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学者姓名:萨百晟
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Irregular Li deposition is the major reason for poor reversibility and cycle instability in Li metal batteries, even leading to safety hazards, the causes of which have been extensively explored. The structural disconnection induced by completely dissolving Li in the traditional testing protocol is a key factor accounting for irregular Li growth during the subsequent deposition process. Herein, the critical role played by the structural connectivity of electrochemical Li reservoir in subsequent Li deposition behaviors is elucidated and a morphology-performance correlation is established. The structural connection and resultant well-distributed morphology of the in situ electrochemical Li reservoir ensure efficient electron transfer and Li+ diffusion pathway, finally leading to homogenized Li nucleation and growth. Tailoring the geometry of Li reservoir can improve the coulombic efficiency and cyclability of anode-free Li metal batteries by optimizing Li deposition behavior. We elucidated that the kinetical pathway can be maintained by regulating the structural connectivity of the in situ induced electrochemical Li reservoir, which ensures efficient electron transfer and Li+ diffusion pathway. The well-distributed electrochemical Li reservoirs can serve as nucleation sites to promote uniform Li deposition and then improve the coulombic efficiency and cyclability of anode-free Li metal batteries effectively.image
Keyword :
Anode-Free Li Metal Batteries Anode-Free Li Metal Batteries Electrochemical Li Reservoir Electrochemical Li Reservoir Li Deposition Behavior Li Deposition Behavior Structural Connectivity Structural Connectivity
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GB/T 7714 | Lin, Liang , Yue, Ke , Xia, Li et al. Tailoring Li Deposition by Regulating Structural Connectivity of Electrochemical Li Reservoir in Li-metal Batteries [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (11) . |
MLA | Lin, Liang et al. "Tailoring Li Deposition by Regulating Structural Connectivity of Electrochemical Li Reservoir in Li-metal Batteries" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 63 . 11 (2024) . |
APA | Lin, Liang , Yue, Ke , Xia, Li , Yan, Xiaolin , Zheng, Hongfei , Zhang, Yinggan et al. Tailoring Li Deposition by Regulating Structural Connectivity of Electrochemical Li Reservoir in Li-metal Batteries . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (11) . |
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Rechargeable lithium-sulfur (Li-S) batteries have received ever-increasing attention owing to their ultrahigh theoretical energy density, low cost, and environmental friendliness. However, their practical application is critically plagued by the sluggish reaction kinetics, shuttling of soluble polysulfide intermediates, and uncontrollable growth of Li dendrites. Herein, a bimetallic telluride electrocatalyst with dense heterointerfaces and rich defects embedded in hollow carbon polyhedron bunches (N subset of CoTe1-x/ZnTe1-y@NC, abbreviated as NCZTC) is rationally designed to simultaneously address the S cathode and Li anode problems. Both experimental and computational results substitute the integration of dense heterointerfaces and rich defects can synergistically modulate the electronic structure, enhance the electrical conductivity, promote the Li+ transportation, strengthen the polysulfides adsorption and improve the catalytic activity, thereby significantly accelerating the redox conversion kinetics and prevent the dendrite growth. Consequently, Li-S batteries with NCZTC-modified separators demonstrate excellent electrochemical performance including high specific discharge capacity, remarkable rate capability, good long-term cycling stability, and competitive areal capacity even at high sulfur loading and lean electrolyte conditions. This study not only provides valuable guidance for designing efficient sulfur electrocatalysts with transition metal tellurides but also emphasizes the importance of heterostructure design and defect engineering for high-performance Li-S batteries. The high-efficiency N subset of CoTe1-x/ZnTe1-y@NC electrocatalyst is rationally designed for Li-S batteries. Both experimental and theoretical results substantiate that the integration of dense heterointerfaces and rich defects (Te vacancy-induced N-doping) can synergistically accelerate the sulfur conversion and protect the lithium anode from corrosion. This study provides an innovative strategy for constructing high-performance sulfur electrocatalysts with transition metal tellurides. image
Keyword :
bimetallic tellurides bimetallic tellurides defects defects electrocatalysts electrocatalysts heterointerfaces heterointerfaces lithium-sulfur batteries lithium-sulfur batteries
