摘要
采用一种简单的溶剂热方法,成功制得具有银耳状的多层级钼酸铋纳米花材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FT-IR)等测试手段对其物理性质进行了表征。以钼酸铋为锂离子电池负极活性物质,通过循环伏安,交流阻抗和恒电流充放电对钼酸铋的电化学性能进行测试,结果显示在电流密度为20mA/g的条件下,钼酸铋的首次放电比容量达177.8mAh/g,循环30周期后库伦效率仍保持在100%左右。
Tremella-like hierarchical bismuth molybdate nanoflower was prepared by a simple hydrothermal method.To explore the possibility of using as negative electrodes in lithium-ion battery,the structural properties were studied by X-ray diffraction(XRD),scanning electron microscopy(SEM)and fourier transform infrared spectroscopy(FT-IR).The electrochemical performances were tested by cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic method.The results displayed that the initial specific capacitance of bismuth molybdate was177.8 mAh/g at a current density of 20 mA/g and the efficiency of coulomb was still about 100% after 30 cycles.
作者
张霞
李艳
李丹青
苗永霞
程少鹏
张玉军
许元栋
Zhang Xia;Li Yan;Li Danqing;Miao Yongxia;Cheng Shaopeng;Zhang Yujun;Xu Yuandong(College of Chemistry,Chemical and Environmental Engineering,H enan University of Technology,Zhengzhou 450001)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第1期132-135,共4页
New Chemical Materials
基金
河南省科技攻关计划(152102210061)
河南省高等学校重点科研项目(17A150025)
河南工业大学青年骨干教师培育计划(2015007)
河南工业大学高层次人才科研启动基金(2016BS011)
关键词
钼酸铋
纳米花
锂离子电池
bismuth molybdate
nanoflower
lithium-ion battery
