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[1]杨学兵,王传新,汪建华,等.CNF/Fe在锂硫电池正极中的应用[J].武汉工程大学学报,2011,(05):53-56.[doi:10.3969/j.issn.16742869.2011.05.015]
 YANG Xuebing,WANG Chuanxin,WANG Jianhua,et al.Application of CNF/Fe in cathode of lithium/sulfur battery[J].Journal of Wuhan Institute of Technology,2011,(05):53-56.[doi:10.3969/j.issn.16742869.2011.05.015]
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CNF/Fe在锂硫电池正极中的应用
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年05期
页码:
53-56
栏目:
材料科学与工程
出版日期:
2011-05-31

文章信息/Info

Title:
Application of CNF/Fe in cathode of lithium/sulfur battery
文章编号:
16742869(2011)05005304
作者:
杨学兵王传新汪建华张行
武汉工程大学湖北省等离子体化学与新材料重点实验室,湖北 武汉 430074
Author(s):
YANG XuebingWANG ChuanxinWANG Jianhua ZHANG Hang
Provincial Key Laboratory of Plasma Chemistry and Advanced Materials,
Wuhan Institute of Technology, Wuhan 430074, China
关键词:
热丝化学气相沉积纳米碳纤维/铁(CNF/Fe)正极材料锂硫电池
Keywords:
hot filament chemical vapor deposition (HFCVD)carbon nanofiber/ iron (CNF/Fe)cathode materiallithium/sulfur battery
分类号:
TM912.9
DOI:
10.3969/j.issn.16742869.2011.05.015
文献标志码:
A
摘要:
以铁粉(Fe)为催化剂,通过热丝化学气相沉积的方法制备纳米碳纤维(CNF),得到CNF/Fe复合粉体,后将其代替乙炔黑用于锂硫电池正极.采用扫描电子显微镜和X射线衍射的方法对CNF/Fe进行表面形貌和结构表征,采用恒流放电和交流阻抗测量法对正极进行电化学性能测试.结果表明,制备的CNF/Fe中CNF的直径在200 nm附近.在0.2 mA/cm2的电流密度下充放电,含有CNF/Fe的正极在2.0 V附近出现长的放电平台,正极中硫的初次放电比容量达801 mAh/g,40次循环后的可逆放电比容量仍有498 mAh/g.
Abstract:
Carbon nanofiber (CNF) was prepared by hot filament chemical vapor deposition (HFCVD) with iron (Fe) powder as catalyst.The composite powder of CNF/Fe then replaced acetylene black and was used in the cathode of lithium/sulfur battery.Methods of scanning electron microscopy and Xray diffraction were adopted to characterize the surface features and structure.Moreover,The electrochemical performance of cathode was tested by methods of galvanostatic discharge and measurement of alternating current impedance.Results indicate that the diameter of prepared CNF is about 200 nanometer.When discharge current density is 0.2 mA/cm2,cathode containing CNF/Fe shows a long discharge platform at around 2.0 V.Initial discharge specific capacity of sulfur in the cathode with CNF/Fe is 801 mAh/g.After 40 cycles,the reversible discharge specific capacity is 498 mAh/g.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:20101220基金项目:国家重点基础研究发展计划资助项目(2011CB201600),湖北省自然科学基金(2007ABA006),湖北省教育厅重点项目(2007)作者简介:杨学兵(1988),男,湖北荆州人,硕士研究生.研究方向:功能薄膜材料.指导老师:王传新,男,教授,博士.研究方向:低温等离子体技术.
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