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GB/T 7714 | Wu, Xiangpeng , Xie, Rongjun , Cai, Daoping et al. Engineering Defect-Rich Bimetallic Telluride with Dense Heterointerfaces for High-Performance Lithium-Sulfur Batteries [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (26) . |
MLA | Wu, Xiangpeng et al. "Engineering Defect-Rich Bimetallic Telluride with Dense Heterointerfaces for High-Performance Lithium-Sulfur Batteries" . | ADVANCED FUNCTIONAL MATERIALS 34 . 26 (2024) . |
APA | Wu, Xiangpeng , Xie, Rongjun , Cai, Daoping , Fei, Ban , Zhang, Chaoqi , Chen, Qidi et al. Engineering Defect-Rich Bimetallic Telluride with Dense Heterointerfaces for High-Performance Lithium-Sulfur Batteries . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (26) . |
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Li-rich Mn-based materials (LRMs) with high energy density are promising cathode candidates for next-generation lithium-ion batteries. However, the inevitable oxygen release and electrolyte decomposition would stimulate successive interface side reactions and structure degradation, leading to rapid capacity decay. In addition, the terrible reaction kinetics of LRMs is not conducive to rate capability and low-temperature performance. Herein, a multi-functionalized full-interface integrated engineering is put forward to introduce multifunctional modification layer (including surface S, N co-doped carbon layer, near-surface gradient oxygen vacancies and the resultantly induced atomic rearrangement) at the interface of both the secondary particles and inner primary particles of LRMs. The oxygen vacancies and induced intralayer Li/Mn disorder can suppress the oxygen release. And the induced lattice-matched rock-salt phase can improve the interface structure stability. Meanwhile, the S, N co-doped carbon layer can isolate LRMs and electrolyte, alleviating the decomposition of electrolyte and the resulting structural damage to LRMs. In addition, Li+ diffusion kinetic and electric conductivity are enhanced due to oxygen vacancies and S, N co-doped carbon layer. Thus, a reliable LiF-rich cathode electrolyte interphase (CEI) film is formed, which can further reduce the interfacial side reactions upon cycling, ultimately enhancing the comprehensive electrochemical performance of LRMs. Specifically, the modified sample (HLRM) exhibits enhanced long-term cycle stability, with capacity retention of 94.8 % and 86.6 % after 100 cycles at 0.2 C and 500 cycles at 1 C, respectively. In addition, HLRM delivers elevated specific capacity and cyclic stability both at high (55 degrees C) and low (-15 degrees C) temperature. This work offers a new idea to improve the comprehensive electrochemical performance of LRMs by multi-functionalized full-interface integrated modification engineering.
Keyword :
Cycling stability Cycling stability Full -interface modification Full -interface modification Li-rich Mn-based cathode Li-rich Mn-based cathode Oxygen vacancy Oxygen vacancy Surface atomic rearrangement Surface atomic rearrangement
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GB/T 7714 | Li, Saichao , Liu, Yuanyuan , Zhang, Yinggan et al. Multi-functionalized full-interface integrated engineering towards highly reversible Li-rich Mn-based cathode [J]. | ENERGY STORAGE MATERIALS , 2024 , 66 . |
MLA | Li, Saichao et al. "Multi-functionalized full-interface integrated engineering towards highly reversible Li-rich Mn-based cathode" . | ENERGY STORAGE MATERIALS 66 (2024) . |
APA | Li, Saichao , Liu, Yuanyuan , Zhang, Yinggan , Gao, Guiyang , Guo, Weibin , Xu, Qixiang et al. Multi-functionalized full-interface integrated engineering towards highly reversible Li-rich Mn-based cathode . | ENERGY STORAGE MATERIALS , 2024 , 66 . |
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2D transition metal dichalcogenides (TMDs) have emerged as a novel class of semiconductors with promising applications in optoelectronics, owing to their rich and tunable valley fine structure, known as valleytronics. Strain engineering in TMDs presents opportunities to tailor their valley fine structures and band alignment, which greatly expands the potential to investigate their intrinsic properties and improve device performance, thus opening a new field of straintronics. In this review, recent advances in strain-engineered 2D TMDs are summarized, with a focus on new phenomena and applications enabled by precision tuning of valley physics. The underlying mechanisms and connections are delineated between strain-induced modifications to the valley fine structures based on intravalley, intervalley, and interlayer band alignment in single and heterostructure TMDs. These insights allow targeted strain control strategies to be devised for optimizing optoelectronic characteristics. This review provides perspectives and guidance on the future directions of valley-straintronics and flexible 2D optoelectronics using TMDs, highlighting the substantial promise of valley-strain engineering in TMDs for fundamental valley physics studies as well as practical device applications. Presenting a comprehensive review on recent advancements in strain-engineered 2D transition metal dichalcogenides (TMDs). This review delves into precision tuning of valley physics through strain engineering, elucidating mechanisms and connections between strain-induced modifications and optoelectronic characteristics. It offers insights into future directions of valley-straintronics, underscoring the significant promise of valley-strain engineering in TMDs for fundamental studies and practical applications. image
