Abstract：MnO2@Ni(OH)2 core/shell structure nanowire arrays (NWAs) supported on carbon cloth were successfully synthesized by a two-step method, applied in flexible all-solid-state asymmetric supercapacitors (ASCs). The Ni(OH)2 nanosheets wrapped on the surface of each MnO2 nanowire uniformly, which can increase the capacitance of MnO2 NWAs to a high specific capacitance of 432.8F/g at 5mV/s. The electrode also exhibits good cycling ability, 92.3% of the initial capacity can be remained after 2000 cycles at 5A/g. The assembled MnO2@Ni(OH)2//MnO2 asymmetric device with a maximum voltage of 1.8V has been fabricated, delivering both high energy density (69.2Wh/kg) and power density (4.5kW/kg at 54.6Wh/kg). These results show that MnO2@Ni(OH)2 NWAs with large specific surface area, combined with the flexible carbon cloth substrate can be applied in supercapacitor field in large scale.
闫慧君, 白建伟, 王玉, 周红霞, 景晓燕, 王君, 白雪峰. 负载高性能MnO2@Ni(OH)2核/壳纳米线阵列碳布电极的非对称超级电容器性能研究[J]. 材料工程, 2019, 47(11): 115-122.
YAN Hui-jun, BAI Jian-wei, WANG Yu, ZHOU Hong-xia, JING Xiao-yan, WANG Jun, BAI Xue-feng. High performance MnO2@Ni(OH)2 core/shell structure nanowire arrays supported on carbon cloth as advanced electrodes for asymmetric supercapacitors. Journal of Materials Engineering, 2019, 47(11): 115-122.
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