庄强强, 王保峰, 吴宝柱, 汪浩立, 吴茜凯. 高性能长循环锌离子电池双金属氧化物ZnMnO3正极材料[J]. 华南师范大学学报(自然科学版), 2022, 54(1): 30-35. doi: 10.6054/j.jscnun.2022005
引用本文: 庄强强, 王保峰, 吴宝柱, 汪浩立, 吴茜凯. 高性能长循环锌离子电池双金属氧化物ZnMnO3正极材料[J]. 华南师范大学学报(自然科学版), 2022, 54(1): 30-35. doi: 10.6054/j.jscnun.2022005
ZHUANG Qiangqiang, WAN Baofeng, WU Baozhu, WANG Haoli, WU Xikai. A Bimetallic Oxide ZnMnO3 as a High-performance Long-cycle Cathode for Zinc Ion Batteries[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(1): 30-35. doi: 10.6054/j.jscnun.2022005
Citation: ZHUANG Qiangqiang, WAN Baofeng, WU Baozhu, WANG Haoli, WU Xikai. A Bimetallic Oxide ZnMnO3 as a High-performance Long-cycle Cathode for Zinc Ion Batteries[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(1): 30-35. doi: 10.6054/j.jscnun.2022005

高性能长循环锌离子电池双金属氧化物ZnMnO3正极材料

A Bimetallic Oxide ZnMnO3 as a High-performance Long-cycle Cathode for Zinc Ion Batteries

  • 摘要: 通过溶胶-凝胶法制备了一种锰基双金属氧化物ZnMnO3纳米颗粒材料,首次将其应用于水系锌离子电池正极材料。在300 mA/g的电流密度下表现出高的放电比容量(175 mA·h/g)。在1 000 mA/g的电流密度下放电比容量仍然高达134 mA·h/g。与单金属氧化物相比,ZnMnO3表现出更优异的循环稳定性和更好的倍率性能。通过非原位的电极表面扫描电子显微镜(SEM)形貌表征,ZnMnO3在循环过程中能够保持结构的稳定性,从而具有稳定的长循环性能。通过非原位X射线衍射(XRD)分析表明,ZnMnO3的储锌行为符合嵌入脱出机理。

     

    Abstract: A bimetallic oxide (ZnMnO3) is synthesized with the sol-gel method and used as the cathode for zinc ion batteries for the first time. Electrochemical tests show that the ZnMnO3 exhibits a high specific discharge capacity (175 mA·h/g at 300 mA/g). At a current density of 1 000 mA/g, the specific discharge capacity is still 134 mA ·h/g. Compared with monometallic oxides, the material exhibits more excellent cycling stability and better rate performance. The ex-situ scanning electron microscope (SEM) characterization of the electrode surface morphology shows that the morphology of ZnMnO3 can be well maintained during the cycling process so that it can have stable long-cycle performance. According to the results of ex-situ X-ray diffraction (XRD) analysis, the zinc storage mechanism of ZnMnO3 is the insertion and extraction reaction.

     

/

返回文章
返回