Hybrid Co(OH)2/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

13 Scopus Citations
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Author(s)

  • Cheng Liang
  • Leilei Chen
  • Dajun Wu
  • Chi Zhang
  • Shaohui Xu
  • Yiping Zhu
  • Dayuan Xiong
  • Pingxiong Yang
  • Lianwei Wang

Detail(s)

Original languageEnglish
Pages (from-to)40-43
Journal / PublicationMaterials Letters
Volume172
Early online date26 Feb 2016
Publication statusPublished - 1 Jun 2016

Abstract

Nano-scale Co(OH)2/NG (nano-graphene: NG) composites serving as the active materials of miniature supercapacitors are deposited on macroporous electrically conductive network (MECN). The Co(OH)2/NG composite in the channels largely contribute to the capacitance. The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a 2 M KOH solution. The Co(OH)2/NG composite exhibits a stable capacitance of 3.522 F/cm2 (880.5 F/g) and retention ratio is 99% after 5000 cycles demonstrating the stability and durability. The Co(OH)2/NG/MECN can be scanned faster than Co(OH)2/MECN in CV because of the higher conductivity.

Research Area(s)

  • Carbon materials, Co(OH)2, Composite materials, Deposition, MECN, Supercapacitor

Citation Format(s)

Hybrid Co(OH)2/nano-graphene/Ni nano-composites on silicon microchannel plates for miniature supercapacitors. / Liang, Cheng; Chen, Leilei; Wu, Dajun; Zhang, Chi; Xu, Shaohui; Zhu, Yiping; Xiong, Dayuan; Yang, Pingxiong; Wang, Lianwei; Chu, Paul K.

In: Materials Letters, Vol. 172, 01.06.2016, p. 40-43.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review