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Surface‐Charge‐Mediated Formation of H‐TiO 2 @Ni(OH) 2 Heterostructures for High‐Performance Supercapacitors
Author(s) -
Ke Qingqing,
Guan Cao,
Zhang Xiao,
Zheng Minrui,
Zhang YongWei,
Cai Yongqing,
Zhang Hua,
Wang John
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201604164
Subject(s) - materials science , heterojunction , nucleation , supercapacitor , nanowire , electrochemistry , nanotechnology , chemical engineering , shell (structure) , electrode , optoelectronics , chemistry , composite material , organic chemistry , engineering
An electrochemically favorable Ni(OH) 2 with porously hierarchical structure and ultrathin nanosheets in a core–shell structure H‐TiO 2 @Ni(OH) 2 is achieved through modulating the surface chemical activity of TiO 2 by hydrogenation, which creates a defect‐rich surface of TiO 2 , thereby facilitating the subsequent nucleation and growth of Ni(OH) 2 . These configuration‐tailored H‐TiO 2 @Ni(OH) 2 core–shell nanowires exhibit a superior electrochemical performance and good flexibility.