富氧空位V掺杂MnO_(2)高性能水系锌离子电池电极材料的性能  

Performance of oxygen vacancy-rich V-doped MnO_(2) for high-performance aqueous zinc ion battery

作　　者：戴勤进 樊姗[1] 樊鹏阳 郑晓英 董伟 王梦雪 张永[1] DAI Qinjin;FAN Shan;FAN Pengyang;ZHENG Xiaoying;DONG Wei;WANG Mengxue;ZHANG Yong(College of Material Science and Engineering,Qiqihar University,Qiqihar,Heilongjiang 106000,China)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,齐齐哈尔106000

出　　处：《无机化学学报》2025年第3期453-460,共8页Chinese Journal of Inorganic Chemistry

基　　金：黑龙江省教育厅科学技术研究项目(No.12531773)资助。

摘　　要：通过较为简单的水热法制备了V掺杂MnO_(2)(VMO),并研究了其作为水系锌离子电池(ZIB)正极材料的电化学性能。材料表征和电化学性能结果表明V被均匀地掺杂到MnO_(2)中。V掺杂不仅扩大了MnO_(2)的层间距,增加了比表面积,还提高了其内部离子电导率。组装成的ZIB在电流密度为0.1 A·g^(-1)的条件下,初始放电容量可达362 mAh·g^(-1)。V的掺杂使MnO_(2)的晶格结构更加稳定,Jahn-Teller畸变效应减弱,电极材料的结构稳定性提高。当电流密度为1 A·g^(-1)时,经过300圈的充放电循环后,其放电容量仍然能够达到初始容量的87%。V-doped MnO_(2)(VMO)was prepared as the aqueous zinc ion battery(ZIB)cathode by a simple hydrothermal method and its electrochemical performance was tested.The material characterization and electrochemical performance test indicated that the bismuth was evenly incorporated into MnO_(2).V doping expanded the interlayer spacing of MnO_(2),increased the specific surface area,and improved its internal ionic conductivity.The initial discharge capacity of the assembled ZIB reached 362 mAh·g^(-1)at a current density of 0.1 A·g^(-1).The doping of V made the lattice structure of MnO_(2)more stable,weakened the Jahn-Teller distortion effect,and improved the structural stability of the electrode material.The specific capacity remained 87%of the initial stage after 300 cycles at a 1 A·g^(-1)current density.

关 键 词：锌离子电池 MnO_(2) V掺杂 高比电容 

分 类 号：O614.511[理学—无机化学] O614.711[理学—化学]