All-solid-state hybrid supercapacitors based on ZnCo2O4 nanowire arrays and carbon nanorod electrode materials. (October 2017)

• Record Type: Journal Article
• Authors: Zhao, Jingxin; Li, Chaowei; Zhang, Qichong; Zhang, Jun; Wang, Xiaona; Sun, Juan; Wang, Juanjuan; Xie, Jixun; Lu, Conghua; Lu, Weibang; Yao, Yagang
• Is Part Of: Carbon. Volume 123(2017)
• Page Start: 676
• Page End: 682
• Publication Date: 2017-10
• Subjects: ZnCo2O4 -- Carbon nanorods -- Hybrid supercapacitor device -- Carbon nanotube film; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2017.08.022
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: A high-performance, all-solid-state hybrid supercapacitor (HSC) device was assembled successfully. The ZnCo2 O4 nanowire array (NA)/carbon nanotube film (CNTF) positive electrode materials and the assembled device possess areal specific capacitances of 1.019 F cm −2 and 158.08 mF cm −2, respectively. A supernal volume energy density of 49.5 mWh cm −3 was obtained when the voltage window increased to 1.5 V. Moreover, the assembled HSC device exhibited good cycling stability with 90.7% initial capacitance retention after 6000 cycles, and the coulombic efficiency remained near 100%. Graphical abstract: The assembled all-solid-state asymmetric supercapacitor device possess excellent cycle stability and supernal volume energy density.