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H‐TiO 2 @MnO 2 //H‐TiO 2 @C Core–Shell Nanowires for High Performance and Flexible Asymmetric Supercapacitors
Author(s) -
Lu Xihong,
Yu Minghao,
Wang Gongming,
Zhai Teng,
Xie Shilei,
Ling Yichuan,
Tong Yexiang,
Li Yat
Publication year - 2013
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.201203410
Subject(s) - supercapacitor , materials science , nanowire , electrode , capacitance , shell (structure) , core (optical fiber) , nanotechnology , voltage , optoelectronics , composite material , electrical engineering , chemistry , engineering
A flexible solid‐state asymmetric supercapacitor device with H‐TiO 2 @MnO 2 core–shell NWs as the positive electrode and H‐TiO 2 @C core–shell NWs as the negative electrode is developed. This device operates in a 1.8 V voltage window and is able to deliver a high specific capacitance of 139.6 F g −1 and maximum volumetric energy density of 0.30 mWh cm −3 with excellent cycling performance and good flexibility.