Promoting Surface Reconstruction of Low-Cost Stainless Steel Catalyst for Efficient Oxygen Evolution Reaction.
Chemistry
; 29(44): e202300741, 2023 Aug 04.
Article
en En
| MEDLINE
| ID: mdl-37195143
ABSTRACT
The development of cost-effective transition metal catalysts for oxygen evolution reaction (OER) is critical for the production of hydrogen fuel from water splitting. Low-cost and efficient stainless steel-based catalysts are expected to replace the scarce platinum group metals for large-scale energy applications. Here in this work, we report the conversion of commonly available inexpensive and easily accessible 434-L stainless steel (SS) into highly active and stable electrodes by corrosion and sulfuration strategies. The Nix Fe1-x S layer as a pre-catalyst and S-doped Nix Fe oxyhydroxides inâ
situ formed on the catalyst surface are the true active species for OER. The optimized 434-L stainless steel-based electrocatalyst exhibits a low overpotential of 298â
mV at 10â
mA cm-2 in 1.0â
M KOH with a small OER kinetics (the Tafel slope of 54.8â
mV dec-1 ) and good stability. This work reveals the 434-L alloy stainless steel with Fe and Cr as the main elements can be used as qualified OER catalysts by surface modification, along with a new mentality to solve the energy and resource waste problems.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Tipo de estudio:
Health_economic_evaluation
Idioma:
En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2023
Tipo del documento:
Article