碳纳米管/氧化石墨烯/硫复合正极材料的制备及其电化学性能

引用本文: 徐桂银, 丁兵, 聂平, 骆宏钧, 张校刚. 碳纳米管/氧化石墨烯/硫复合正极材料的制备及其电化学性能[J]. 物理化学学报, 2013, 29(03): 546-552. doi: 10.3866/PKU.WHXB201301081 shu

Citation: XU Gui-Yin, DING Bing, NIE Ping, LUO Hong-Jun, ZHANG Xiao-Gang. Preparation and Electrochemical Performance of Carbon Nanotubes/ Graphene Oxide/Sulfur Complex Cathode Material[J]. Acta Physico-Chimica Sinica, 2013, 29(03): 546-552. doi: 10.3866/PKU.WHXB201301081 shu

碳纳米管/氧化石墨烯/硫复合正极材料的制备及其电化学性能

基金项目:
国家自然科学基金(21173120) (21173120)

江苏省自然科学基金重点专项(BK2011030) (BK2011030)

南京航空航天大学研究生创新基地(实验室)开放基金(kfjj120209)资助 (实验室)开放基金(kfjj120209)

摘要:

以碳纳米管和氧化石墨烯(CNTs/ )为主体材料, 通过化学还原法制备了CNTs/ 负载硫的复合正极材料CNTs/ /S. 扫描电子显微镜(SEM)及透射电子显微镜(TEM)测试表明, CNTs 均匀插层在片间, 从而形成三维多孔结构, 有利于电解液的浸润; 活性物质硫均匀地负载在CNTs/ 表面. 电化学测试表明,CNTs/ /S复合材料具有高的比容量和良好的循环稳定性: 在1C倍率电流密度下, 复合材料首次放电比容量高达904 mAh·g^-1, 经过50圈循环之后, 复合材料的比容量仍保持在578 mAh·g^-1.

关键词:

English

Preparation and Electrochemical Performance of Carbon Nanotubes/ Graphene Oxide/Sulfur Complex Cathode Material

1.
College of Material Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R. China
Received Date: 08 October 2012
Available Online: 25 February 2013
Fund Project:
国家自然科学基金(21173120)

江苏省自然科学基金重点专项(BK2011030)

南京航空航天大学研究生创新基地(实验室)开放基金(kfjj120209)资助

Abstract:

Three-dimensional (3D) hierarchical CNTs/ /S ternary composites were prepared by solution-based reaction-deposition, using graphene oxide ( ) and carbon nanotubes (CNTs) as precursors. Scanning electron microscopy (SEM) and transmission electron microscope (TEM) indicated a uniform S coating on CNTs/ which arose because of the large specific surface area. CNTs interspersed between the layers to form a 3D porous structure. Constant current charge-discharge tests showed that CNTs/ /S composites had a high discharge capacity and excellent cycling stability, and delivered a high initial discharge capacity of 904 mAh·g^-1 at 1C rate. After 50 cycles at the same rate, the reversible capacity remained at 578 mAh·g^-1.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

碳纳米管/氧化石墨烯/硫复合正极材料的制备及其电化学性能

English

Preparation and Electrochemical Performance of Carbon Nanotubes/ Graphene Oxide/Sulfur Complex Cathode Material

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

碳纳米管/氧化石墨烯/硫复合正极材料的制备及其电化学性能

English

Preparation and Electrochemical Performance of Carbon Nanotubes/ Graphene Oxide/Sulfur Complex Cathode Material

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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