Fabrication of CoWO4@NiWO4 nanocomposites with good supercapacitve performances. (20th August 2015)

• Record Type: Journal Article
• Authors: Xu, Xiaoyang; Gao, Jianping; Huang, Guanbo; Qiu, Haixia; Wang, Zeyu; Wu, Jinze; Pan, Zeng; Xing, Fubao
• Is Part Of: Electrochimica acta. Volume 174(2015)
• Page Start: 837
• Page End: 845
• Publication Date: 2015-08-20
• Subjects: nanocomposite -- pseudocapacitive -- capacity -- stability -- co-precipitation; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.04.159
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: CoWO4, NiWO4 and CoWO4 @NiWO4 nanocomposites were prepared by a facile chemical co-precipitation method and their supercapacitive performances were compared. The particle-like CoWO4 has good stability and the flake-like NiWO4 exhibits a high capacity. The CoWO4 @NiWO4 nanocomposite inherited structural characteristics from both CoWO4 and NiWO4, with the CoWO4 particles growing on the surface of the NiWO4 flakes. In addition, the CoWO4 @NiWO4 nanocomposite combines the high capacity of NiWO4 and the excellent stability of CoWO4 and shows the Faradaic redox properties with a higher capacity and a better stability than pure metal-WO4 materials.