This study introduces a highly efficient and robust bifunctional water electrolysis catalyst composed of perovskite oxides (La0.5Sr0.5CoO3-δ, LSC) and potassium ion-bonded MoSe₂ (K-MoSe₂). The multidirectional charge transfer within the heterostructure enhances the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) kinetics, surpassing the performance of the Pt/C||IrO₂ couple. The catalyst exhibits remarkable stability over 2,500 h under a high current density of 100 mA cm⁻².
Publisher
Nature Communications
Published On
Jul 29, 2021
Authors
Nam Khen Oh, Jihyung Seo, Sangjin Lee, Hyung-Jin Kim, Ungsoo Kim, Junghyun Lee, Young-Kyu Han, Hyesung Park
Tags
bifunctional catalyst
water electrolysis
MoSe₂
perovskite oxides
hydrogen evolution
oxygen evolution
energy efficiency
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