磷酸钒锂混合电池在不同电解液下电化学性能比较  

Comparison of Electrochemical Performance of Lithium Vanadium Phosphate Hybrid Battery in Different Electrolytes

作　　者：万超意 刘昊 王瑜 刘思佳 梁斌 吴贤文[1,2] 蒋剑波 Wan Chaoyi;Liu Hao;Wang Yu;Liu Sijia;Liang Bin;Wu Xianwen;Jiang Jianbo(School of Chemistry and Chemical Engineering of Jishou University,Jishou 416000;Hunan Provincial 211 Collaborative Innovation Center for Manganese Zinc Vanadium Industry Technology,Jishou 416000;Hunan Provincial Key Laboratory for Mineral Cleaner Production and Green Functional Materials Development,Jishou 416000,China)

机构地区：[1]吉首大学化学化工学院,湖南吉首416000 [2]锰锌钒产业技术湖南省211协同创新中心,湖南吉首416000 [3]矿物清洁生产与绿色功能材料开发湖南省重点实验室,湖南吉首416000

出　　处：《广东化工》2023年第6期10-13,7,共5页Guangdong Chemical Industry

基　　金：湖南省自然科学基金项目(2020JJ4506);湖南省教育厅科学研究项目(18C0551);锰锌钒产业技术协同创新中心支持基金项目(MXF201917);矿物清洁生产与绿色功能材料开发湖南省重点实验室开放基金项目(KWCL202002);吉首大学研究生科研项目(Jdy20004)。

摘　　要：采用流变相法制备磷酸钒锂(Li_(3)V_(2)(PO_(4))_(3))正极材料,通过制作成软包电池在不同混合电解液体系ZnSO_(4)+Li_(2)SO_(4)、Zn(NO_(3))_(2)+LiNO_(3)、Zn(OTF)_(2)+LiTFSi三种组合电解液中,对磷酸钒锂作为正极的水系Zn^(2+)/Li^(+)混合电池进行了一些列电化学性能研究。通过在三种组合电解液下进行循环伏安,交流阻抗,倍率充放电性能测试,发现在常温下0.6~2.0 V电压区间内以0.1 C充放电测试首次放电比容量分别为:60.43 mAh·g^(-1)、61.1894 mAh·g^(-1)、94.25 mAh·g^(-1),在循环伏安、倍率性能测试、交流阻抗结果表明LVP正极材料在Zn(OTF)_(2)+LiTFSi组合电解液中性能最佳。Lithium vanadium phosphate(Li_(3)V_(2)(PO_(4))_(3))as cathode material was prepared by rheological phase method.The electrochemical properties of the water-based Zn^(2+)/Li^(+) hybrid battery with lithium vanadium phosphate as cathode were studied in different mixed electrolyte systems ZnSO_(4)+Li_(2)SO_(4),Zn(NO_(3))_(2)+LiNO_(3),Zn(OTF)_(2)+LiTFSi.Through cyclic voltammetry,AC impedance and rate charge discharge performance tests under three combined electrode liquids,it was found that the first discharge specific capacity of 0.1 C charge discharge test in the voltage range of 0.6~2.0 V at normal temperature was and 60.43 mAh·g^(-1),61.1894 mAh·g^(-1),94.25 mAh·g^(-1),respectively.The results of cyclic voltammetry,rate performance test and AC impedance showed that LVP cathode material had the best performance in Zn(OTF)_(2)+LiTFSi combined electrolyte.

关 键 词：正极材料 流变相法 磷酸钒锂 水系混合电池 电解液 

分 类 号：TQ[化学工程]