Keyword :
2D semiconductors 2D semiconductors straintronics straintronics transition metal dichalcogenides transition metal dichalcogenides valley fine structure valley fine structure valleytronics valleytronics
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GB/T 7714 | Yang, Shichao , Long, Hanyan , Chen, Wenwei et al. Valleytronics Meets Straintronics: Valley Fine Structure Engineering of 2D Transition Metal Dichalcogenides [J]. | ADVANCED OPTICAL MATERIALS , 2024 , 12 (14) . |
MLA | Yang, Shichao et al. "Valleytronics Meets Straintronics: Valley Fine Structure Engineering of 2D Transition Metal Dichalcogenides" . | ADVANCED OPTICAL MATERIALS 12 . 14 (2024) . |
APA | Yang, Shichao , Long, Hanyan , Chen, Wenwei , Sa, Baisheng , Guo, Zhiyong , Zheng, Jingying et al. Valleytronics Meets Straintronics: Valley Fine Structure Engineering of 2D Transition Metal Dichalcogenides . | ADVANCED OPTICAL MATERIALS , 2024 , 12 (14) . |
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van der Waals (vdW) superlattices, comprising different 2D materials aligned alternately by weak interlayer interactions, offer versatile structures for the fabrication of novel semiconductor devices. Despite their potential, the precise control of optoelectronic properties with interlayer interactions remains challenging. Here, we investigate the discrepancies between the SnS/TiS2 superlattice (SnTiS3) and its subsystems by comprehensive characterization and DFT calculations. The disappearance of certain Raman modes suggests that the interactions alter the SnS subsystem structure. Specifically, such structural changes transform the band structure from indirect to direct band gap, causing a strong PL emission (similar to 2.18 eV) in SnTiS3. In addition, the modulation of the optoelectronic properties ultimately leads to the unique phenomenon of thermally activated photoluminescence. This phenomenon is attributed to the inhibition of charge transfer induced by tunable intralayer strains. Our findings extend the understanding of the mechanism of interlayer interactions in van der Waals superlattices and provide insights into the design of high-temperature optoelectronic devices.
Keyword :
interlayer interactions interlayer interactions photoluminescence photoluminescence SnTiS3 SnTiS3 temperature-dependent temperature-dependent van der Waals heterostructures van der Waals heterostructures
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GB/T 7714 | Huang, Siting , Bai, Jiahui , Long, Hanyan et al. Thermally Activated Photoluminescence Induced by Tunable Interlayer Interactions in Naturally Occurring van der Waals Superlattice SnS/TiS2 [J]. | NANO LETTERS , 2024 , 24 (20) : 6061-6068 . |
MLA | Huang, Siting et al. "Thermally Activated Photoluminescence Induced by Tunable Interlayer Interactions in Naturally Occurring van der Waals Superlattice SnS/TiS2" . | NANO LETTERS 24 . 20 (2024) : 6061-6068 . |
APA | Huang, Siting , Bai, Jiahui , Long, Hanyan , Yang, Shichao , Chen, Wenwei , Wang, Qiuyan et al. Thermally Activated Photoluminescence Induced by Tunable Interlayer Interactions in Naturally Occurring van der Waals Superlattice SnS/TiS2 . | NANO LETTERS , 2024 , 24 (20) , 6061-6068 . |
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Designing Z-scheme van der Waals (vdW) heterostructured photocatalysts is a promising strategy for developing highly efficient overall water splitting. Herein, by employing density functional theory calculations, we systematically investigated the stability, electronic structures, photocatalytic and optical properties of Al2SeTe, GaSe, and InS monolayers and their corresponding vdW heterostructures. Interestingly, electronic structures show that all vdW heterostructures have direct band gaps, which is conducive to the transition of electrons from the valence band to the conduction band. Notably, Al2TeSe/GaSe and Al2TeSe/InS vdW heterostructures possess large overpotentials for Z-scheme photocatalytic water splitting, as proved by the results of band edge positions and band structure bending. Moreover, these vdW heterostructures exhibit good optical absorption in ultraviolet and visible light regions. We believe that our findings will open a new avenue for the modulation and development of Al2TeSe/GaSe and Al2TeSe/InS vdW heterostructures for photocatalytic water splitting.
