Query：
学者姓名：陈奇俤
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
Lithium-sulfur (Li-S) batteries are promising candidates for next-generation electrochemical energy storage systems by virtue of the high energy density, low-cost, and ecofriendliness. Unfortunately, the sluggish sulfur conversion kinetics, notorious shuttle effect of lithium polysulfides (LiPSs) and severe volumetric variation during the lithiation/delithiation process result in insufficient sulfur utilization and fast capacity degradation. Herein, tungsten-doped vanadium carbide nanosheet arrays strongly coupled with a thin nitrogen-doped carbon layer directly grown on carbon cloth substrate (denoted as CC/W-VC@NC) have been conceptually designed as an advanced sulfur host to resolve the aforementioned problems. Specifically, the binder-free CC/W-VC@NC sulfur host not only strongly interacts with LiPSs, but also presents superior electrocatalytic activity for rapid LiPSs conversion. Additionally, the arrayed architecture provides sufficient space for sulfur loading and simultaneously accommodates its volumetric variation. Furthermore, theoretical calculations elucidate that tungsten doping can regulate the electronic structure, improve the electrical conductivity and strengthen the chemisorption toward LiPSs. Attributing to the multifarious advantages, Li-S batteries assembled with CC/W-VC@NC/S cathode exhibit a high initial discharge capacity of 1305.9 mAh/g at 0.1 C, as well as superior rate capability (709.8 mAh/g at 5 C) and good long-term durability (capacity decay rate of only 0.063 % per cycle over 500 cycles at 1 C). This study presents an effective approach to construct transition metal carbides as high-performance sulfur hosts for Li-S batteries. © 2024 Elsevier B.V.
Keyword ：
Binder-free Binder-free Conversion kinetics Conversion kinetics Doping Doping Lithium-sulfur batteries Lithium-sulfur batteries Sulfur hosts Sulfur hosts
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, X. , Chen, Y. , Cai, D. et al. Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries [J]. | Chemical Engineering Journal , 2024 , 498 . |
| MLA | Zhang, X. et al. "Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries" . | Chemical Engineering Journal 498 (2024) . |
| APA | Zhang, X. , Chen, Y. , Cai, D. , Zhang, C. , Chen, Q. , Zhan, H. . Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries . | Chemical Engineering Journal , 2024 , 498 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Lithium-sulfur batteries (LSBs) showcase great promise for large-scale energy storage systems, however, their practical commercialization is seriously hindered by the sluggish redox reaction kinetics and detrimental shuttle effect of soluble polysulfides. Herein, small ZnTe1-x nanoparticles with anionic vacancies firmly anchored on 3D ordered macroporous N-doped carbon skeleton (3DOM-ZnTe1-x@NC) are elaborately constructed as a high-efficiency electrocatalyst for LSBs. The ordered macroporous carbon skeleton not only greatly increases the external surface area to expose sufficient active sites but also facilitates the electrolyte penetration. Additionally, the experimental studies combined with theoretical calculations confirm the presence of Te vacancies optimizes the electronic structure to enhance the intrinsic catalytic activity and chemical absorption. Consequently, LSBs assembled with the 3DOM-ZnTe1-x@NC modified separators exhibit high specific discharge capacity, as well as superior rate performance and good long-term cycling stability. Even under a high sulfur loading of 6.5 mg cm-2 and lean electrolyte, an impressive areal capacity of 5.28 mAh cm-2 is achieved at 0.1 C after 100 cycles. More significantly, the 3DOM-ZnTe1-x@NC based pouch cells are also fabricated to demonstrate its potential for practical applications. This work highlights that the rational combination of 3DOM architecture and vacancy engineering is important for designing advanced Li-S electrocatalysts. Small ZnTe1-x nanoparticles with anionic vacancies anchored on 3D ordered macroporous N-doped carbon skeleton (3DOM-ZnTe1-x@NC) are elaborately constructed to address the challenges of lithium-sulfur batteries (LSBs). Benefiting from the multifarious advantages, LSBs employing 3DOM-ZnTe1-x@NC modified separators exhibit excellent electrochemical performance. This work demonstrates the importance of rational combination of 3DOM architecture and vacancy engineering for designing advanced Li-S electrocatalysts. image
