Mechanism investigation of iron selenide as polysulfide mediator for long-life lithium-sulfur batteries
文献类型：期刊论文
| 作者 | Sun, Weiwei; Li, Yujie; Liu, Shuangke; Liu, Chang; Tan, Xiaojian; Xie, Kai |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021 |
| 卷号 | 416 |
| 关键词 | CONVERSION REACTIONS PYRITE FES2 NANOSPHERES NANOTUBES GRAPHENE |
| 英文摘要 | The notorious issues of polysulfide shuttling behaviour and sluggish redox kinetics seriously hamper the practical applications of lithium-sulfur (Li-S) batteries. In this work, catalytic FeSe2 nanoparticles encapsulated with carbon nanoboxes (FeSe2@C NBs) that derived from the selenide reaction of yolk-shelled Fe3O4@C are proposed as a multifunctional sulfur host to restrain the polysulfide shuttle effect and accelerate the polysulfide redox conversion. The experimental results display that the S/FeSe2@C cathode exhibits better sulfur utilization, higher rate performance, and longer cycle life compared to S/Fe3O4@C cathode. Even after 700 cycles at 1C, an ultralow capacity decay of 0.04% per cycle of S/FeSe2@C cathode can still be maintained. The density functional theory (DFT) calculations reveal that FeSe2@C NBs possess stronger chemical affinity to polysulfides and lower energy gap between bonding and antibonding orbitals, which could promote the interfacial charge transfer kinetics, thus enabling better Li-S battery performance. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21747]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Tan, XJ (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. 2.Sun, WW (corresponding author), Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, Weiwei,Li, Yujie,Liu, Shuangke,et al. Mechanism investigation of iron selenide as polysulfide mediator for long-life lithium-sulfur batteries[J]. CHEMICAL ENGINEERING JOURNAL,2021,416. |
| APA | Sun, Weiwei,Li, Yujie,Liu, Shuangke,Liu, Chang,Tan, Xiaojian,&Xie, Kai.(2021).Mechanism investigation of iron selenide as polysulfide mediator for long-life lithium-sulfur batteries.CHEMICAL ENGINEERING JOURNAL,416. |
| MLA | Sun, Weiwei,et al."Mechanism investigation of iron selenide as polysulfide mediator for long-life lithium-sulfur batteries".CHEMICAL ENGINEERING JOURNAL 416(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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