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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.3
- 수록면
- 173 - 182 (10page)
- DOI
- https://doi.org/10.1007/s13391-023-00476-7
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For the heterogeneous alloy catalysts of water electrolysis, it has been reported that conductivity can be improved throughstructural modifi cations by introducing other elements like chalcogens. Transition metal sulfi des can induce numerous latticedefects due to their unique interface formation, thereby promoting abundant active sites and facilitating electron/ionmovement. In this study, we report the enhanced electrochemical activity of NiFeS formed on nickel foam (NiFeS@NF)for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) during the water electrolysis, especially, theseawater electrolysis. NiFeS@NF synthesized through a one-step electrochemical deposition had an amorphous-like highlyporous structure with the aggregates of spherical nanoparticles attached to nickel foam. Compared to NiFe@NF, NiFeS@NF catalysts demonstrated a reduced overpotential by ~32 mV and ~96 mV for OER and HER, respectively, at 100 mA cm −2and secured electrochemical stability over 24 h. Moreover, bifunctional seawater electrolysis using NiFeS@NF as both electrodesdemonstrated the reduced overpotential by ~80 mV with durability over time. This facile synthesis method for aniondoping and the enhanced and selective electrolysis of seawater without producing Cl 2 gas holds promise for the creation ofhigh-performance electrocatalysts applicable in a wide range of hydrogen energy-related fi elds.
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