Keyword ：
anionic vacancies anionic vacancies catalytic activity catalytic activity lithium-sulfur batteries lithium-sulfur batteries ordered macropores ordered macropores separator modifiers separator modifiers
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Xiangpeng , Xie, Wenchang , Zhao, Mincai et al. Zinc Tellurium with Anionic Vacancies Anchored on Ordered Macroporous Carbon Skeleton Enabling Accelerated Polysulfide Conversion for Lithium-Sulfur Batteries [J]. | SMALL , 2024 , 20 (49) . |
| MLA | Wu, Xiangpeng et al. "Zinc Tellurium with Anionic Vacancies Anchored on Ordered Macroporous Carbon Skeleton Enabling Accelerated Polysulfide Conversion for Lithium-Sulfur Batteries" . | SMALL 20 . 49 (2024) . |
| APA | Wu, Xiangpeng , Xie, Wenchang , Zhao, Mincai , Cai, Daoping , Yang, Mingquan , Xie, Rongjun et al. Zinc Tellurium with Anionic Vacancies Anchored on Ordered Macroporous Carbon Skeleton Enabling Accelerated Polysulfide Conversion for Lithium-Sulfur Batteries . | SMALL , 2024 , 20 (49) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Catalytic conversion of polysulfides has been regarded as an effective strategy to suppress the shuttle effect in lithium-sulfur (Li-S) batteries by accelerating the conversion of lithium polysulfides (LiPSs). However, the rational design of high-performance sulfur electrocatalysts still remains a big challenge. In this work, we develop a facile approach to synthesize a grain-boundary-rich cobalt selenide hollow multi-shelled structure (denoted as GB-CoSe HoMS) to serve as a high-efficiency electrocatalyst for Li-S batteries. Such a unique structural design could physically inhibit the diffusion of polysulfide intermediates and effectively accommodate the large volume expansion. Besides, the GB-CoSe HoMS possesses strong chemical adsorption towards LiPSs and superior catalytic activity to accelerate the conversion reaction kinetics, thereby suppressing the shuttle effect of LiPSs and enhancing the sulfur utilization. Owing to the multifarious advantages, the assembled Li-S batteries with GB-CoSe HoMS modified polypropylene separators display a high initial discharge capacity of 1393.3 mA h g-1 at 0.1C, superior rate performance (660.9 mA h g-1 at 3C), and good long-term cycle stability with a low capacity decay rate of 0.046% per cycle after 1000 cycles at 1C. More significantly, even with a high sulfur loading of 5.5 mg cm-2 and lean electrolyte (E/S approximate to 8.0 mu L mg-1), the battery still harvests a high discharge capacity of 977.8 mA h g-1 after 40 cycles at 0.2C, suggesting its great potential for practical applications. The present work demonstrates the importance of engineering the morphology and grain boundary in developing high-performance electrocatalysts for Li-S batteries. A unique grain-boundary-rich cobalt selenide hollow multi-shelled structure (GB-CoSe HoMS) has been rationally designed and synthesized as a high-efficiency electrocatalyst to adsorb and convert the polysulfides for lithium-sulfur batteries.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yin, Yuan , Tan, Pengcheng , Chen, Qidi et al. A grain-boundary-rich cobalt selenide hollow multi-shelled structure as a highly efficient electrocatalyst for lithium-sulfur batteries [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (40) : 27400-27408 . |
| MLA | Yin, Yuan et al. "A grain-boundary-rich cobalt selenide hollow multi-shelled structure as a highly efficient electrocatalyst for lithium-sulfur batteries" . | JOURNAL OF MATERIALS CHEMISTRY A 12 . 40 (2024) : 27400-27408 . |
| APA | Yin, Yuan , Tan, Pengcheng , Chen, Qidi , Cai, Daoping , Zhang, Chaoqi , Zhan, Hongbing . A grain-boundary-rich cobalt selenide hollow multi-shelled structure as a highly efficient electrocatalyst for lithium-sulfur batteries . | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (40) , 27400-27408 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The intrinsically sluggish sulfur reduction reaction kinetics and serious shuttle effect of soluble lithium polysulfides (LiPSs) severely impede the practical commercialization of lithium-sulfur (Li-S) batteries. Herein, self-supported tungsten nitride and carbide heterostructures with vanadium doping that are directly grown on carbon cloth substrate (CC@V-W2N/WC1-x) are creatively designed