Premium
Preparation of MnCo 2 O 4 @Ni(OH) 2 Core–Shell Flowers for Asymmetric Supercapacitor Materials with Ultrahigh Specific Capacitance
Author(s) -
Zhao Yan,
Hu Linfeng,
Zhao Shuyan,
Wu Limin
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201600494
Subject(s) - supercapacitor , materials science , capacitance , anode , power density , cathode , electrode , nanotechnology , core (optical fiber) , energy storage , chemical engineering , optoelectronics , composite material , power (physics) , electrical engineering , chemistry , physics , quantum mechanics , engineering
Supercapacitors have attracted much interest in the past decades owing to their important applications, but most of them are focused on solitary or simple metal oxides. Here, a novel supercapacitor electrode composed of multicomponent MnCo 2 O 4 @Ni(OH) 2 belt‐based core–shell nanoflowers is reported by a facile and cost‐effective method. This hybrid electrode exhibits a significantly enhanced specific capacitance. An asymmetric supercapacitor based on this unique hybrid nanoflowers as anode and an activated carbon film as cathode demonstrates high energy density, high power density, and long cycling lifespan.