Constructing oxygen vacancies by doping Mo into spinel Co₃O₄ to trigger a fast oxide path mechanism for acidic oxygen evolution reaction

Abstract

The development of non-precious metal electrocatalysts for the acidic oxygen evolution reaction (OER) that are highly durable, cost-effective, and efficient is crucial to advancing the use of proton exchange membrane...

High-Entropy Oxides as Electrocatalysts for the Oxygen Evolution Reaction: A Mini Review

“…This enhancement is evidenced by the direct reaction intermediates, i.e., −O–O–, *–O–O, and *OH. Concurrently, the OPM is superior to the AEM because of the reduced increase in free energy and performs better than AEM on Ru/MnO 2 during OER. ,− …”

Engineering hierarchical snowflake-like multi-metal selenide catalysts anchored on Ni foam for high-efficiency and stable overall water splitting

“…21–23 For example, Xin Yue et al demonstrated that the addition of a few Mo heteroatoms (∼0.5 wt%) to Co 3 O 4 can enhance its activity and stability in the acidic OER. 24 This enhancement can be ascribed to the activation of lattice oxygen by the doping of Mo, leading to a well-defined etching process and oxygen vacancy generation. The obtained oxygen vacancies promote a rapid oxygen evolution reaction (OER) pathway, while the variable valence state of Mo contributes to its stability.…”

Tungstic acid integrated metal–organic frameworks for efficient oxygen evolution reaction

“…1–5 Developing efficient and low-cost oxygen evolution reaction (OER) catalysts is a major challenge due to the four-electron coupled process and higher energy barriers. 6 Elaborately designed electrocatalysts have been proved to reduce the overpotential and sluggish kinetics at the anode effectively. Transition metal oxide-based catalysts are known as the most active due to their intrinsic electronic structures and binding strength of oxygenated intermediates.…”