3D MoS_(2)/graphene nanoflowers as anode for advanced lithium-ion batteries  

先进锂离子电池用三维纳米花状MoS_(2)/石墨阳极

作　　者：Han-bing HE Zhen LIU Chao-qun PENG Jun LIU Xiao-feng WANG Jing ZENG 何汉兵;刘真;彭超群;刘军;王小锋;曾婧(中南大学冶金与环境学院,长沙410083;中南大学材料科学与工程学院,长沙410083)

机构地区：[1]School of Metallurgy and Environment,Central South University,Changsha 410083,China [2]School of Materials Science and Engineering,Central South University,Changsha 410083,China

出　　处：《Transactions of Nonferrous Metals Society of China》2022年第12期4041-4049,共9页中国有色金属学报（英文版）

基　　金：The financial support of the Natural Science Foundation of Changsha,China(No.kq2202094);National Key R&D Program of China(No.2021YFB3701400)。

摘　　要：Vertical MoS2nanosheets were controllably patterned onto graphene as nanoflowers through a two-step hydrothermal method. The interconnected network and intimate contact between MoS2nanosheets and graphene by vertical channels enabled a high mechanical integrity of electrode and cycling stability. In particular, MoS2/graphene nanoflowers anode delivered an ultrahigh specific capacity of 901.8 mA·h/g after 700 stable cycles at 1000 mA/g and a corresponding capacity retention as 98.9% from the second cycle onwards.采用两步水热合成法将垂直的二硫化钼(MoS_(2))纳米片可控地负载于石墨烯表面形成纳米花。二硫化钼纳米片和石墨烯形成紧密结合的垂直交互网络结构,使电极具有高的机械完整性和循环稳定性。所得MoS_(2)/石墨烯纳米花阳极在1000 mA/g电流密度下稳定循环700次后,仍具有901.8 mA·h/g的超高比容量,且从第二次循环开始,相应的容量保持率为98.9%。

关 键 词：MoS_(2) GRAPHENE 3D nanoflowers NANOSHEETS lithium-ion batteries 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]