zhai, Z. , Wang, Y.-J. , Pan, L. et al. Asymmetric structures to switch on the selective oxygen reduction to hydrogen peroxide [J]. | Journal of Alloys and Compounds , 2024 , 1003 . |
| MLA | Zhai, Z. et al. "Asymmetric structures to switch on the selective oxygen reduction to hydrogen peroxide" . | Journal of Alloys and Compounds 1003 (2024) . |
| APA | Zhai, Z. , Wang, Y.-J. , Pan, L. , Zhu, Z. , Yan, W. , Wang, B. et al. Asymmetric structures to switch on the selective oxygen reduction to hydrogen peroxide . | Journal of Alloys and Compounds , 2024 , 1003 . |
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The Liquid Antimony Anode–based Solid Oxide Fuel Cell (LAA-SOFC) represents a promising energy conversion approach for generating power using complex fuels. This study addresses the relationship between the liquid–liquid distribution of Sb-Sb2O3 and the corresponding electrochemical performance of LAA-SOFC. A 2-D axisymmetric model that incorporates the two-phase flow of Sb-Sb2O3, alongside the electric field and the chemical/electrochemical reactions is successfully developed to explore the reaction and convection characteristics of LAA in LAA-SOFC under gravitational influence. The model results indicate that the density disparity between Sb and Sb2O3 can drive convection and stratification with Sb2O3 generation fostering continuous convection within the anode. The high Peclet number suggests that the convection is the primary transport mechanism in the anode. The limited Sb2O3 reduction results in its accumulation in the upper layer, diminishing the effective reaction area and leading to a rapid decline in discharge voltage. However, the ionic conductivity of Sb2O3 at the Sb/Sb2O3 interface can facilitate approximately 10–20% of the reactions, marginally mitigating the increase in voltage loss. To offset Sb2O3 accumulation's impact on the electrochemical reactions, a horizontal tubular LAA-SOFC is designed and constructed, which can effectively sustain the discharge voltage across a broad Sb2O3 fraction range of 0–85%. © 2024 Elsevier Ltd
Keyword ：
Liquid Antimony Anode Liquid Antimony Anode Multiphysics Simulation Multiphysics Simulation Reaction-induced Convection Reaction-induced Convection Solid Oxide Fuel Cell Solid Oxide Fuel Cell Two-phase Flow Two-phase Flow
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| GB/T 7714 | Jiang, Y. , Liu, C. , Gu, X. et al. Development of liquid antimony anode-based fuel cells: Effects of reaction-induced convection on mass transfer and electrochemical performance [J]. | Energy Conversion and Management , 2024 , 319 . |
| MLA | Jiang, Y. et al. "Development of liquid antimony anode-based fuel cells: Effects of reaction-induced convection on mass transfer and electrochemical performance" . | Energy Conversion and Management 319 (2024) . |
| APA | Jiang, Y. , Liu, C. , Gu, X. , Shi, Y. , Yan, W. , Zhang, J. . Development of liquid antimony anode-based fuel cells: Effects of reaction-induced convection on mass transfer and electrochemical performance . | Energy Conversion and Management , 2024 , 319 . |
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Polyimide (PI) has been recognized as a potential organic cathode for Li-ion batteries (LIBs) due to its programmable structural design, high theoretical capacity, and resource availability. However, the poor intrinsic electrical conductivity of PI means that PI-based cathodes of LIBs have inefficient energy storage performance, especially at high current densities. In this work, the molecular structure of PI is optimized to obtain a layer-stacked crystalline PI with significantly enhanced dipoles, denoted NT-B for the first time. The dipoles in this PI are induced by the electronegative carbonyl groups from the monomer biuret and further enhanced via a π-π layer stacking effect. This work is the first to verify that the co-directional dipole enhancement effect of biuret is surprisingly different from that of monomer urea. A series of ex-situ/in-situ and theoretical DFT simulations are carried out to understand the functional mechanism of such effects. The multiple enhancement effects of the dipoles synergistically promoting the generation of a strong built-in electric field (BIEF) within NT-B are proposed based on the results obtained. It is confirmed that this BIEF plays a significant role in accelerating electron transport, which enhances the electrochemical activity of LIB cathodes. This work provides a new idea for the structural design of high-performance PI cathodes for LIBs. © 2024 Elsevier B.V.
