Premium
Hierarchical Ni(OH) 2 ‐MnO 2 Array as Supercapacitor Electrode with High Capacity
Author(s) -
Li Jiangwei,
Wei Chengbo,
Sun Yanfang,
Liu Qingyun,
Zhang Xiao,
Guo Jinxue
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201801470
Subject(s) - supercapacitor , nanosheet , materials science , capacitance , electrode , capacitive sensing , nanotechnology , nanowire , specific surface area , optoelectronics , nickel , chemical engineering , electrical engineering , metallurgy , biochemistry , chemistry , engineering , catalysis
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.