Medium-Entropy-Alloy FeCoNi Enables Lithium-Sulfur Batteries with Superb Low-Temperature Performance
文献类型：期刊论文
| 作者 | Pang, Xiaowan1,2; Geng, Haitao1; Dong, Shaowen1,3; An, Baigang2; Zheng, Shumin1; Wang, Bao1 |
| 刊名 | SMALL
 |
| 出版日期 | 2022-11-26 |
| 页码 | 11 |
| ISSN号 | 1613-6810 |
| 关键词 | FeCoNi nanoparticles Li-S batteries low temperatures medium-entropy-alloy |
| DOI | 10.1002/smll.202205525 |
| 英文摘要 | Lithium-sulfur battery suffers from sluggish kinetics at low temperatures, resulting in serious polarization and reduced capacity. Here, this work introduces medium-entropy-alloy FeCoNi as catalysts and carbon nanofibers (CNFs) as hosts. FeCoNi nanoparticles are in suit synthesized in cotton-derived CNFs. FeCoNi with atomic-level mixing of each element can effectively modulate lithium polysulfides (LiPSs), multiple components making them promising to catalyze more LiPSs species. The higher configurational entropy endows FeCoNi@CNFs with extraordinary electrochemical activity, corrosion resistance, and mechanical properties. The fractal structure of CNFs provides a large specific surface area, leaving room for volume expansion and Li2S accumulation, facilitating electrolyte wetting. The unique 3D conductive network structure can suppress the shuttle effect by physicochemical adsorption of LiPSs. This work systematically evaluates the performance of the obtained Li2S6/FeCoNi@CNFs electrode. The initial discharge capacity of Li2S6/FeCoNi@CNFs reaches 1670.8 mAh g(-1) at 0.1 C under -20 degrees C. After 100 cycles at 0.2 C, the capacity decreases from 1462.3 to 1250.1 mAh g(-1). Notably, even under -40 degrees C at 0.1 C, the initial discharge capacity of Li2S6/FeCoNi@CNFs still reaches 1202.8 mAh g(-1). After 100 cycles at 0.2 C, the capacity retention rate is 50%. This work has important implications for the development of low-temperature Li-S batteries. |
| WOS关键词 | ION BATTERY ; LONG-LIFE ; ELECTROLYTE ; CONVERSION ; DIFFUSION ; STRATEGY |
| 资助项目 | National Natural Science Foundation of China ; [52172250] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| WOS记录号 | WOS:000889711100001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55842]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | An, Baigang; Zheng, Shumin; Wang, Bao |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Univ Sci & Technol Liaoning, Sch Chem Engn, 185 Qianshanzhong Rd, Anshan 114051, Peoples R China 3.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pang, Xiaowan,Geng, Haitao,Dong, Shaowen,et al. Medium-Entropy-Alloy FeCoNi Enables Lithium-Sulfur Batteries with Superb Low-Temperature Performance[J]. SMALL,2022:11. |
| APA | Pang, Xiaowan,Geng, Haitao,Dong, Shaowen,An, Baigang,Zheng, Shumin,&Wang, Bao.(2022).Medium-Entropy-Alloy FeCoNi Enables Lithium-Sulfur Batteries with Superb Low-Temperature Performance.SMALL,11. |
| MLA | Pang, Xiaowan,et al."Medium-Entropy-Alloy FeCoNi Enables Lithium-Sulfur Batteries with Superb Low-Temperature Performance".SMALL (2022):11. |
入库方式： OAI收割
来源：过程工程研究所
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