A high-performance supercapacitor electrode material based on NiS/Ni3S4 composite. (1st March 2017)

• Record Type: Journal Article
• Authors: Gou, Jianxia; Xie, Shengli; Yang, Zhichao; Liu, Yaqing; Chen, Yinjuan; Liu, Yanru; Liu, Chenguang
• Is Part Of: Electrochimica acta. Volume 229(2017)
• Page Start: 299
• Page End: 305
• Publication Date: 2017-03-01
• Subjects: NiS/Ni3S4 composite -- Supercapacitor -- Particle size -- Phase composition -- Cycling stability; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.01.111
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: Phase composition and particle size in nickel sulfides are engineered. Effects of phase composition and particle size on supercapacitive property are identified. The optimal NiS/Ni3 S4 composite electrode shows enhanced circling stability. Abstract: In this work, nickel sulfides were prepared via a facile hydrothermal method. The particle size and phase composition were tuned by the reaction temperature. Phase-property relationship of NiS/Ni3 S4 was established through combining characterization analysis with electrochemical tests. With the favorable particle size and composition, the NiS/Ni3 S4 composite delivered preferable gravimetric capacity (194.4 mAh g −1 at 2 A g −1, and 133.1 mAh g −1 at 10 A g −1 ) and impressive circling stability (89.5 mAh g −1 at 10 A g −1 after 5000 cycles).