Electrochemical performance of binder-free Ni(OH)2/RGO battery type electrode materials for supercapacitor

Yusuf Khan, Akanksha R. Urade, Amrita De Adhikari, Palash Chandra Maity, K. Ramesh, Shahid Bashir, Indranil Lahiri*, S. Ramesh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Ni(OH)2/reduced graphene oxide (RGO) core-shell hybrid nanostructure has been synthesized employing a facile and inexpensive chemical-precipitation technique. The synthesized core-shell nanostructures, comprising Ni(OH)2 at the core and RGO as shell, were then coated on commercially available Ni foam used as an electrode. Prepared Ni(OH)2/RGO nanospheres were analyzed by Raman analysis for structural information. In the Raman spectrum, the peaks at 1323 and 1612 cm−1 correspond to the D and G bands of RGO, respectively. The peaks at 468 and 335 cm−1 depict the characteristic bands of Ni(OH)2. The core-shell morphology of the hybrid was established from Transmission Electron Microscope (TEM) images. The lattice fringes are measured to be 0.33 nm for RGO layers and 0.22 nm for Ni(OH)2 core, which correspond to (002) plane of RGO and (101) plane of Ni(OH)2. For electrochemical studies, the as-prepared Ni(OH)2/RGO hybrid was used as a battery-type electrode in supercapacitor. The results indicate that the Ni(OH)2/RGO core-shell hybrid nanostructure exhibits a maximum specific capacity of 513.8 Cg−1 at 10 mV/s with a maximum energy density of 119.4 Whkg−1 at 1250 Wkg−1 power density.

Original languageEnglish (US)
Pages (from-to)725-733
Number of pages9
JournalInternational Journal of Green Energy
Issue number7
StatePublished - 2023

Bibliographical note

Funding Information:
This work was partially supported by Science and Engineering Research Board, India [grant number: EMR/2016/001282]. The authors acknowledge the characterization facilities of Institute Instrumentation Centre and Department of Metallurgical and Materials Engineering, IIT Roorkee.

Publisher Copyright:
© 2022 Taylor & Francis Group, LLC.


  • core-shell
  • Ni(OH)/RGO
  • specific capacity
  • Supercapacitor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment


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