GIST Scholar
College of Engineering
Department of Environment and Energy Engineering
1. Journal Articles
Novel approach to enhancing layered double hydroxide catalyst performance and stability through substrate structure control
- Type
- Article
- Citation
- Chemical Engineering Journal, v.496
- Issued Date
- 2024-09
- Abstract
- This study introduces an innovative method to boost the performance and stability of the oxygen evolution reaction(OER) by employing a nickel-catalyzed substrate(Ni-CS) featuring diversified porosity and a high density of hydroxyl groups on the surface, as an alternative to traditional commercial Ni foam. Significantly, the NiFe layered double hydroxide(LDH)@Ni-CS electrode achieved a breakthrough in current density, reaching 200 mA cm−2 at an overpotential of 300 mV. Additionally, this electrode displayed unparalleled long-term stability with a high current density of 2 A cm−2 for 800 h. The significant increase in durability can be ascribed to the distinctive formation owing to the cross-linked structure and entrapment of LDH within the pores of Ni-CS, which inhibits the release of Fe ions and ensures the stability performance. These observations highlight the critical influence of the substrate microstructure and composition on electrode efficacy, suggesting a novel direction for engineering sophisticated electrodes for alkaline water electrolysis. © 2024 Elsevier B.V.
- Publisher
- Elsevier B.V.
- ISSN
- 1385-8947
- Appears in Collections:
- Department of Environment and Energy Engineering > 1. Journal Articles
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