Macroporous free-standing nano-sulfur/reduced graphene oxide paper as stable cathode for lithium-sulfur battery

被引：194

作者：

Wang, Chao ^{[1
,2
]}

Wang, Xusheng ^{[1
]}

Wang, Yanjie ^{[2
]}

Chen, Jitao ^{[1
]}

Zhou, Henghui ^{[1
]}

Huang, Yunhui ^{[2
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hunan, Peoples R China

来源：

NANO ENERGY | 2015年 / 11卷

关键词：

Li-S batteries; Free-standing; Reduced graphene oxide paper; Electrochemical performance; LI-S BATTERIES; SUPERIOR PERFORMANCE; COMPOSITE; ELECTRODE;

D O I：

10.1016/j.nanoen.2014.11.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A macroporous free-standing nano-sulfur/graphene (S-rGO) paper is introduced directly as an electrode for lithium-sulfur battery. The S-rGO paper is synthesized through a facile freeze drying route followed by low-temperature heat treatment. The flexible S-rGO paper not only provides a conductive framework for electron transport but also alleviates volume effect during cycling. The as-designed S-rGO paper exhibits excellent rate capability and cyclability. The specific discharge capacity is 800 mAh g(-1) after 200 cycles at a current density of 300 mA g(-1) and the capacity fading rate is only 0.035% per cycle. Even at a high current density of 1500 mA g(-1), it still shows a good performance. We ascribe the high performance of the S-rGO paper to stable macroporous structure and strong interaction between sulfur nanoparticles and graphene. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：678 / 686

页数：9

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