磷酸锌/锌复合材料的制备及其电化学性能研究  

Preparation and Electrochemical Performance of Zinc Phosphate/Zinc Composite Material

作　　者：陈启云 宫超 马硕 王茗萱 贺畅 鲍克燕 CHEN Qi-yun;GONG Chao;MA Shuo;WANG Ming-xuan;HE Chang;BAO Ke-yan(School of of Resources and Environmental Engineering,Jiangsu University of Technology,Jiangshu Changzhou 213001,China)

机构地区：[1]江苏理工学院化学化工学院,江苏常州213001

出　　处：《广州化工》2024年第9期20-22,36,共4页GuangZhou Chemical Industry

基　　金：大学生创新创业训练计划项目(202211463071Y)。

摘　　要：本文通过水热法制备了微纳片状结构的Zn_(3)(PO_(4))_(2)/Zn复合材料,发现Zn_(3)(PO_(4))_(2)/Zn复合材料具有比锌片更好的充放电比容量,活化后的电池放电比容量达到了200 mAh·g^(-1),平均放电比容量和容量衰减方面也优于锌箔。Zn_(3)(PO_(4))_(2)/Zn复合材料的结构有助于增加Zn^(2+)沉积/溶解的活性吸附位点,能在整个锌箔表面上引导均匀的电解液流动和锌沉积速率,产生自底向上均匀的锌沉积过程从而抑制了锌枝晶的生长,并能降低极化电压。材料的对称电池循环寿命均可以达到3000圈以上。Zn_(3)(PO_(4))_(2)/Zn composite with micro-nano-sheet structure was prepared by hydrothermal method.It was found that Zn_(3)(PO_(4))_(2)/Zn composite had better charge/discharge specific capacity than zinc foil,and the battery discharge specific capacity reached 200 mAh·g^(-1),and the average discharge specific capacity and capacity decay were also better than zinc foil.The structure of Zn_(3)(PO_(4))_(2)/Zncomposite helped to increase the active adsorption sites for Zn^(2+)deposition/dissolution,which could guide uniform electrolyte flow and zinc deposition rate on the entire zinc foil surface,resulting in a bottom-up uniform zinc deposition process,thereby inhibiting the growth of zinc dendrites and reducing the polarization voltage.The symmetrical battery cycle life of the Zn_(3)(PO_(4))_(2)/Zncomposite could reach 3000 cycles.

关 键 词：Zn_(3)(PO_(4))_(2)/Zn 电化学性能 二次电池 

分 类 号：TM911[电气工程—电力电子与电力传动]