Novel Stable Co3O4-SnO2 Heterojunction Electrocatalysts with Low Oxygen Evolution Potential DOI Open Access

Binge Yan,

Wen Liu,

Youchen Sun

и другие.

Materials, Год журнала: 2025, Номер 18(8), С. 1869 - 1869

Опубликована: Апрель 19, 2025

Proton exchange membrane (PEM) water electrolysis offers a sustainable route for hydrogen production, yet the reliance on costly noble metal-based anodes hinders scalability. Tin dioxide (SnO2) emerges as promising alternative due to its acid stability, but high oxygen evolution potential (OEP) limits practical application in production via electrolysis. Here, we address this challenge by incorporating cobalt (Co) into SnO2 create heterojunction electrocatalyst. The optimized Co3O4-SnO2 catalyst with tin-to-cobalt mass ratio of 3:1 exhibits significantly reduced OEP (1.6 V vs. RHE) and an overpotential 186 mV at 10 mA cm-2 acidic media, outperforming undoped SnO2. Stability tests reveal lifespan exceeding 24 h 100 cm-2, threefold improvement over pure This work underscores electrocatalyst cost-effective, durable anode PEM electrolyzers.

Язык: Английский

Novel Stable Co3O4-SnO2 Heterojunction Electrocatalysts with Low Oxygen Evolution Potential DOI Open Access

Binge Yan,

Wen Liu,

Youchen Sun

и другие.

Materials, Год журнала: 2025, Номер 18(8), С. 1869 - 1869

Опубликована: Апрель 19, 2025

Proton exchange membrane (PEM) water electrolysis offers a sustainable route for hydrogen production, yet the reliance on costly noble metal-based anodes hinders scalability. Tin dioxide (SnO2) emerges as promising alternative due to its acid stability, but high oxygen evolution potential (OEP) limits practical application in production via electrolysis. Here, we address this challenge by incorporating cobalt (Co) into SnO2 create heterojunction electrocatalyst. The optimized Co3O4-SnO2 catalyst with tin-to-cobalt mass ratio of 3:1 exhibits significantly reduced OEP (1.6 V vs. RHE) and an overpotential 186 mV at 10 mA cm-2 acidic media, outperforming undoped SnO2. Stability tests reveal lifespan exceeding 24 h 100 cm-2, threefold improvement over pure This work underscores electrocatalyst cost-effective, durable anode PEM electrolyzers.

Язык: Английский

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