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还原氧化石墨烯气凝胶载硫电极的电化学性能

Electrochemical performance of reduced graphene oxide aerogel loading sulfur electrodes

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【Author】 WANG Ming;YUAN Hong-yan;ZHANG Jian;LIU Hong-tao;College of Chemistry and Chemical Engineering,Central South University,Hunan Provincial Key Laboratory of Chemical Power Sources,Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources;

【通讯作者】刘洪涛;

【机构】中南大学化学化工学院化学电源湖南省重点实验室锰资源高效清洁利用湖南省重点实验室；

【摘要】以还原氧化石墨烯气凝胶(r GA)为碳载体,采用熔融升华法、水溶剂热法、二硫化碳溶剂热法、二硫化碳/水混合溶剂热法、Na2S2O3歧化分解法和Na2Sx酸化法等方法载硫。熔融升华法的总体效果最好,复合物的载硫率为78. 0%,电极以0. 2 C在1. 7～2. 8 V充放电,首次放电比容量为1100 m Ah/g,库仑效率接近100%。更多还原

【Abstract】 Using the reduced graphene oxide aerogel( r GA) as carbon support,the sulfur was carried by the method of MS-rGA/S,H2O-rGA/S,CS2-r GA/S,CS2/H2O-rGA/S,Na2S2O3-r GA/S,Na2Sx-r GA/S. The totality effect of the MS-rGA/S was the best,the composites loading rate of sulfur was 78. 0%. When the electrode was charged-discharged in 1. 7-2. 8 V at 0. 2 C,the initial specific discharge capacity was 1 100 m Ah/g and the Coulombic efficiency was near 100%.更多还原

【关键词】锂硫电池；正极材料；石墨烯气凝胶；复合硫电极；
【Key words】 lithium-sulfur battery； cathode material； reduced graphene oxide aerogel； sulfur-based composite electrode；

【基金】湖南省科技计划项目(2017TP1001,2016TP1007);中南大学研究生科研创新项目(2017zzts782)

【文献出处】电池 ,Battery Bimonthly , 编辑部邮箱 ,2018年06期

【分类号】TM912
【被引频次】5
【下载频次】372

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