Polysulfide Stabilization: A Pivotal Strategy to Achieve High Energy Density Li-S Batteries with Long Cycle Life
文献类型：期刊论文
| 作者 | Chen, Yuqing2,3; Zhang, Hongzhang1,2; Xu, Wenbin2; Yang, Xiaofei1,2,3; Yu, Ying2,3; Li, Xianfeng2; Zhang, Huamin1,2 |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2018-02-21 |
| 卷号 | 28期号:8 |
| 关键词 | Complexing Agent High Energy Density Hsab Theory Li-s Battery Polysulfide Stabilization |
| ISSN号 | 1616-301X |
| DOI | 10.1002/adfm.201704987 |
| 文献子类 | Article |
| 英文摘要 | The disproportionation of polysulfide (PS) is a long-neglected and vital issue that causes the fast capacity fading of Li-S batteries. Based on the hard and soft acids and bases (HSAB) theory, a large size N-methyl-N-ethyl pyrrolidinium (MEP+) cation is proposed to complex and stabilize the PS in electrolyte. The disproportionation of PS is successfully suppressed by this simple method, thereby avoiding the precipitation of sulfur in the electrolyte and reducing the loss of the active materials. The mutual interaction mechanism between MEP+ and S-n(2-) in electrolyte is comprehensively investigated and verified for the first time, via both density functional theory (DFT) calculation and experimental characterization. It enables the 5000 mA h Li-S batteries (soft package type) to achieve initial specific energy over 300 Wh kg(-1) and maintain over 65% after 100 charge/discharge cycles at 1/20 C, while merely 24% is remained at 59 cycles without MEP+. This interesting finding is believed to shed light on the further development of Li-S batteries. |
| WOS关键词 | LITHIUM-SULFUR BATTERIES ; SOLID-ELECTROLYTE INTERPHASE ; LIQUID ELECTROLYTE ; IONIC LIQUID ; STORAGE DEVICES ; DISULFIDE BOND ; SOFT ACIDS ; PERFORMANCE ; DISCHARGE ; SEPARATOR |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000425448200007 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168858]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Zhang, Hongzhang; Zhang, Huamin |
| 作者单位 | 1.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yuqing,Zhang, Hongzhang,Xu, Wenbin,et al. Polysulfide Stabilization: A Pivotal Strategy to Achieve High Energy Density Li-S Batteries with Long Cycle Life[J]. ADVANCED FUNCTIONAL MATERIALS,2018,28(8). |
| APA | Chen, Yuqing.,Zhang, Hongzhang.,Xu, Wenbin.,Yang, Xiaofei.,Yu, Ying.,...&Zhang, Huamin.(2018).Polysulfide Stabilization: A Pivotal Strategy to Achieve High Energy Density Li-S Batteries with Long Cycle Life.ADVANCED FUNCTIONAL MATERIALS,28(8). |
| MLA | Chen, Yuqing,et al."Polysulfide Stabilization: A Pivotal Strategy to Achieve High Energy Density Li-S Batteries with Long Cycle Life".ADVANCED FUNCTIONAL MATERIALS 28.8(2018). |
入库方式： OAI收割
来源：大连化学物理研究所
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