材料科学
锰
氧化还原
超级电容器
纳米孔
电解质
介孔材料
离子
多孔性
化学工程
扩散
电容
双锰矿
纳米技术
无机化学
电极
催化作用
氧化锰
化学
复合材料
有机化学
物理化学
冶金
工程类
物理
热力学
作者
Gaini Zhang,Jianhua Zhang,Huijuan Yang,Xifei Li
标识
DOI:10.1016/j.matlet.2021.130858
摘要
The manganese dioxide (MnO2) nanosheets with numerous in-plane nanopores are prepared via an in-situ redox reaction, then followed by an etch process. Originating from the reaction between Fe2+ ions and negatively charged MnO2 nanosheets, the obtained porous MnO2 nanosheets (P-MnO2) exhibit high micro/mesoporous structure, which provide a large ion-accessible surface area for efficient charge storage. Moreover, the designed nanopores of MnO2 nanosheets facilitate the electrolyte ions diffusion across the 2D MnO2 nanosheets. As a result, in comparison to the pristine MnO2, the P-MnO2 achieves a higher specific capacitance and desirable rate capability.
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