High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries | |
Wang, Chao ; Su, Kai ; Wan, Wang ; Guo, Hua ; Zhou, Henghui ; Chen, Jitao ; Zhang, Xinxiang ; Huang, Yunhui | |
刊名 | journal of materials chemistry a
![]() |
2014 | |
关键词 | LI-S BATTERIES HIGH-CAPACITY ION BATTERIES CYCLE LIFE PERFORMANCE PARTICLES OXIDE |
DOI | 10.1039/c3ta14921h |
英文摘要 | A porous three-dimensional nitrogen-doped graphene (3D-NG) was introduced as an interconnected framework for sulfur in lithium-sulfur batteries. The 3D-NG-sulfur composite (3D-NGS) with a high sulfur content of 87.6 wt% was synthesized via a facile one-pot solution method and sulfur was well dispersed within it. The as-designed 3D-NGS composite exhibits excellent rate capability and cyclability. The discharge specific capacity is 792 mA h g(-1) after 145 cycles at a current density of 600 mA g(-1) and the capacity fading rate is 0.05% per cycle. Even at a high rate of 1500 mA g(-1), the composite still shows a good cycle performance with a capacity of 671 mA h g(-1) after 200 cycles. The outstanding electrochemical performance can be attributed to the flexible porous 3D structure and N-doping in graphene. The flexible 3D-NG can provide a conductive framework for electron transport and alleviate the volume effect during cycling. N-doping can facilitate the penetration of Li ions across the graphene and restrain sulfur due to the strong chemical bonding between S and the nearby N atoms.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000332935300025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 100; ARTICLE; chenjitao@pku.edu.cn; huangyh@mail.hust.edu.cn; 14; 5018-5023; 2 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/150650] ![]() |
专题 | 化学与分子工程学院 |
推荐引用方式 GB/T 7714 | Wang, Chao,Su, Kai,Wan, Wang,et al. High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries[J]. journal of materials chemistry a,2014. |
APA | Wang, Chao.,Su, Kai.,Wan, Wang.,Guo, Hua.,Zhou, Henghui.,...&Huang, Yunhui.(2014).High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries.journal of materials chemistry a. |
MLA | Wang, Chao,et al."High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries".journal of materials chemistry a (2014). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论