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Cobalt Oxide–Tin Core–Shell Nanowire Arrays as High‐Performance Electrodes for Lithium‐Ion Batteries
Author(s) -
Wu Man,
Du Ning,
Wu Hao,
Liu Wei,
Chen Yifan,
Zhao Wenjia,
Yang Deren
Publication year - 2016
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201600194
Subject(s) - materials science , nanowire , tin , anode , lithium (medication) , electrode , cobalt , tin oxide , nanotechnology , layer (electronics) , chemical engineering , oxide , inorganic chemistry , metallurgy , chemistry , medicine , endocrinology , engineering
Both cobalt oxide and tin are electrochemically active materials, and can be integrated into hybrid core–shell nanowire structures that can participate in lithium‐ion insertion‐deinsertion process. We demonstrate the synthesis of cobalt oxide–tin (Co 3 O 4 –Sn) core–shell nanowire arrays by the hydrothermal synthesis of Co 3 O 4 nanowire arrays and subsequent deposition of the tin layer via a RF‐sputtering method. When used as anode materials in lithium‐ion batteries, the Co 3 O 4 –Sn core–shell nanowire electrodes show better cyclability and enhanced rate capacities compared to bare Co 3 O 4 electrodes. The improved performance can be attributed to the introduction of the tin layer, which improves the electrical conductivity and structural stability of the Co 3 O 4 nanowire arrays.