Nickel cobaltite nanoneedle/porous graphene nanosheets network nanocomposite electrodes with ultra-high specific capacitance for energy storage applications

Chih Chieh Yang, Chia Hong Lee, Tseung Yuen Tseng*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Nickel cobaltite has become a popular energy storage material in recent years for high performance energy storage devices because of its low lost, high electronic conductivity, high electrochemical activity and environmental benignity. Nickel cobaltite (NCO)/porous graphene nanosheets network (PG) composites were synthesized via the two-steps hydrothermal method to enhance electrochemical properties in this study. The NCO/PG composite electrode demonstrated high specific capacitance of 3965 F g-1 at the current density of 1 A g-1 compared with the value of NCO that capacitance is 644 F g-1, and it maintained the 72% of the original capacitance after 3,000 charge-discharge cycles. It showed the maximum energy density of 46.3 Wh kg-1 and maximum power density of 1450 W kg-1. The NCO/GO composite has high potential as a psudocapacitance material for energy storage devices.

Original languageEnglish
Title of host publication7th Asia Conference on Mechanical and Materials Engineering
EditorsOmar S. Es-Said
PublisherTrans Tech Publications Ltd
Pages127-132
Number of pages6
ISBN (Print)9783035716207
DOIs
StatePublished - Jan 2020
Event7th Asia Conference on Mechanical and Materials Engineering, ACMME 2019 - Tokyo, Japan
Duration: 14 Jun 201917 Jun 2019

Publication series

NameMaterials Science Forum
Volume975 MSF
ISSN (Print)0255-5476

Conference

Conference7th Asia Conference on Mechanical and Materials Engineering, ACMME 2019
CountryJapan
CityTokyo
Period14/06/1917/06/19

Keywords

  • Hydrothermal process
  • Porous graphene
  • Pseudocapacitor
  • Specific capacitance

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