| 多壁碳纳米管-氮化钒空心球复合材料作为高效硫载体用于锂硫电池 |
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| 引用本文： | 陈平,刘逸然,潘沛锋,方亚男,单淇,冯晓苗,刘瑞卿,林秀婧,马延文.多壁碳纳米管-氮化钒空心球复合材料作为高效硫载体用于锂硫电池[J].无机化学学报,2021,37(7):1184-1190. |
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| 作者姓名： | 陈平 刘逸然 潘沛锋 方亚男 单淇 冯晓苗 刘瑞卿 林秀婧 马延文 |
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| 作者单位： | 南京邮电大学材料科学与工程学院, 信息材料与纳米技术研究院(IAM), 江苏省有机电子与信息显示协同创新中心(SICAM), 南京 210023 |
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| 基金项目： | 国家自然科学基金（No.51772157，21805140，61504062）、江苏省自然科学基金（No.BK20150863，BK20160890）和江苏省六大人才高峰（No.2015-JY-015）资助。 |
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| 摘 要： | 以多壁碳纳米管/氮化钒复合材料(MWCNT-VN)作为锂硫电池正极载体材料,利用VN的空心结构储存硫和限制多硫化物的穿梭效应。另外,MWCNT形成了一个导电网络,进一步提升了正极的导电性能。在1C的电流密度下,VN/S电极与MWCNT-VN/S电极的初始放电比容量分别为702.2和809.3 mAh·g~(-1),经过350圈循环后,每圈衰减量均小于0.1%。与单纯VN/S相比,所得MWCNT-VN复合材料的电化学性能均有提升,如较高的锂离子迁移率、稳定的倍率性能和长循环稳定性。
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| 关 键 词： | 锂硫电池 氮化钒 碳纳米管 正极 |
| 收稿时间： | 2020/12/17 0:00:00 |
| 修稿时间： | 2021/5/25 0:00:00 |
Assembly and Application for Li-S Batteries of Multi-walled Carbon Nanotube-Vanadium Nitride Hollow Sphere Composite |
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| CHEN Ping,LIU Yi-Ran,PAN Pei-Feng,FANG Ya-Nan,SHAN Qi,FENG Xiao-Miao,LIU Rui-Qing,LIN Xiu-Jing,MA Yan-Wen.Assembly and Application for Li-S Batteries of Multi-walled Carbon Nanotube-Vanadium Nitride Hollow Sphere Composite[J].Chinese Journal of Inorganic Chemistry,2021,37(7):1184-1190. |
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| Authors: | CHEN Ping LIU Yi-Ran PAN Pei-Feng FANG Ya-Nan SHAN Qi FENG Xiao-Miao LIU Rui-Qing LIN Xiu-Jing MA Yan-Wen |
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| Affiliation: | School of Materials Science & Engineering, Institute of Advanced Materials(IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials(SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China |
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| Abstract: | Multi-walled carbon nanotube/vanadium nitride composite (MWCNT-VN) was used as the positive electrode carrier material of lithium-sulfur battery, and sulfur was stored through the hollow structure of vanadium nitride, and it can also effectively limit the shuttle effect of polysulfide. In addition, carbon nanotubes can form a conductive network, which further improves the conductive performance. The initial capacities were 702.2 and 809.3 mAh·g-1 for VN/S and MWCNT-VN/S cathode at a current density of 1C, respectively. After 350 charge-discharge cycles, the capacity attenuation was about 0.1% per cycle. Compared with pure VN/S, the electrochemical performance of the obtained MWCNT-VN/S was improved, such as high lithium ion mobility, stable rate performance and excellent long-cycle stability. |
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| Keywords: | lithium-sulfur batteries vanadium nitride carbon nanotube cathode |
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