Fabrication and electrochemical capacitance of polyaniline/titanium nitride core-shell nanowire arrays

被引:41
作者
Xia, Chi [1 ,2 ]
Xie, Yibing [1 ,2 ]
Wang, Wei [1 ,2 ]
Du, Hongxiu [1 ,2 ]
机构
[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China
[2] Southeast Univ, Suzhou Res Inst, Suzhou 215123, Peoples R China
基金
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词
Titanium nitride; Polyaniline; Nanowire arrays; Supercapacitor; HIGH-PERFORMANCE; TIO2; NANOTUBES; SUPERCAPACITOR; ELECTRODES; TITANIA; NANOCOMPOSITES; NANORODS;
D O I
10.1016/j.synthmet.2014.03.018
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A novel polyaniline/titanium nitride (PANI/TiN) core-shell nanowire arrays (NWAs) have been fabricated on carbon fibers (CFs) substrate and applied as an electrode material of electrochemical supercapacitor. TiN NWAs were prepared via a seed-assisted hydrothermal process and then ammonia nitridation process. PANI/TiN core-shell NWAs were prepared by electrodepositing PAN! onto TiN NWAs. Scanning electron micrographs revealed that TiN NWAs consisted of bundle of small nanowires with a diameter of 10-30 nm and an average length of 1 pm. High-density TiN NWAs offered a high specific surface area for PANI coating layer. Electrochemical measurements showed that a very high specific capacitance of 1064 F g(-1) at a current density of 1 A g(-1) (based on the mass of PANI) was obtained for PANI/TiN core-shell NWAs. The specific capacitance of PANI/TiN core-shell NWAs could even achieve 787.5 Fg(-1) at a higher current density of 5 A g(-1) and still kept 95% capacity retention after 200 cycles. These results indicated that the PANI/TiN core-shell NWAs showed the promising application as supercapacitor electrode materials for energy storage. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:93 / 100
页数:8
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