Title

Facile Synthesis of Ni₃B/RGO Nanocomposite as an Efficient Electrocatalyst for the Oxygen Evolution Reaction in Alkaline Media

Abstract

Alkaline water electrolysis yielding H2 and O2 is a very promising fuel cell technology for sustainable energy generation. Emphasis has been placed on the development of efficient electrocatalysts based on earth-abundant elements for the kinetically deterred oxygen evolution reaction (OER). Nickel boride nanostructures exhibit enhanced OER catalytic activity, achieving 10 mA cm-2 at an overpotential of 320 mV. The activity can be greatly improved by incorporating Ni3B in an electrically conducting reduced graphene oxide matrix, which reduces the overpotential further to 290 mV at 10 mA cm-2, and has a small Tafel slope. The catalytic activity of the Ni3B-rGO nanocomposite shows considerable stability under long-term operating conditions.

Department(s)

Chemistry

Keywords and Phrases

Nickel borides; OER electrocatalysts; Reduced graphene oxide; Synergistic effect; Water splitting

International Standard Serial Number (ISSN)

1388-2481

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 Elsevier B.V., All rights reserved.

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