Solvothermal synthesis of high-performance Ni-Co layered double hydroxide nanofoam electrode for electrochemical energy storage

Rajkumar Patel, Akbar I. Inamdar, Bo Hou, Seung Nam Cha, Abu Talha Ansari, Jayavant L. Gunjakar, Hyunsik Im, Hyungsang Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)2) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)2 electrode exhibits a high specific capacitance of 2710.2 F/g at a current density of 9.1 A/g, and a good capacity retention of ∼70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)2 electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector.

Original languageEnglish
Pages (from-to)501-506
Number of pages6
JournalCurrent Applied Physics
Volume17
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1

Bibliographical note

Funding Information:
The research was supported by the National research Foundation of Korea (2015M2A2A6A02045252, 2015R1D1A1A01058851, 2015R1D1A1A01060743, 2015R1A2A2A01004782 and 2016R1A6A1A03012877). H. Im acknowledges financial support from the Dongguk University research fund.

Publisher Copyright:
© 2017 Elsevier B.V.

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

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