Keyword ：
BIEF BIEF Dipoles Dipoles LIBs LIBs Organic cathode Organic cathode Polyimide Polyimide
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| GB/T 7714 | Chen, W. , Chen, Y. , Li, H. et al. Multiple enhancement effects of dipoles within polyimide cathode promoting highly efficient energy storage of lithium-ion batteries [J]. | Energy Storage Materials , 2024 , 73 . |
| MLA | Chen, W. et al. "Multiple enhancement effects of dipoles within polyimide cathode promoting highly efficient energy storage of lithium-ion batteries" . | Energy Storage Materials 73 (2024) . |
| APA | Chen, W. , Chen, Y. , Li, H. , Zhang, S. , Li, D. , Yu, F. et al. Multiple enhancement effects of dipoles within polyimide cathode promoting highly efficient energy storage of lithium-ion batteries . | Energy Storage Materials , 2024 , 73 . |
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CO and H 2 S poisoning of Pt -based catalysts for hydrogen oxidation reaction (HOR) stands as one of the longstanding hindrances to the widespread commercialization of proton exchange membrane fuel cells. In this paper, a Ru/Ti 4 O 7 catalyst is successfully synthesized by the microwave -thermal method. This Ru/Ti 4 O 7 catalyst shows a much higher noble metal mass activity than those of commercial PtRu/C and conventional Ru/C catalysts. The performance of the Ru/Ti 4 O 7 catalyst under the exist of CO or H 2 S shows insignificant current decay, which is far superior to commercial PtRu/C and Pt/C catalysts. In this Ru/Ti 4 O 7 catalyst, the electron transfer between Ru and Ti to form d -p orbital hybridization is considered to be responsible for the favorable catalytic HOR performance and the corresponding CO and H 2 S tolerance. The interaction mechanism formed by electron transfer may open a promising way for the subsequent development of anti -poisoning catalysts for PEM fuel cell hydrogen oxidation reaction.
Keyword ：
CO poisoning CO poisoning H2 H2 Hydrogen oxidation reaction Hydrogen oxidation reaction PEM fuel cell PEM fuel cell
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| GB/T 7714 | Xie, Yujie , Lian, Bianyong , Deng, Shuqi et al. Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 65 : 205-214 . |
| MLA | Xie, Yujie et al. "Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 65 (2024) : 205-214 . |
| APA | Xie, Yujie , Lian, Bianyong , Deng, Shuqi , Lin, Qingqu , Wang, Kaili , Zheng, Yun et al. Advanced Ru/Ti 4 O 7 catalyst for Tolerating CO and H 2 S poisoning to hydrogen oxidation reaction . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 65 , 205-214 . |
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In this paper, gallium nitride (GaN) nanoparticles is synthesized on the nitrogen-doped graphene (NG) (GaN@NG). X-ray absorption fine structure (XAFS) shows the distinct interfacial interaction (Ga-N/N-C). This well-designed GaN@NG shows good reversible capacity (793.2 mAh/g at 0.1 A/g) and cycling durability with 98.5 % capacity retention at 2.0 A/g after 2000 cycles. Both DFT analysis and electrochemical kinetic analysis reveal that the configuration of intriguing electron and ion bridges is able to control and tailor the interfacial interaction via the interfacial coupled chemical bonds in GaN@NG heterojunction. Such electron/ion bridges can enhance the interfacial charge transfer kinetics and prevent pulverization/aggregation via the ion/electron channel during the cycling. As expected, the lithium-ion full cell (LiFePO4/C//GaN@NG) exhibits impressive energy and power densities and maintains superior cycling stability. This electron/ion bridges-related structural engineering strategy can open opportunities for the traditional electrode material to achieve the high-performance lithium ion storage and beyond.
Keyword ：
DFT calculations DFT calculations Gallium nitride Gallium nitride Heterojunction Heterojunction Interfacial engineering Interfacial engineering Lithium-ion batteries Lithium-ion batteries
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| GB/T 7714 | Sun, Changlong , Wang, Yan-Jie , Liu, Dan et al. Tailoring interfacial interaction in GaN@NG heterojunction via electron/ ion bridges for enhanced lithium-ion storage performance [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 453 . |
| MLA | Sun, Changlong et al. "Tailoring interfacial interaction in GaN@NG heterojunction via electron/ ion bridges for enhanced lithium-ion storage performance" . | CHEMICAL ENGINEERING JOURNAL 453 (2023) . |
| APA | Sun, Changlong , Wang, Yan-Jie , Liu, Dan , Fang, Baizeng , Yan, Wei , Zhang, Jiujun . Tailoring interfacial interaction in GaN@NG heterojunction via electron/ ion bridges for enhanced lithium-ion storage performance . | CHEMICAL ENGINEERING JOURNAL , 2023 , 453 . |
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Developing efficient and durable bifunctional air-cathode catalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is one of the key efforts promoting the practical rechargeable zinc-air batteries (ZABs). In this paper, high-performance bifunctional air-cathode catalysts by a two-step strategy: atomically dispersed Ni on N-doped carbon is first derived from MOF to form uniformly dispersed NiNC, which are pyrolyzed together with Fe source at different high-temperatures to form FeNi@NC-T (T = 800, 900, and 1000 degrees C) catalysts. The as-synthesized non-noble metal FeNi@NC-900 catalyst exhibits a considerably small potential gap (Delta E) of 0.72 V between ORR and OER, which is as the same as commercial noble metal Pt/C + Ir black mixed catalyst. The performance of the ZABs using FeNi@NC-900 as the air-cathode catalyst displays a power density of 119 mW center dot cm(-2) and a specific capacity of 830.1 mAh center dot g(-1), which is superior to that of Pt/C + Ir black mixed catalyst. This work provides a guideline for designing alloy electrocatalysts with uniform size and nanoparticle distribution for metal-air batteries with bifunctional air-cathodes. (c) 2023 Elsevier Inc. All rights reserved.
