Multi-transition metal compounds exhibit greater electroactivity and are preferred as electrode materials for supercapacitors (SC) due to their superior electrochemical properties compared to monometallic compounds. This article reviews the types of redox reactions of multi-transition metal compounds. The pseudocapacitance and potential window are summarized for bimetallic and trimetallic compounds. The simultaneous redox reaction occurring at the same electrode and electrolyte system is defined as matching Faradaic reaction. The matching Faradaic reaction involves simultaneous reversible redox reactions of two or more types of transition metal ions, which increases pseudocapacitance and broadens the potential window of multi-transition metal compounds, thereby achieving higher energy density. The positive effects of utilizing multi-transition metal compounds as SC electrodes are summarized. The matching Faradaic reaction mechanism is proposed for multi-transition metal compounds. The correlation between the valence band potential and redox reaction of multi-transition metal compounds is proposed to enhance the pseudocapacitance of such compounds. An overview is provided on the strategies for increasing capacitance and expanding the potential window of multi-transition metal compounds to enhance the energy density of SCs. Finally, recommendations are proposed to enhance the electrochemical performance of electrodes composed of multi-transition metal compounds in future applications.

中文翻译：

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多过渡金属化合物作为超级电容器电极材料的匹配法拉第反应：综述


多过渡金属化合物表现出更大的电活性，并且由于与单金属化合物相比具有优异的电化学性能而成为超级电容器（SC）电极材料的首选。本文综述了多元过渡金属化合物的氧化还原反应类型。总结了双金属和三金属化合物的赝电容和电势窗口。在同一电极和电解质体系中同时发生的氧化还原反应被定义为匹配法拉第反应。匹配的法拉第反应涉及两种或多种过渡金属离子同时发生可逆氧化还原反应，增加了赝电容，拓宽了多过渡金属化合物的电位窗口，从而实现了更高的能量密度。总结了利用多过渡金属化合物作为 SC 电极的积极效果。提出了多过渡金属化合物的匹配法拉第反应机理。提出了多过渡金属化合物的价带电势与氧化还原反应之间的相关性，以增强此类化合物的赝电容。概述了增加电容和扩大多过渡金属化合物的电位窗口以提高超级电容器能量密度的策略。最后，提出了在未来应用中增强多过渡金属化合物电极电化学性能的建议。