Li Zhuo, Han Lu, Wang Yongfei, Li Xinyan, Lu Jinlin, Hu Xianwei
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China.
School of Metallurgy, Northeastern University, Shenyang, 110819, China.
Small. 2019 Aug;15(32):e1900105. doi: 10.1002/smll.201900105. Epub 2019 Mar 7.
Rechargeable magnesium batteries (RMBs) that use pure Mg or Mg alloy as anode and materials allowing Mg ions to insert/extract as cathode have many advantages such as high energy density, environmental friendliness, low cost, and safety of handling. RMBs are regarded as a promising candidate for portable power sources and heavy load energy devices. However, there are still some technological issues impeding their commercial application. The most important issue is the absence of applicable cathode materials because of the high charge density, strong polarization effect, and very slow insertion/extraction speed of Mg ions. In recent years, the research reports on the cathode materials of RMBs have increased significantly. Here, an extensive number of research papers are reviewed in terms of the microstructure characteristics of cathode materials for RMBs. The status and issues of cathode materials are analyzed and discussed in detail. The future development directions and perspectives are prospected for providing an understanding of the related research activities on RMBs.
以纯镁或镁合金作为阳极、允许镁离子嵌入/脱出的材料作为阴极的可充电镁电池（RMB）具有许多优点，如高能量密度、环境友好、成本低以及操作安全等。可充电镁电池被视为便携式电源和重负载能量装置的一个有前景的候选者。然而，仍然存在一些技术问题阻碍其商业应用。最重要的问题是由于镁离子的高电荷密度、强极化效应以及非常缓慢的嵌入/脱出速度，缺乏适用的阴极材料。近年来，关于可充电镁电池阴极材料的研究报告显著增加。在此，从可充电镁电池阴极材料的微观结构特征方面对大量研究论文进行综述。详细分析和讨论了阴极材料的现状和问题。展望了未来的发展方向和前景，以便对可充电镁电池的相关研究活动有所了解。
