多孔球状V2O5/PEDOT水系锌离子电池电极材料制备
Preparation of porous spheroidal V2O5/PEDOT water system zinc-ion battery electrode material
严宇琪 1樊姗 1韩洋 1樊鹏阳 1郑晓英 1戴勤进 1张金鹏1
作者信息
- 1. 齐齐哈尔大学 材料科学与工程学院,黑龙江 齐齐哈尔 161006
- 折叠
摘要
采用简单的水热合成法制备得到了多孔球状的V2O5与V2O5/PEDOT电极材料.用扫描电镜(SEM)、透射电镜(TEM)、X衍射测试(XRD)对样品进行了结构表征.并将其组装成锌离子电池,通过循环伏安(CV)、恒电流充放电(GCD)等测试手段研究其电化学性能.结果表明,V2O5/PEDOT电极材料在电流密度为0.1 A·g-1时,放电容量为359 mAh·g-1,高于相同条件下制备的V2O5电极材料(160 mAh·g-1).在5 A·g-1电流密度时,经过2 000 次恒流充放电循环测试后,放电容量从 147 mAh·g-1下降到142 mAh·g-1,容量保持率为 96.6%.制备得到的V2O5/PEDOT电极材料具有优异的电化学性能.
Abstract
Porous spheroidal V2O5 and V2O5/PEDOT electrode materials were prepared by a simple hydrothermal synthesis method.The structures of the samples were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),and X-ray diffraction(XRD).After assembling their into zinc ion batteries,their electrochemical measurement were studied through testing methods such as cyclic voltammetry(CV)and galvanostatic charge/discharge(GCD).The result showed that V2O5/PEDOT electrode material had a discharge capacity of 359 mAh·g-1 at a current density of 0.1 A·g-1,which was higher than the V2O5 electrode material(160 mAh·g-1)under the same conditions.After 2 000 galvanostatic charge/discharge cycles at a current density of 5 A·g-1,the discharge capacity decreased from 147 mAh·g-1 to 142 mAh·g-1 with a capacity retention rate of 96.6%.The prepared V2O5/PEDOT electrode material had excellent electrochemical performance.
关键词
水热法/五氧化二钒/PEDOT/锌离子电池Key words
hydrothermal method/V2O5/PEDOT/zinc-ion battery引用本文复制引用
基金项目
黑龙江省大学生创新创业训练计划(S202310232108)
出版年
2024
国家科技期刊平台
NSTL
万方数据