化工学报2017，Vol.68Issue(11)：4333-4340,封3,9.DOI:10.11949/j.issn.0438-1157.20170324
微波法制备还原氧化石墨烯及其在锂硫电池中的应用
Preparation of reduced graphene oxide by microwave method and its application in lithium-sulfur batteries
摘要
Abstract
Oxidized graphite (GO) prepared by modified Hummer's method was immersed in carbonic acid, and consequently stripped to a low grained reduced graphene oxide by microwave solid phase method. This method has simplicity for operator, energy efficiency and time saving, in which experimental conditions are mild with free of toxic strong reducer. As cathode composites for lithium-sulfur battery, reduced graphene oxide/nano-sulfur (MRGO/NS) were prepared byin-situ precipitation reaction at low temperature. The crystal structure and morphology of the MRGO and MRGO/NS composites were characterized by FT-IR, XRD, SEM, TEM and BET, respectively. The electrochemical performance of the composites was determined by galvanostatic charge-discharge test and impedance spectroscopy. The results show that the MRGO obtained from GO immersed in carbonic acid and stripped by microwave solid phase method is folding fan-like graphene, which can provide space to accommodate the active materials for lithium-sulfur batteries, and alleviate the shuttle effect to improve the cycle performance and the C-rate performance of the electrode material.关键词
还原氧化石墨烯/微波法/纳米硫/复合材料/锂硫电池Key words
reduced graphene oxide/microwave method/nano-sulfur/composites/lithium-sulfur batteries分类
化学化工引用本文复制引用
杨蓉,李兰,王黎晴,付欣,燕映霖,陈利萍,路蕾蕾..微波法制备还原氧化石墨烯及其在锂硫电池中的应用[J].化工学报,2017,68(11):4333-4340,封3,9.基金项目
国家国际科技合作专项(2015DFR50350) （2015DFR50350）
国家自然科学基金项目(21503166) （21503166）
陕西省教育厅自然科学专项(15JK1538) （15JK1538）
2017年度陕西省科技计划项目(2017GY-160). supported by the International Science Technology Cooperation Program of China(2015DFR50350), the National Natural Science Foundation of China(21503166), the Scientific Research Program Funded by Shaanxi Provincial Education Department(15JK1538) and the Science and Technology Project of Shaanxi Province(2017GY-160). （2017GY-160）
