Recasting Ni-foam into NiF2nanorod arrays via a hydrothermal process for hydrogen evolution reaction application

Nanasaheb M. Shinde, Siddheshwar D. Raut, Balaji G. Ghule, Krishna Chaitanya Gunturu, James J. Pak, Rajaram S. Mane

Research output: Contribution to journalArticlepeer-review

Abstract

A promising electrode for hydrogen evolution reaction (HER) has been prepared via a reduction process to form NiF2 nanorod arrays directly grown on a 3D nickel foam. We reveal NiF2@Ni nanorod arrays for a stable hydrogen evolution reaction (HER) application. The computational analysis for H2O, OH and H and experimentally in aqueous KOH endow considerable shift in Fermi levels for Ni (111) unlike for NiF2 (110) on account of an effective coalition of p-orbitals of fluorine and d-orbitals of Ni in NiF2, NiF2 under pinning the reduced overpotential of 172 mV at 10 mA cm-2 compared to Ni (242 mV) in same electrolyte. The electrocatalytic mechanism has been proposed using density functional theory (DFT) and is found in well accordance with the experimental findings of the present study. The preparation of self-grown porous nanostructured electrodes on the 3D nickel foam via a displacement reaction is possibly valuable for other metal halides for energy storage and conversion applications as these materials have inherently smaller overpotentials.

Original languageEnglish
Pages (from-to)6500-6505
Number of pages6
JournalDalton Transactions
Volume50
Issue number19
DOIs
Publication statusPublished - 2021 May 21

ASJC Scopus subject areas

  • Inorganic Chemistry

Fingerprint

Dive into the research topics of 'Recasting Ni-foam into NiF<sub>2</sub>nanorod arrays via a hydrothermal process for hydrogen evolution reaction application'. Together they form a unique fingerprint.

Cite this