期刊
CARBON
卷 69, 期 -, 页码 543-551出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.12.065
关键词
-
资金
- National Research Foundation of Korea (NRF)
- Ministry of Science, ICT and future Planning, Korea (MSIP) [NRF-2012R1A2A1A01003537]
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and future Planning, Korea (MSIP) [NRF-2012M3A6A5055744]
- MRSEC Program of the NSF [DMR 1121053]
- NSF
- ConvEne IGERT Program of the National Science Foundation [DGE 0801627]
The lithium-sulfur (Li-S) system is an attractive candidate to replace the current state-ofthe-art lithium-ion battery due to the promising theoretical charge capacity of 1675 mA h/g and energy density of 2500 Wh/kg; however, the dissolution of intermediate polysulfides into the organic liquid electrolyte during cycling hinders its practical realization. We report the synthesis of mesoporous graphene-silica composite (m-GS) as a supporting material of sulfur for Li-S batteries. The ordered porous silica structure was synthesized parallel to functionalized graphene sheets (FGSs) through the ternary cooperative assembly of the graphene, silica, and block copolymer precursors. The well-defined, unique mesoporous structure integrates the electronic conductivity of graphene and the dual functions of silica as a structure building block and in situ polysulfide ab-/ad-sorbing agent to give a Li-S battery that has both good retention ability of polysulfides and good rate capability. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据