Issue 33, 2020

Cobalt-based heterogeneous catalysts in an electrolyzer system for sustainable energy storage

Abstract

Nowadays, the production of hydrogen and oxygen focuses on renewable energy techniques and sustainable energy storage. A substantial challenge is to extend low-cost electrocatalysts consisting of earth-abundant resources, prepared by straightforward approaches that display high intrinsic activity compared to noble metals. The expansion of bifunctional catalysts in alkaline electrolytes for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) has become very crucial in recent times. Herein, the recent progress in cobalt-based HER–OER electrocatalysts has been are brushed up and numerous bifunctional cobalt-based catalysts such as cobalt-oxides, phosphides, sulfides, selenides, nitrides, borides, carbides, perovskites, and MOF-based cobalt analogs have been investigated in detail. Specifically, much more attention has been paid to their structural variation, bifunctional activity, overpotential of the overall system, and stability. Cobalt-based catalysts with lower cell voltage, remarkable durability, and unique electronic structures, offer a new perspective in energy-related fields. In recent years, cobalt-based analogs with diagnostic facilities have been introduced due to their electronic structures, tunable d band structures, and tailorable active sites. This perspective also elucidates the present issues, promising ideas, and future forecasts for cobalt-based catalysts. The critical aspects of cobalt-based catalysts and the numerous opportunities, as discussed at the end, can possibly enrich the sustainable energy field.

Graphical abstract: Cobalt-based heterogeneous catalysts in an electrolyzer system for sustainable energy storage

Article information

Article type
Perspective
Submitted
21 Apr. 2020
Accepted
22 Jūn. 2020
First published
23 Jūn. 2020

Dalton Trans., 2020,49, 11430-11450

Cobalt-based heterogeneous catalysts in an electrolyzer system for sustainable energy storage

A. Maiti, Dalton Trans., 2020, 49, 11430 DOI: 10.1039/D0DT01469A

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