水锌矿纳米片/石墨烯复合材料的制备和储锂性能研究  

Study on Preparation and Lithium Storage Performance of Hydrozincite Nanosheets/Graphene Composites

作　　者：高卫星 黄金鑫 郑继辉 孔凡军 陶石 韩志达 钱斌[1,2] 江学范 GAO Weixing;HUANG Jinxin;ZHENG Jihui;KONG Fanjun;TAO Shi;HAN Zhida;QIAN Bin;JIANG Xuefan(School of Electronic and Information Engineering,Changshu Institute of Technology,Changshu 215500,China;Jiangsu Laboratory of Advanced Functional Materials,Changshu Institute of Technology,Changshu 215500,China)

机构地区：[1]常熟理工学院电子信息工程学院,江苏常熟215500 [2]常熟理工学院江苏省新型功能材料重点建设实验室,江苏常熟215500

出　　处：《常熟理工学院学报》2021年第2期1-4,共4页Journal of Changshu Institute of Technology

基　　金：国家自然科学基金项目“强磁场下磁性拓扑量子材料AMnPn2(A=Ca,Sr,Ba,Eu;Pn=Sb,Bi)的基态调控和多种量子态间耦合机制研究”(U1832147)。

摘　　要：通过简单的水热法合成水锌矿(Zn5(CO3)2(OH)6)纳米片,并对其电化学性能进行研究.作为负极材料,水锌矿纳米片首圈放电容量虽然可以达到1500 mAh·g^(-1),但容量随着循环圈数的增加而不断衰减.为此,我们采用石墨烯复合的方法来提高水锌矿的循环容量.石墨烯的存在可以有效提高水锌矿的导电性,加快电荷转移,同时也可以缓解电极材料在循环过程中发生大的体积变化,提高循环稳定性.In this paper,hydrozincite(Zn5(CO3)2(OH)6) nanosheets were synthesized by a simple hydrothermal method and their electrochemical properties were studied.As an anode electrode material,the initial discharge capacity of hydrozincite nanosheets can reach 1500 mAh·g-1.However,the capacity decreases with the increase of the number of cycles.Thus,the graphene modification method is used to improve the cycling capacity of hydrozincite nanosheets.The presence of graphene can not only effectively improve the electrical conductivity of hydrozincite nanosheets and accelerate the charge transfer,but it can also alleviate the large volume change of electrode material in the cycling process and improve the cycling stability.

关 键 词：水锌矿 石墨烯 负极材料 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]