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GB/T 7714 | Guo, Shaoying , Cui, Zhou , Zou, Yanhui et al. Z-scheme Al2SeTe/GaSe and Al2SeTe/InS van der Waals heterostructures for photocatalytic water splitting [J]. | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2024 , 26 (6) : 5368-5376 . |
MLA | Guo, Shaoying et al. "Z-scheme Al2SeTe/GaSe and Al2SeTe/InS van der Waals heterostructures for photocatalytic water splitting" . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS 26 . 6 (2024) : 5368-5376 . |
APA | Guo, Shaoying , Cui, Zhou , Zou, Yanhui , Sa, Baisheng . Z-scheme Al2SeTe/GaSe and Al2SeTe/InS van der Waals heterostructures for photocatalytic water splitting . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2024 , 26 (6) , 5368-5376 . |
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Metallic zinc is an excellent anode material for Zn-ion batteries, but the growth of Zn dendrite severely hinders its practical application. Herein, an efficient and economical cationic additive, poly dimethyl diallyl ammonium (PDDA) was reported, used in aqueous Zn-ion batteries electrolyte for stabilizing Zn anode. The growth of zinc dendrites can be significantly restrained by benefiting from the pronounced electrostatic shielding effect from PDDA on the Zn metal surface. Moreover, the PDDA is preferentially absorbed on Zn (002) plane, thus preventing unwanted side reactions on Zn anode. Owing to the introduction of a certain amount of PDDA additive into the common ZnSO4-based electrolyte, the cycle life of assembled Zn parallel to Zn cells (1 mA.cm(-2) and 1 mAh.cm(-2)) is prolonged to more than 1100 h. In response to the perforation issue of Zn electrodes caused by PDDA additives, the problem can be solved by combining foamy copper with zinc foil. For real application, Zn-ion hybrid supercapacitors and MnO2 parallel to Zn cells were assembled, which exhibited excellent cycling stability with PDDA additives. This work provides a new solution and perspective to cope with the dendrite growth problem of Zn anode.
Keyword :
Electrostatic shielding effect Electrostatic shielding effect PDDA PDDA Zn anode Zn anode Zn dendrites Zn dendrites
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GB/T 7714 | Zhang, Xiang-Xin , Chen, Yuan-Qiang , Lin, Chang-Xin et al. Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes [J]. | RARE METALS , 2024 , 43 (8) : 3735-3747 . |
MLA | Zhang, Xiang-Xin et al. "Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes" . | RARE METALS 43 . 8 (2024) : 3735-3747 . |
APA | Zhang, Xiang-Xin , Chen, Yuan-Qiang , Lin, Chang-Xin , Lin, Yuan-Sheng , Hu, Guo-Lin , Liu, Yong-Chuan et al. Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes . | RARE METALS , 2024 , 43 (8) , 3735-3747 . |
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Domain distribution, defect density as well as carrier transport all exert some great impact on the performance of quasi-two-dimensional (quasi -2D) perovskites light emitting diodes (PeLEDs). Herein, the novelty multifunctional metformin hydrochloride (MFCl) buried passivated layer was introduced to optimize the crystal dynamics, surface morphology, and electro-luminescent properties of the quasi -2D perovskites. On the one hand, MF ion to some extent optimized the domain distribution just by both decreasing the n = 2 phase and increasing the threedimensional (3D) phase, which facilitated the charge funnelling. On the other hand, by combining MFCl with PSS or PSS-Na, the energy level of the hole transport layer was effectively adjusted, resulting in an obvious reduction of the injection barrier. As a result, the MFCl-optimized blue quasi -2D PeLEDs with the maximum external quantum efficiency of 5.22 % was achieved, which is 3.6 times higher than that of the device without the MFCl treatment. This work provided favourable strategy for the performance enhancement of blue quasi -2D PeLEDs, in which a multifunction interface was introduced to synchronously improve the phase distribution as well as the defect passivation of quasi -2D perovskite, meanwhile all of those further promoted the charge transportation.
