镁是一种极有应用前景的化学电源阳极材料。理论上,金属镁在放电过程中能提供较负的放电电位和较大的比容量。但在实际使用过程中,一些因素严重影响镁与生俱来的优异放电性能,如覆盖在阳极表面的放电产物、析氢副反应和金属颗粒的脱落等。阐述镁作为阳极在不同化学电源中的应用,并分析提高镁放电性能的途径。
Magnesium is a promising metal used as anodes for chemical power sources. This metal could theoretically provide negative discharge potential and exhibit large capacity during the discharge process. However, when the magnesium anode is adopted for practical applications, several issues, such as the discharge products adhered to the electrode surface, the self-discharge occurring on the anode material, and the detachment of metallic particles, adversely affect its inherently good discharge performance. In this work, the types of chemical power sources using magnesium as anodes were elaborated, and the approaches to enhance its anode performance were analyzed.