| 富氧空位V掺杂MnO2高性能水系锌离子电池电极材料的性能 | |
| Performance of oxygen vacancy-rich V-doped MnO2 for high-performance aqueous zinc ion battery | |
| 摘要: 通过较为简单的水热法制备了V掺杂MnO2(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MnO2中。V掺杂不仅扩大了MnO2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 MnO2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%。 | |
| 关键词: 锌离子电池 MnO2 V掺杂 高比电容 | |
| 基金项目: 黑龙江省教育厅科学技术研究项目(No.12531773)资助。 | |
| Abstract: V-doped MnO2 (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 MnO2. V doping expanded the interlayer spacing of MnO2, 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 MnO2 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. | |
| Keywords: zinc ion battery MnO2 V-doping high specific capacitance | |
| 投稿时间：2024-09-06 修订日期：2025-01-06 | |
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| 戴勤进,樊姗,樊鹏阳,郑晓英,董伟,王梦雪,张永.富氧空位V掺杂MnO2高性能水系锌离子电池电极材料的性能[J].无机化学学报,2025,41(3):453-460. | |
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