Keyword :
Blue emitting device Blue emitting device Multifunctional Interface Multifunctional Interface Oriented Crystallization Oriented Crystallization Quasi-2D Perovskite Quasi-2D Perovskite
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GB/T 7714 | Ye, Yuliang , Cui, Zhou , Yang, Zunxian et al. A multifunctional interface optimization strategy for efficient Quasi-2D blue perovskite Light-Emitting diodes [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 483 . |
MLA | Ye, Yuliang et al. "A multifunctional interface optimization strategy for efficient Quasi-2D blue perovskite Light-Emitting diodes" . | CHEMICAL ENGINEERING JOURNAL 483 (2024) . |
APA | Ye, Yuliang , Cui, Zhou , Yang, Zunxian , Zeng, Zhiwei , Meng, Zongyi , Hong, Hongyi et al. A multifunctional interface optimization strategy for efficient Quasi-2D blue perovskite Light-Emitting diodes . | CHEMICAL ENGINEERING JOURNAL , 2024 , 483 . |
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With rapid industrialization and economic growth, the serious environmental pollution caused by heavy metals and dyes is a pressing issue to be solved. The efficient construction of enriched active sites and porous structures is the key to obtain water purification material for pollution removal. In this study, an efficient electrostatic selfassembly strategy to achieve amino-functionalized bacterial cellulose/Ti 3 C 2 T x MXene (ABC/MX) composite with a 3D cross -linked porous structure has been proposed. Experimental characterization and theoretical calculations reveal that the successful incorporation of amino groups not only enhances the interfacial interactions between BC nanofibers and Ti 3 C 2 T x nanosheets, but also increases the active sites available for adsorption. The results highlight that the ABC/MX composite exhibits exceptional removal efficiency, with maximum adsorption capacities of 200.7 mg/g for Cr(VI) and 1103.7 mg/g for Congo red (CR). In particular, it reveals that the multifaceted adsorption processes of Cr(VI) and CR involve electrostatic interactions, reduction reactions, chelation, and hydrogen bonding effects. These findings highlight a versatile strategy for synthesizing BC -based adsorbents with remarkable adsorption properties and are suitable for practical wastewater treatment applications.
Keyword :
Absorption Absorption Bacterial cellulose Bacterial cellulose Congo red Congo red Cr(VI) Cr(VI) Density functional theory Density functional theory MXene MXene
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GB/T 7714 | Xu, Yuanyuan , Zhang, Zhiyuan , Cui, Zhou et al. Enhanced interfacial interactions and enriched active sites in self-assembly amino-functionalized bacterial cellulose/MXene composite for wastewater treatment [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 488 . |
MLA | Xu, Yuanyuan et al. "Enhanced interfacial interactions and enriched active sites in self-assembly amino-functionalized bacterial cellulose/MXene composite for wastewater treatment" . | CHEMICAL ENGINEERING JOURNAL 488 (2024) . |
APA | Xu, Yuanyuan , Zhang, Zhiyuan , Cui, Zhou , Luo, Lijin , Lin, Peng , Xie, Maojie et al. Enhanced interfacial interactions and enriched active sites in self-assembly amino-functionalized bacterial cellulose/MXene composite for wastewater treatment . | CHEMICAL ENGINEERING JOURNAL , 2024 , 488 . |
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The existence of Ge vacancy induces an inherently hole concentration up to 1021 cm−3 in pristine thermoelectric GeTe, which results in a need of ∼10 % aliovalent dopants for optimization. However, the extra carrier scattering by the dopants would notably deteriorate the carrier mobility. In this work, CuSbTe2-alloying is revealed to increase the formation energy of Ge-vacancy, leading to a rapid reduction in hole concentration down to 1.3 × 1020 cm−3 but with a mobility above 100 cm2/V-s. Along with a further Pb-substitution at Ge sites for lattice thermal conductivity reduction and band alignment, a peak figure of merit zT of ∼2.4 at 625 K is eventually realized in the rhombohedral structure, leading to a specific power density of as high as 70 W/m and a conversion efficiency of ∼10 % under a temperature difference of 302 K. This illustrates r-GeTe as truly efficient thermoelectrics particularly for low-grade heat recovery applications. © 2024
Keyword :
Conversion efficiency Conversion efficiency Germanium Germanium Germanium alloys Germanium alloys Germanium compounds Germanium compounds Hole concentration Hole concentration Hole mobility Hole mobility Thermal conductivity Thermal conductivity Waste heat Waste heat
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GB/T 7714 | Qi, Xia , Xiong, Rui , Sa, Baicheng et al. Efficient rhombohedral GeTe thermoelectrics for low-grade heat recovery [J]. | Materials Today Physics , 2024 , 45 . |
MLA | Qi, Xia et al. "Efficient rhombohedral GeTe thermoelectrics for low-grade heat recovery" . | Materials Today Physics 45 (2024) . |
APA | Qi, Xia , Xiong, Rui , Sa, Baicheng , Zhang, Xinyue , Li, Wen , Pei, Yanzhong . Efficient rhombohedral GeTe thermoelectrics for low-grade heat recovery . | Materials Today Physics , 2024 , 45 . |
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