Issue 12, 2024

An enhanced electrocatalytic oxygen evolution reaction by the photothermal effect and its induced micro-electric field

Abstract

Promoting better thermodynamics and kinetics of electrocatalysts is key to achieving an efficient electrocatalytic oxygen evolution reaction (OER). Utilizing the photothermal effect and micro-electric field of electrocatalysts is a promising approach to promote the sluggish OER. Herein, to reveal the relationship of the photothermal effect and its induced micro-electric field with OER performance, NiSx coupled NiFe(OH)y on nickel foam (NiSx@NiFe(OH)y/NF) is synthesized and subjected to the OER under near-infrared (NIR) light. Owing to the photothermal effect and its induced micro-electric field, the OER performance of NiSx@NiFe(OH)y/NF is significantly enhanced. Compared with no NIR light irradiation, the overpotential at 50 mA cm−2 and the Tafel slope of NiSx@NiFe(OH)y/NF under NIR light irradiation were 234.1 mV and 38.0 mV dec−1, which were lower by 12.4 mV and 7.1 mV dec−1, and it exhibited stable operation at 1.6 V vs. RHE for 8 h with 99% activity maintained. This work presents a novel inspiration to understand the photothermal effect-enhanced electrocatalytic OER.

Graphical abstract: An enhanced electrocatalytic oxygen evolution reaction by the photothermal effect and its induced micro-electric field

Supplementary files

Article information

Article type
Paper
Submitted
12 Jan 2024
Accepted
20 Feb 2024
First published
20 Feb 2024

Nanoscale, 2024,16, 6278-6285

An enhanced electrocatalytic oxygen evolution reaction by the photothermal effect and its induced micro-electric field

F. Duan, Q. Zou, J. Li, X. Yuan, X. Cui, C. Jing, S. Tao, X. Wei, H. He and Y. Song, Nanoscale, 2024, 16, 6278 DOI: 10.1039/D4NR00170B

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