Keyword ：
Bifunctional catalysts Bifunctional catalysts FeNi alloy FeNi alloy MOF MOF Nitrogen-doping Nitrogen-doping OER OER ORR ORR Zinc-air batteries Zinc-air batteries
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| GB/T 7714 | Deng, Shu-Qi , Zhuang, Zewen , Zhou, Chuang -An et al. Metal-organic framework derived FeNi alloy nanoparticles embedded in N-doped porous carbon as high-performance bifunctional air-cathode catalysts for rechargeable zinc-air battery [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 641 : 265-276 . |
| MLA | Deng, Shu-Qi et al. "Metal-organic framework derived FeNi alloy nanoparticles embedded in N-doped porous carbon as high-performance bifunctional air-cathode catalysts for rechargeable zinc-air battery" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 641 (2023) : 265-276 . |
| APA | Deng, Shu-Qi , Zhuang, Zewen , Zhou, Chuang -An , Zheng, Hui , Zheng, Sheng-Run , Yan, Wei et al. Metal-organic framework derived FeNi alloy nanoparticles embedded in N-doped porous carbon as high-performance bifunctional air-cathode catalysts for rechargeable zinc-air battery . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 641 , 265-276 . |
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Layered double hydroxide (LDH) catalysts provide promising OER activity which can be employed in overall water splitting for hydrogen production. However, their weak surface hydrogen adsorption (H-ad) and high water dissociation energy can result in the inferior hydrogen evolution reactions (HER) activity. In this paper, a highly efficient HER catalyst of F-doped NiCoMo LDH is successfully designed and synthesized through in situ growing on nickel foam (F-NiCoMo LDH/NF) for overall water splitting. DFT calculations demonstrate that the introduction of Mo and F atoms in NiCo LDH can induce the generation of anisotropic lattice strain, resulting in the generation of high-energy active interface and shifting the d-band centers. Therefore, the adsorption energy of H-ad is optimized and the water dissociation energy barrier is decreased. As a result, this F-NiCoMo LDH/NF catalyst electrode displays a low overpotential of 107.5 mV at 10 mA cm(-2) and a small Tafel slope of 67.2 mV dec(-1) for HER. The assembled electrolyzer by employing this catalyst electrode requires only 1.83 V to deliver 300 mA cm(-2) and operates stably for 100 h.
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| GB/T 7714 | Zhai, Zibo , Li, Hongwei , Zhou, Chuang-an et al. Anisotropic Strain Boosted Hydrogen Evolution Reaction Activity of F-NiCoMo LDH for Overall Water Splitting [J]. | JOURNAL OF THE ELECTROCHEMICAL SOCIETY , 2023 , 170 (3) . |
| MLA | Zhai, Zibo et al. "Anisotropic Strain Boosted Hydrogen Evolution Reaction Activity of F-NiCoMo LDH for Overall Water Splitting" . | JOURNAL OF THE ELECTROCHEMICAL SOCIETY 170 . 3 (2023) . |
| APA | Zhai, Zibo , Li, Hongwei , Zhou, Chuang-an , Zheng, Hui , Liu, Yao , Yan, Wei et al. Anisotropic Strain Boosted Hydrogen Evolution Reaction Activity of F-NiCoMo LDH for Overall Water Splitting . | JOURNAL OF THE ELECTROCHEMICAL SOCIETY , 2023 , 170 (3) . |
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For oxygen reduction reaction (ORR), replacing the conventional electrocatalysts based on platinum-group metals (PGMs) with alter-natives based on non-noble metals is vital for the large-scale appli-cations of green energy conversion and chemical synthesis. Here, we report the discovery of ORR catalysts based on the p-block-metal bismuth (Bi); the selectivity in ORR pathways could be controlled by tailoring the size of Bi. Specifically, the metallic Bi nanoparticles gave a high selectivity (>96%) for 2e- ORR, an ultra-high kinetic cur-rent density (3.8 mA$cm-2 at 0.65 V), and an excellent stability; in contrast, the single-atomic-site Bi catalysts gave a good selectivity for 4e- ORR and a corresponding half-wave potential of 0.875 V, ap-proaching that of the best-known Fe/NC catalysts. This work pre-sents new high-performance ORR catalysts based on the p-block -metal Bi, in contrast to the intensively studied d-block transition metals, and thus would provide new perspectives for developing PGM-free ORR catalysts.
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| GB/T 7714 | Zhuang, Zewen , Huang, Aijian , Tan, Xin et al. p-Block-metal bismuth-based electrocatalysts featuring tunable selectivity for high-performance oxygen reduction reaction [J]. | JOULE , 2023 , 7 (5) . |
| MLA | Zhuang, Zewen et al. "p-Block-metal bismuth-based electrocatalysts featuring tunable selectivity for high-performance oxygen reduction reaction" . | JOULE 7 . 5 (2023) . |
| APA | Zhuang, Zewen , Huang, Aijian , Tan, Xin , Sun, Kaian , Chen, Chen , Peng, Qing et al. p-Block-metal bismuth-based electrocatalysts featuring tunable selectivity for high-performance oxygen reduction reaction . | JOULE , 2023 , 7 (5) . |
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