Low-temperature Li-S battery enabled by CoFe bimetallic catalysts
文献类型:期刊论文
作者 | Gao, Ning1; Zhang, Yujiao1; Chen, Chong2; Li, Bao3; Li, Wenbiao1; Lu, Huiqiang4; Yu, Le2; Zheng, Shumin1; Wang, Bao1 |
刊名 | JOURNAL OF MATERIALS CHEMISTRY A
![]() |
出版日期 | 2022-03-04 |
页码 | 12 |
ISSN号 | 2050-7488 |
DOI | 10.1039/d2ta00406b |
英文摘要 | Lithium-sulfur (Li-S) batteries are considered promising energy storage devices. To ensure practical applications in a natural environment, Li-S batteries must be capable of performing normally at low temperature. However, the intrinsic characteristics of S, such as large volume variation, low conductivity, and shuttle effect, hinder its low-temperature applications. Moreover, Li+ transport is poor at low temperatures, resulting in fast capacity deterioration, low-capacity output, and large overpotential. In this study, a free-standing host embedded with CoFe bimetallic nanoparticles has been designed. CoFe functions as an efficient catalyst for the polysulfide conversion. The in situ growth of graphite shells around CoFe bimetallic nanoparticles function as a nanoreactor to confine and absorb polysulfides, and the host is an ideal porous conductivity network for rapid ion transportation, preventing the accumulation of Li2S and alleviating the volume changes during the lithiation/delithiation process. Density functional theory (DFT) calculations prove that the successive lithiation process from S-8 to Li2S on CoFe is thermodynamically spontaneous, and CoFe has a kinetic catalytic activity for this series of lithiation reactions. Experimentally, rationally designed CoFe@C@CNF cathodes are introduced into Li-S batteries for low-temperature applications. The cathode delivers superior rate capacity (828 mA h g(-1) at 10C) and a low fading rate (0.053% per cycle over 300 cycles). An enhanced capacity (836 mA h g(-1) at 0.2C) and cycling stability (capacity retention rate of 94.5% after 100 cycles) were achieved at -20 degrees C. This study provides a feasible method for developing high-rate and long-life Li-S batteries for low-temperature applications. |
WOS关键词 | LITHIUM-ION BATTERY ; SULFUR CATHODE ; PERFORMANCE ; STRATEGY ; CARBON ; OXYGEN ; INTERLAYER ; SEPARATOR ; EVOLUTION ; DIFFUSION |
资助项目 | National Natural Science Foundation of China[52172250] ; National Natural Science Foundation of China[51772296] ; National Natural Science Foundation of China[51902016] |
WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000768952200001 |
出版者 | ROYAL SOC CHEMISTRY |
资助机构 | National Natural Science Foundation of China |
源URL | [http://ir.ipe.ac.cn/handle/122111/52217] ![]() |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Yu, Le; 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.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 3.Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China 4.Gannan Normal Univ, Sch Geog & Environm Engn, Ganzhou Key Lab Drug Screening & Discovery, Ganzhou 341000, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Ning,Zhang, Yujiao,Chen, Chong,et al. Low-temperature Li-S battery enabled by CoFe bimetallic catalysts[J]. JOURNAL OF MATERIALS CHEMISTRY A,2022:12. |
APA | Gao, Ning.,Zhang, Yujiao.,Chen, Chong.,Li, Bao.,Li, Wenbiao.,...&Wang, Bao.(2022).Low-temperature Li-S battery enabled by CoFe bimetallic catalysts.JOURNAL OF MATERIALS CHEMISTRY A,12. |
MLA | Gao, Ning,et al."Low-temperature Li-S battery enabled by CoFe bimetallic catalysts".JOURNAL OF MATERIALS CHEMISTRY A (2022):12. |
入库方式: OAI收割
来源:过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。