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[1]张小溪,马帅,梁凯,等.锂硫电池正极复合材料多壁碳纳米管@介孔碳/硫的制备与性能[J].南京工业大学学报(自然科学版),2018,40(02):41-46.[doi:10.3969/j.issn.1671-7627.2018.02.007]
 ZHANG Xiaoxi,MA Shuai,LIANG Kai,et al.Synthesis and characterization of MWCNT@Meso-C/S composite as a cathode for Li/S batteries[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(02):41-46.[doi:10.3969/j.issn.1671-7627.2018.02.007]
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锂硫电池正极复合材料多壁碳纳米管@介孔碳/硫的制备与性能
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年02期
页码:
41-46
栏目:
出版日期:
2018-03-20

文章信息/Info

Title:
Synthesis and characterization of MWCNT@Meso-C/S composite as a cathode for Li/S batteries
文章编号:
1671-7627(2018)02-0041-06
作者:
张小溪马帅梁凯王国静刘晓敏杨晖
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
ZHANG XiaoxiMA ShuaiLIANG KaiWANG GuojingLIU XiaominYANG Hui
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
锂硫电池 正极材料 ZIF-8 高温碳化 MWCNT@Meso-C/S复合材料
Keywords:
lithium/sulfur battery cathode ZIF-8 high temperature carbonization MWCNT@Meso-C/S composite
分类号:
TM910.4
DOI:
10.3969/j.issn.1671-7627.2018.02.007
文献标志码:
A
摘要:
采用溶剂热法制备多壁碳纳米管(MWCNT)包覆沸石咪唑酯骨架(ZIF-8)而合成的MWCNT@ZIF-8复合材料,通过高温碳化此样品制备MWCNT包覆介孔碳(MWCNT@Meso-C)复合材料,再通过热熔融载硫(S),制得MWCNT@Meso-C/S复合材料。采用X线衍射分析(XRD)、拉曼光谱分析、比表面及孔容分析、热质量分析(TGA)、场发射扫描电子显微镜(FESEM)、能谱仪(EDS)以及电化学测试等手段对不同样品进行表征分析并测试其电化学性能。结果表明:在0.5C倍率下MWCNT@Meso-C/S半电池首次放电比容量为1 114 mA·h/g,100次循环后还有630 mA·h/g,库仑效率保持在99%以上。表明MWCNT@Meso-C/S复合材料有较高的活性物质利用率和良好的循环稳定性。
Abstract:
Multi-walled carbon nanotubes @mesoporous carbon(MWCNT@Meso-C)matrix was prepared via carbonizing MWCNT@zeoliticimidazolate framework(MWCNT@ZIF-8)from solothermal method.Active sulfur was encapsulated into this matrix and the resulting composite was tested.The analysis,characterization,and electrochemical properties of these composites were investigated by X-ray diffraction(XRD),Raman spectroscopic analysis,surface area and pore volume analysis,thermogravimetric analysis(TGA),field emission scanning electron microscope(FESEM),energy dispersive spectroscopy(EDS)and electrochemical test.The MWCNT@Meso-C/S composite cathode displayed a high initial discharge capacity of 1 114 mA·h/g and a good cycling stability of 630 mA·h/g after 100 cycles 0.5C,and the coulombic efficiency reminded above 99%.The high utilization of active S and good cycling stability suggested that the obtained MWCNT@Meso-C/S composite might be a potential cathode for the high performance Li/S battery.

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备注/Memo

备注/Memo:
收稿日期:2016-09-09
基金项目:国家自然科学基金(21573109)
作者简介:张小溪(1991—),男,江西九江人,硕士,主要研究方向为锂硫电池正极材料; 杨晖(联系人),教授,E-mail:yanghui@njtech.edu.cn.
引用本文:张小溪,马帅,梁凯,等.锂硫电池正极复合材料多壁碳纳米管@介孔碳/硫的制备与性能[J].南京工业大学学报(自然科学版),2018,40(2):41-46..
更新日期/Last Update: 2018-03-30