Enhanced kinetics of polysulfide redox reactions on mo2c/cnt in lithium–sulfur batteries
文献类型：期刊论文
| 作者 | Razaq,Rameez1; Sun,Dan1; Xin,Ying1; Li,Qian1; Huang,Taizhong1; Zheng,Lei2; Zhang,Zhaoliang1; Huang,Yunhui3 |
| 刊名 | Nanotechnology
 |
| 出版日期 | 2018-05-16 |
| 卷号 | 29期号:29 |
| 关键词 | Lithium–sulfur batteries Polysulfide shuttle Electrochemical kinetics Molybdenum carbides Carbon nanotubes |
| ISSN号 | 0957-4484 |
| DOI | 10.1088/1361-6528/aac060 |
| 英文摘要 | Abstract among different energy storage devices, the lithium–sulfur (li–s) battery is the subject of recent attention. however, the capacity decay caused by polysulfide shuttle leading to sluggish kinetics of polysulfide redox reactions is the main hindrance for its practical application in li–s batteries. herein, molybdenum carbide nanoparticles anchored on carbon nanotubes (mo2c/cnt) are reported to serve as an efficient cathode material to enhance the electrochemical kinetics of polysulfide conversion in li–s batteries. mo2c/cnt shows strong adsorption and activation of polar polysulfides and therefore accelerates the redox kinetics of polysulfides, reduces the energy barrier, effectively mitigates the polarization and polysulfide shuttle, thus improving the electrochemical performance. the s-mo2c/cnt composite with 70 wt% sulfur loading exhibits high specific discharge capacity (1206 ma h g?1 at 0.5 c), excellent high-rate performance, long cycle life (900 cycles), and outstanding coulombic efficiency (～100%) at a high rate (2 c) corresponding to a capacity decay of only 0.05%. remarkably, the s-mo2c/cnt cathode with high areal sulfur loading of 2.5 mg cm?2 exhibits high-rate capacities and stable cycling performance over 100 cycles, offering the potential for use in high energy li–s batteries. |
| 语种 | 英语 |
| WOS记录号 | IOP:0957-4484-29-29-AAC060 |
| 出版者 | IOP Publishing |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175737 |
| 专题 | 高能物理研究所 |
| 作者单位 | 1.School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan 250022, People’s Republic of China 2.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China 3.School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Razaq,Rameez,Sun,Dan,Xin,Ying,et al. Enhanced kinetics of polysulfide redox reactions on mo2c/cnt in lithium–sulfur batteries[J]. Nanotechnology,2018,29(29). |
| APA | Razaq,Rameez.,Sun,Dan.,Xin,Ying.,Li,Qian.,Huang,Taizhong.,...&Huang,Yunhui.(2018).Enhanced kinetics of polysulfide redox reactions on mo2c/cnt in lithium–sulfur batteries.Nanotechnology,29(29). |
| MLA | Razaq,Rameez,et al."Enhanced kinetics of polysulfide redox reactions on mo2c/cnt in lithium–sulfur batteries".Nanotechnology 29.29(2018). |
入库方式： iSwitch采集
来源：高能物理研究所
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。