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Growth of Hierarchical 3D Mesoporous NiSi x /NiCo 2 O 4 Core/Shell Heterostructures on Nickel Foam for Lithium‐Ion Batteries
Author(s) -
Zhang Qiaobao,
Chen Huixin,
Wang Jiexi,
Xu Daguo,
Li Xinhai,
Yang Yong,
Zhang Kaili
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201402039
Subject(s) - materials science , mesoporous material , fabrication , nanowire , nanotechnology , lithium (medication) , chemical vapor deposition , electrode , nickel , heterojunction , electrochemistry , nanostructure , electrical conductor , chemical engineering , optoelectronics , composite material , catalysis , chemistry , medicine , biochemistry , alternative medicine , pathology , endocrinology , engineering , metallurgy
We demonstrate the facile and well‐controlled design and fabrication of heterostructured and hierarchical 3D mesoporous NiSi x /NiCo 2 O 4 core/shell nanowire arrays on nickel foam through a facile chemical vapor deposition (CVD) technique combined with a simple but powerful chemical bath deposition (CBD) technique. The smart hybridization of NiCo 2 O 4 and NiSi x nanostructures results in an intriguing mesoporous hierarchical core/shell nanowire‐array architecture. The nanowire arrays demonstrate enhanced electrochemical performance as binder‐ and conductive‐agent‐free electrodes for lithium ion batteries (LIBs) with excellent capacity retention and high rate capability on cycling. The electrodes can maintain a high reversible capacity of 1693 mA h g −1 after 50 cycles at 200 mA g −1 . Given the outstanding performance and simple, efficient, cost‐effective fabrication, we believe that these 3D NiSi x /NiCo 2 O 4 core/shell heterostructured arrays have great potential application in high‐performance LIBs.