微弧氧化三氧化钨负极材料制备及电化学性能研究  

Preparation and Electrochemical Properties of Micro Arc oxide Tungsten Trioxide Anode Materials

作　　者：王振廷 谭婧 尹吉勇 魏冰 WANG Zhen-ting;TAN Jing;YIN Ji-yong;WEI Bing(School of Materials Science and Engineering,Heilongjiang Universityof Science and Technology,Heilongjiang Harbin 150022,China)

机构地区：[1]黑龙江科技大学材料科学与工程学院,黑龙江哈尔滨150022

出　　处：《广州化工》2022年第8期67-70,共4页GuangZhou Chemical Industry

基　　金：中央引导地方科技发展专项黑龙江省石墨烯应用研究重点实验室项目(ZY20B12)。

摘　　要：采用微弧氧化法,以钛箔作为基体,钨酸盐为电解液,成功制备出WO_(3)/TiO_(2)复合膜作为锂离子电池负极材料。利用扫描电子显微镜、X射线衍射仪对复合膜组织结构进行表征,复合膜主要由WO_(3)和TiO_(2)组成。当电解液中钨酸钠质量为70 g时,测得电池电化学性能最稳定,比容量为605.684 mAh/g,循环200圈后比容量保持在141.466 mAh/g。涂覆石墨烯后,初始比容量提升至662.3 mAh/g,循环200圈后比容量保持在614.1 mAh/g,容量保持率高达92.7%,电化学性能更好。Adopted microarc oxidation method,WO_(3)/TiO_(2) composite film was successfully prepared in tungstate electrolyte using titanium as substrate and used as anode material for lithium ion battery.The structure of the film was characterized by scanning electron microscope and X-ray diffractometer.The film layer was composed of WO_(3) and TiO_(2).The results showed that when the mass of sodium tungstate in electrolyte was 70 g,the most stable electrochemical performance of the cell was 605.684 mAh/g.After 200 cycles,the specific capacity remainsed 141.466 mAh/g.After coated with graphene,the initial specific capacity was increased to 662.3 mAh/g.And after 200 cycles,the specific capacity remained at 614.1 mAh/g with a capacity retention rate of 92.7%indicating better electrochemical performance.

关 键 词：锂离子电池 石墨烯 三氧化钨 微弧氧化 钨酸钠溶液 

分 类 号：TM242[一般工业技术—材料科学与工程]