Authors
Yu Zhou, Min Ju, Kaining Shen, Chenxi Xu, Mei Hong, Shihe Yang
Published in
ACS applied materials & interfaces. Oct 13, 2026. Epub Oct 13, 2026.
Abstract
Green hydrogen production from seawater electrolysis offers a promising route to harness intermittent renewable energy, particularly in resource-rich coastal regions. However, Cl- in seawater triggers parasitic side reactions and corrosion, which degrade both the activity and durability of electrocatalysts and thus hinder the practical deployment of this technology. Here, a hard Lewis acid overlayer was constructed on the catalyst surface to promote water dissociation and accumulate in-situ generated OH- in the vicinity of the active sites. Such locally generated alkalinity suppresses chlorine chemistry at the catalyst surface. Moreover, the strong affinity between the Lewis acid layer and OH- limits the capture of hydroxide by Mg2+ and Ca2+ in bulk seawater, thereby alleviating precipitate formation. The Cr2O3(30)-NiMoO4(10) catalyst exhibits exceptional hydrogen evolution reaction and oxygen evolution reaction activity, with overpotentials of 56 mV and 220 mV at 10 mA cm-2. The overall water splitting based on the catalysts for both electrodes reaches a low voltage of 1.72 [email protected] A cm-2.
PMID:
42863094
Bibliographic data and abstract were imported from PubMed on 13 Oct 2026.
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