Robust Electrocatalytic Li2S Redox of Li-S Batteries Facilitated by Rationally Fabricated Dual-Defects
文献类型：期刊论文
| 作者 | Cui, Yingyue1,2,3; Li, Jin1,2,3; Cai, Yingjun1,3,4; Zhang, Haitao1,2,3,4; Zhang, Suojiang1,3 |
| 刊名 | SMALL
 |
| 出版日期 | 2022-09-23 |
| 页码 | 12 |
| 关键词 | cathode materials electrocatalysis intrinsic defects kinetics lithium-sulfur batteries |
| ISSN号 | 1613-6810 |
| DOI | 10.1002/smll.202204183 |
| 英文摘要 | The commercialization of lithium-sulfur batteries with ultra-high theoretical energy density is restricted mainly by the notorious polysulfides "shuttle effect" and slow Li2S redox reaction kinetics. A sulfur host material with high catalytic activity and high conductivity is greatly desired to improve its electrochemical performance. Herein, a sulfur host material, etched cotton@petroleum asphalt carbon (eCPAC), with high specific surface area and excellent catalytic activity, is demonstrated based on a synergistic strategy of introducing intrinsic lattice defects and composite carbon structure. Benefiting from in situ coupling of amorphous and crystalline materials, eCPAC exhibits high conductivity and high sulfur adsorbability. Furthermore, eCPAC containing dual intrinsic defect sites can catalyze the bidirectional sulfur chemistry of Li2S and capture polysulfides, which is also demonstrated by systematic density functional theory calculations and the potential intermittent titration technique. S@eCPAC/Li cells exhibit excellent cycling stability and rate performance, with an average capacity decay rate of only 0.05% over 1000 cycles at 0.5 C and even 0.03% over 600 cycles at 5 C. Meanwhile, the practicality of eCPAC is proven in high-load batteries and pouch batteries. eCPAC provides a reliable strategy for achieving a win-win situation of capturing polysulfides and accelerating Li2S redox kinetics. |
| WOS关键词 | METAL-FREE ELECTROCATALYST ; TOPOLOGICAL DEFECTS ; OXYGEN REDUCTION ; SULFUR ; GRAPHENE ; PERFORMANCE ; ELECTRODES |
| 资助项目 | National Key Research and Development Program of China[2019YFA0705602] ; Science and Technology Service Network Initiative program of CAS[KFJ-STS-QYZD-2021-02-002] ; Major Program of National Natural Science Foundation of China[21890762] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000856984800001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | National Key Research and Development Program of China ; Science and Technology Service Network Initiative program of CAS ; Major Program of National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/54656]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Cai, Yingjun; Zhang, Haitao; Zhang, Suojiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 4.Zhengzhou Inst Emerging Ind Technol, Henan Key Lab Energy Storage Mat & Proc, Zhengzhou 450003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Yingyue,Li, Jin,Cai, Yingjun,et al. Robust Electrocatalytic Li2S Redox of Li-S Batteries Facilitated by Rationally Fabricated Dual-Defects[J]. SMALL,2022:12. |
| APA | Cui, Yingyue,Li, Jin,Cai, Yingjun,Zhang, Haitao,&Zhang, Suojiang.(2022).Robust Electrocatalytic Li2S Redox of Li-S Batteries Facilitated by Rationally Fabricated Dual-Defects.SMALL,12. |
| MLA | Cui, Yingyue,et al."Robust Electrocatalytic Li2S Redox of Li-S Batteries Facilitated by Rationally Fabricated Dual-Defects".SMALL (2022):12. |
入库方式： OAI收割
来源：过程工程研究所
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