for Li-S batteries, which can tandemly catalyze the liquid-liquid conversion and liquid-solid conversion of polysulfide intermediate free of any interference from polymer binders and conductive additives. Noteworthy, the rich heterointerfaces and vanadium doping are beneficial for rapid charge transfer, strong chemical adsorption toward LiPSs, massive exposed catalytically active sites, and remarkable catalytic activities. Consequently, Li-S batteries assembled with the CC@V-W2N/WC1-x/S cathodes exhibit high sulfur utilization, superior rate capability, and decent long-term cycling stability. Furthermore, experimental analyses and theoretical calculations jointly substantiate that the V-W2N component is more effective in catalyzing the conversion of long-chain LiPSs, while the V-WC1-x benefits the favorable Li2S deposition kinetics. More importantly, the Li-S pouch cells are also fabricated to demonstrate their feasibility for practical applications. This work not only highlights the significance of tandem catalysis on the consecutive conversion of LiPSs but also provides a feasible avenue for developing highly efficient electrocatalysts toward high-performance Li-S batteries. A self-supported CC@V-W2N/WC1-x sulfur electrocatalyst with rich heterointerfaces and vanadium doping that is directly grown on carbon cloth substrate is creatively constructed for Li-S batteries. Integrated experimental and theoretical results confirm that the CC@V-W2N/WC1-x can tandemly catalyze the complicated sulfur reduction reaction. This work provides new inspiration for the design of tandem electrocatalysts for Li-S battery system. image
Keyword ：
heterostructure engineering heterostructure engineering lithium-sulfur batteries lithium-sulfur batteries self-supported arrays self-supported arrays sulfur hosts sulfur hosts tandem catalysis tandem catalysis
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Yongqing , Zhang, Xudong , Chen, Qidi et al. Self-Supported Tungsten Nitride and Carbide Heterostructures with Vanadium Doping Tandemly Catalyze the Conversion of Polysulfides for Lithium-Sulfur Batteries [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) . |
| MLA | Chen, Yongqing et al. "Self-Supported Tungsten Nitride and Carbide Heterostructures with Vanadium Doping Tandemly Catalyze the Conversion of Polysulfides for Lithium-Sulfur Batteries" . | ADVANCED FUNCTIONAL MATERIALS 35 . 1 (2024) . |
| APA | Chen, Yongqing , Zhang, Xudong , Chen, Qidi , Cai, Daoping , Zhang, Chaoqi , Sa, Baisheng et al. Self-Supported Tungsten Nitride and Carbide Heterostructures with Vanadium Doping Tandemly Catalyze the Conversion of Polysulfides for Lithium-Sulfur Batteries . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Lithium-sulfur (Li-S) batteries are promising candidates for next-generation electrochemical energy storage systems by virtue of the high energy density, low-cost, and ecofriendliness. Unfortunately, the sluggish sulfur conversion kinetics, notorious shuttle effect of lithium polysulfides (LiPSs) and severe volumetric variation during the lithiation/delithiation process result in insufficient sulfur utilization and fast capacity degradation. Herein, tungsten-doped vanadium carbide nanosheet arrays strongly coupled with a thin nitrogen-doped carbon layer directly grown on carbon cloth substrate (denoted as CC/W-VC@NC) have been conceptually designed as an advanced sulfur host to resolve the aforementioned problems. Specifically, the binder-free CC/W-VC@NC sulfur host not only strongly interacts with LiPSs, but also presents superior electrocatalytic activity for rapid LiPSs conversion. Additionally, the arrayed architecture provides sufficient space for sulfur loading and simultaneously accommodates its volumetric variation. Furthermore, theoretical calculations elucidate that tungsten doping can regulate the electronic structure, improve the electrical conductivity and strengthen the chemisorption toward LiPSs. Attributing to the multifarious advantages, Li-S batteries assembled with CC/W-VC@NC/ S cathode exhibit a high initial discharge capacity of 1305.9 mAh/g at 0.1 C, as well as superior rate capability (709.8 mAh/g at 5 C) and good long-term durability (capacity decay rate of only 0.063 % per cycle over 500 cycles at 1 C). This study presents an effective approach to construct transition metal carbides as highperformance sulfur hosts for Li-S batteries.
