溶解
氧化还原
电化学
阴极
水溶液
锰
化学
无机化学
化学工程
沉积(地质)
离子
电极
物理化学
有机化学
古生物学
工程类
生物
沉积物
作者
Haoyu Li,Huan Yao,Xinyi Sun,Chuanchao Sheng,Wei Zhao,Jianghua Wu,Shiyong Chu,Zhaoguo Liu,Shaohua Guo,Haoshen Zhou
标识
DOI:10.1016/j.cej.2022.137205
摘要
Due to the rapid development of energy storage systems from the goal of carbon neutrality, rechargeable aqueous Zn-MnO2 batteries have attracted growing attention. While the controversy surrounding various mechanisms, such as Zn2+ insertion, Zn2+/H+ co-insertion and Mn dissolution/deposition, leads to limitation of MnO2 cathodes, especially for the β-MnO2. Though showing promising performance in recent works, the reaction process and influence factors of β-MnO2 cathodes are still under debate. In this work, a complete MnO2/Mn2+ redox chemistry is proposed to explain the abnormal electrochemical behaviors of β-MnO2 cathodes, which indicates the reversible dissolution/deposition of layered manganese oxides appears after the initial MnO2 dissolution reaction. The revealed effects of interfacial environment in regulating the electrochemical reactions also provide a new perspective for studying the working mechanism of aqueous Zn-MnO2 batteries. Besides, the high specific capacity shown in the MnO2/Mn2+ redox chemistry also contributes to designing high-performance cathodes for AZIBs.
科研通智能强力驱动
Strongly Powered by AbleSci AI