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- W4200328647 abstract "The catalyst for practical water electrolysis needs to maintain long-term stability and work effectively withstanding high-intensity gas evolution, which is extremely challenging. Heterostructure with an amorphous-crystalline interface has been reported recently to availably enhance the catalytic performance of materials at high output. Herein, a wet chemical etching method realizes the hierarchical amorphous/crystalline heterostructure [(WO2-Ni17W3)/NiFe(OH)x]. It induces modulated electronic structure and abundant active sites with chemical stability, resulting in extraordinary catalytic activity for hydrogen evolution reaction (η10 = 31 mV, η1000 = 258 mV), oxygen evolution reaction (η50 = 240 mV, η1,000 = 336 mV), and overall water splitting (1.54/1.84 V at 50/1,000 mA cm−2). Besides, it can maintain at 1,000 mA cm−2 stably for 120 h under simulated industrial condition (6.0 M KOH solution at 60 ℃) as a bifunctional catalyst. The coupled active phases and the in-situ formed heterojunction ensure an excellent performance at high current density. This strategy could be promoted to fabricate catalysts for practical water electrolysis." @default.
- W4200328647 created "2021-12-31" @default.
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- W4200328647 date "2022-03-01" @default.
- W4200328647 modified "2023-10-16" @default.
- W4200328647 title "Amorphous-crystalline heterostructure for simulated practical water splitting at high-current–density" @default.
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- W4200328647 doi "https://doi.org/10.1016/j.cej.2021.134247" @default.
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