Keyword ：
Binder-free Binder-free Conversion kinetics Conversion kinetics Doping Doping Lithium-sulfur batteries Lithium-sulfur batteries Sulfur hosts Sulfur hosts
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Xudong , Chen, Yongqing , Cai, Daoping et al. Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 498 . |
| MLA | Zhang, Xudong et al. "Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries" . | CHEMICAL ENGINEERING JOURNAL 498 (2024) . |
| APA | Zhang, Xudong , Chen, Yongqing , Cai, Daoping , Zhang, Chaoqi , Chen, Qidi , Zhan, Hongbing . Dual-engineering of tungsten doping and carbon incorporation in vanadium carbide arrays to accelerate the polysulfide conversion for lithium-sulfur batteries . | CHEMICAL ENGINEERING JOURNAL , 2024 , 498 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对传统材料科学与工程专业综合实验教学现状及存在的问题，提出课题结合式的综合实验教学改革.课题结合式的综合实验使学生由被动转为主体，自主进行实验方案设计、样品制备、材料表征及性能分析，结果分析与讨论，从而培养学生理论联系实践、提出问题、分析问题和解决问题的能力，培养学生的团队协作能力和专业交流能力，为学生毕业后走上工作岗位打下良好的基础.
Keyword ：
材料科学与工程 材料科学与工程 综合实验 综合实验 课题结合式 课题结合式
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 陈奇俤 , 陈青青 , 蔡道平 . 材料科学与工程专业课题结合式的综合实验教学探索 [J]. | 兰州文理学院学报(自然科学版) , 2024 , 38 (03) : 124-128 . |
| MLA | 陈奇俤 et al. "材料科学与工程专业课题结合式的综合实验教学探索" . | 兰州文理学院学报(自然科学版) 38 . 03 (2024) : 124-128 . |
| APA | 陈奇俤 , 陈青青 , 蔡道平 . 材料科学与工程专业课题结合式的综合实验教学探索 . | 兰州文理学院学报(自然科学版) , 2024 , 38 (03) , 124-128 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
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
Cite：
Copy from the list or Export to your reference management。
| 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) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The practical applications of lithium-sulfur (Li-S) batteries are severely impeded by the shuttle effect of soluble lithium polysulfides (LiPSs), sluggish redox reaction kinetics, and insulating nature of sulfur and its discharge products (Li2S2/Li2S). Developing sulfur electrocatalysts with high electrocatalytic activity to accelerate the redox kinetics and polysulfide trapping is critical for Li-S batteries but remains a grand challenge. In this contribution, we demonstrate the delicate design and synthesis of oxygen-incorporated heterophase cobalt vanadium selenide nanoplates with dense crystalline/amorphous interfacial sites (denoted as DC/A O-CoVSe NPs) as high-efficiency sulfur electrocatalysts for Li-S batteries. Such DC/A O-CoVSe NPs possess high electronic conductivity and electrocatalytic activity. Besides, the abundant exposed crystalline/amorphous interfacial sites serve as efficient adsorption-catalytic centers to accelerate the conversion kinetics and alleviate the shuttle effect. Moreover, incorporation of oxygen further increases their affinity to LiPSs because of the introduction of more Li-O interactions. Benefiting from the multifarious advantages, Li-S batteries with DC/A O-CoVSe NP modified separators exhibit high discharge capacity (1400.1 mA h g-1 at 0.1C), excellent rate capability (683.8 mA h g-1 at 5C), and good long-term durability (672.4 mA h g-1 at 1C after 500 cycles with a low decay rate of 0.066% per cycle). Even at a high sulfur loading of 5.6 mg cm-2, the battery still delivers a decent reversible capacity of 658.8 mA h g-1 at 0.2C after 100 cycles, indicating its great potential for practical applications. This work could provide a rational viewpoint for developing high-efficiency sulfur electrocatalysts towards future advanced Li-S energy storage systems. Oxygen-incorporated heterophase cobalt vanadium selenide nanoplates with dense crystalline/amorphous interfacial sites (DC/A O-CoVSe NPs) are developed as high-efficiency sulfur electrocatalysts for lithium-sulfur batteries.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Tan, Pengcheng , Yin, Yuan , Cai, Daoping et al. Oxygen-incorporated crystalline/amorphous heterophase cobalt vanadium selenide nanoplates with dense interfacial sites for robust lithium-sulfur batteries [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (6) : 3711-3721 . |
| MLA | Tan, Pengcheng et al. "Oxygen-incorporated crystalline/amorphous heterophase cobalt vanadium selenide nanoplates with dense interfacial sites for robust lithium-sulfur batteries" . | JOURNAL OF MATERIALS CHEMISTRY A 12 . 6 (2024) : 3711-3721 . |
| APA | Tan, Pengcheng , Yin, Yuan , Cai, Daoping , Fei, Ban , Zhang, Chaoqi , Chen, Qidi et al. Oxygen-incorporated crystalline/amorphous heterophase cobalt vanadium selenide nanoplates with dense interfacial sites for robust lithium-sulfur batteries . | JOURNAL OF MATERIALS CHEMISTRY A , 2024 , 12 (6) , 3711-3721 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Poly (triazine imide) photocatalysts prepared via molten salt methods emerge as promising polymer semiconductors with one-step excitation capacity of overall water splitting. Unveiling the molecular conjugation, nucleation, and crystallization processes of PTI crystals is crucial for their controllable structure design. Herein, microscopy characterization was conducted at the PTI crystallization front from meso to nano scales. The heptazine-based precursor was found to depolymerize to triazine monomers within molten salts and KCl cubes precipitate as the leading cores that guide the directional stacking of PTI molecular units to form aggregated crystals. Upon this discovery, PTI crystals with improved dispersibility and enhanced photocatalytic performance were obtained by tailoring the crystallization fronts. This study advances insights into the directional assembling of PTI monomers on salt templates, placing a theoretical foundation for the ordered condensation of polymer crystals.
