| Residential College | false |
| Status | 已發表Published |
| Fundamentally Manipulating the Electronic Structure of Polar Bifunctional Catalysts for Lithium‐Sulfur Batteries: Heterojunction Design versus Doping Engineering | |
Huifang Xu1; Qingbin Jiang1; Zheng Shu1; Kwan San Hui2 ; Shuo Wang1; Yunshan Zheng1; Xiaolu Liu1; Huixian Xie1; Weng‐Fai Ip3; Chenyang Zha1; Yongqing Cai1; HUI KWUN NAM1
| |
| 2024-05 | |
| Source Publication | Advanced Science
 |
| Volume | 11Issue:20Pages:2307995 |
| Abstract | Heterogeneous structures and doping strategies have been intensively used to manipulate the catalytic conversion of polysulfides to enhance reaction kinetics and suppress the shuttle effect in lithium-sulfur (Li-S) batteries. However, understanding how to select suitable strategies for engineering the electronic structure of polar catalysts is lacking. Here, a comparative investigation between heterogeneous structures and doping strategies is conducted to assess their impact on the modulation of the electronic structures and their effectiveness in catalyzing the conversion of polysulfides. These findings reveal that Co0.125 Zn0.875 Se, with metal-cation dopants, exhibits superior performance compared to CoSe 2 /ZnSe heterogeneous structures. The incorporation of low Co2+ dopants induces the subtle lattice strain in Co0.125 Zn0.875 Se, resulting in the increased exposure of active sites. As a result, Co 0.125 Zn0.875 Se demonstrates enhanced electron accumulation on surface Se sites, improved charge carrier mobility, and optimized both p-band and d-band centers. The Li-S cells employing Co0.125 Zn0.875 Se catalyst demonstrate significantly improved capacity (1261.3 mAh g−1 at 0.5 C) and cycle stability (0.048% capacity delay rate within 1000 cycles at 2 C). This study provides valuable guidance for the modulation of the electronic structure of typical polar catalysts, serving as a design directive to tailor the catalytic activity of advanced Li-S catalysts. |
| Document Type | Journal article |
| Collection | INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING |
| Corresponding Author | Kwan San Hui; Yongqing Cai; HUI KWUN NAM |
| Affiliation | 1.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR, 999078, China 2.School of Engineering, Faculty of Science, University of East Anglia, Norwich, UK 3.Department of Physics and Chemistry Faculty of Science and Technology University of Macau Macau 999078, Chin |
| First Author Affilication | INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING |
| Corresponding Author Affilication | INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING |
| Recommended Citation GB/T 7714 | Huifang Xu,Qingbin Jiang,Zheng Shu,et al. Fundamentally Manipulating the Electronic Structure of Polar Bifunctional Catalysts for Lithium‐Sulfur Batteries: Heterojunction Design versus Doping Engineering[J]. Advanced Science, 2024, 11(20), 2307995. |
| APA | Huifang Xu., Qingbin Jiang., Zheng Shu., Kwan San Hui., Shuo Wang., Yunshan Zheng., Xiaolu Liu., Huixian Xie., Weng‐Fai Ip., Chenyang Zha., Yongqing Cai., & HUI KWUN NAM (2024). Fundamentally Manipulating the Electronic Structure of Polar Bifunctional Catalysts for Lithium‐Sulfur Batteries: Heterojunction Design versus Doping Engineering. Advanced Science, 11(20), 2307995. |
| MLA | Huifang Xu,et al."Fundamentally Manipulating the Electronic Structure of Polar Bifunctional Catalysts for Lithium‐Sulfur Batteries: Heterojunction Design versus Doping Engineering".Advanced Science 11.20(2024):2307995. |
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