材料科学
超级电容器
电极
化学工程
电化学
电容
电解质
储能
纳米技术
假电容
热液循环
作者
Jiangwei Li,Chengbo Wei,Yanfang Sun,Qingyun Liu,Xinqun Zhang,Jinxue Guo
标识
DOI:10.1002/admi.201801470
摘要
Abstract Nanoarray electrodes with highly capacitive materials and specific architectures are hopeful to realize advanced supercapacitor performance. The nickel foam (NF) supported hierarchical nanosheet array electrode is fabricated through a template route toward excellent capacitive supercapacitor. The hierarchical nanosheet array weaved with Ni(OH) 2 ‐MnO 2 nanowires provides multiple advantages for porous feature, high surface area, and fast charge transfer. The neighbored Ni(OH) 2 ‐MnO 2 supplies lattice fringes distortion as additional active sites as well as synergism, for improved capacitive performances. As expected, the Ni(OH) 2 ‐MnO 2 /NF electrode manifests high specific capacitance of 14.7 F cm −2 at 2.5 mA cm −2 and good cyclic stability, making it hopeful for highly capacitive supercapacitor application.
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