Keyword ：
Directional Conjugation Directional Conjugation Molten Salts Molten Salts Overall Water Splitting Overall Water Splitting Photocatalyst Photocatalyst Polymeric Carbon Nitride Polymeric Carbon Nitride
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liang, Xiaocong , Xue, Sikang , Yang, Can et al. The Directional Crystallization Process of Poly (triazine imide) Single Crystals in Molten Salts [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2023 , 62 (14) . |
| MLA | Liang, Xiaocong et al. "The Directional Crystallization Process of Poly (triazine imide) Single Crystals in Molten Salts" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 62 . 14 (2023) . |
| APA | Liang, Xiaocong , Xue, Sikang , Yang, Can , Ye, Xiaoyuan , Wang, Yulan , Chen, Qidi et al. The Directional Crystallization Process of Poly (triazine imide) Single Crystals in Molten Salts . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2023 , 62 (14) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Electrocatalytic conversion of soluble lithium polysulfides (LiPSs) has been proposed as a crucial approach to address the drawbacks of lithium-sulfur (Li-S) batteries. However, it still remains a great challenge to realize the integration of strong adsorption and high catalytic activity within a single electrocatalyst. Herein, we conceptually demonstrate the rational design and synthesis of a crystalline Bi2Se3 and amorphous BiOx heterostructure (denoted as c-Bi2Se3/a-BiOx) as an advanced separator modifier for Li-S batteries. In such a heterostructure, a-BiOx has strong chemical adsorption ability toward LiPSs and c-Bi2Se3 possesses high catalytic activity for LiPS conversion. Meanwhile, the heterointerface enables rapid diffusion of LiPSs from a-BiOx to c-Bi2Se3, thus synergistically contributing to the highly efficient adsorption-diffusion-conversion process of LiPSs. Benefiting from these advantages, Li-S batteries using a c-Bi2Se3/a-BiOx heterostructure modified separator exhibit excellent electrochemical performance in terms of high discharge capacity (1517.9 mA h g(-1) at 0.1C), outstanding rate capacity (873.1 mA h g(-1) at 4C) and long-term cycling stability with a low capacity decay rate of 0.041% per cycle over 1000 cycles at 1C. Furthermore, a remarkable areal capacity of 3.85 mA h cm(-2) can be achieved at a high sulfur loading of 5.5 mg cm(-2). This work provides valuable insight into the development of crystalline/amorphous heterostructures as robust and highly active electrocatalysts for high-performance Li-S batteries.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Xiangpeng , Shen, Zewei , Cai, Daoping et al. Amorphous/crystalline heterostructure design enables highly efficient adsorption-diffusion-conversion of polysulfides for lithium-sulfur batteries [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (34) : 18313-18322 . |
| MLA | Wu, Xiangpeng et al. "Amorphous/crystalline heterostructure design enables highly efficient adsorption-diffusion-conversion of polysulfides for lithium-sulfur batteries" . | JOURNAL OF MATERIALS CHEMISTRY A 11 . 34 (2023) : 18313-18322 . |
| APA | Wu, Xiangpeng , Shen, Zewei , Cai, Daoping , Fei, Ban , Zhao, Mincai , Fu, Junjie et al. Amorphous/crystalline heterostructure design enables highly efficient adsorption-diffusion-conversion of polysulfides for lithium-sulfur batteries . | JOURNAL OF MATERIALS CHEMISTRY A , 2023 , 11 (34) , 18313-18322 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
