Xu Jiasheng, Wang Lin
College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, 113001, P.R. China.
Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry and Chemical Engineering, Bohai University, Jinzhou, 121013, P.R. China.
Sci Rep. 2019 Aug 29;9(1):12557. doi: 10.1038/s41598-019-48931-6.
Design and fabrication of a hierarchical core/shell MgCoO@MnO nanowall arrays on Ni-foam by a facile two-step hydrothermal method. The electrochemical measurements prove these composites with MnO definitely offer better supercapacitive performance of the MgCoO electrode material. The nanowall structure provides more active sites and charge transfer during the Faradic reaction. The MgCoO@MnO nanowall shows an excellent electrochemical performance (852.5 F g at 1 A g). The asymmetric supercapacitor is composed of the MgCoO@MnO nanowall and the activated carbon (AC). The energy densities of the asymmetric supercapacitor device can keep up 67.2 Wh·kg at 5760.0 W·kg. The MgCoO@MnO nanowall shows excellent supercapacitive performance and has a great potential for more research and application in the asymmetric supercapacitor devices field.
通过简便的两步水热法在泡沫镍上设计并制备了分级核壳结构的MgCoO@MnO纳米壁阵列。电化学测量证明，这些含有MnO的复合材料确实为MgCoO电极材料提供了更好的超级电容性能。纳米壁结构在法拉第反应过程中提供了更多的活性位点和电荷转移。MgCoO@MnO纳米壁表现出优异的电化学性能（在1 A g下为852.5 F g）。不对称超级电容器由MgCoO@MnO纳米壁和活性炭（AC）组成。不对称超级电容器装置的能量密度在5760.0 W·kg时可保持在67.2 Wh·kg。MgCoO@MnO纳米壁表现出优异的超级电容性能，在不对称超级电容器装置领域具有很大的进一步研究和应用潜力。
