Proton Exchange Membrane Water Splitting: Advances in Electrode Structure and Mass‐Charge Transport Optimization

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract Proton exchange membrane water electrolysis (PEMWE) represents a promising technology for renewable hydrogen production. However, the large‐scale commercialization of PEMWE faces challenges due to need acid oxygen evolution reaction (OER) catalysts with long‐term stability and corrosion‐resistant electrode assemblies (MEA). This review thoroughly examines deactivation mechanisms acidic OER crucial factors affecting assembly instability in complex environments, including catalyst degradation, dynamic behavior at MEA triple‐phase boundary, equipment failures. Targeted solutions are proposed, improvements, optimized designs, operational strategies. Finally, highlights perspectives on strict activity/stability evaluation standards, situ/operando characteristics, practical electrolyzer optimization. These insights emphasize interrelationship between catalysts, MEAs, activity, stability, offering new guidance accelerating systems.

Language: Английский

Facile Reconstruction of Se-Regulated NiMo Nanorods for Efficient Anion Exchange Membrane Water Electrolysis

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Developing platinum group metal (PGM)-free electrodes with high efficiency and stability is the ultimate goal for cost-effective anion exchange membrane water electrolysis (AEMWE), while it poses a significant challenge to PGM-free catalysts. Here, we present reconstructed NiMoSex (r-NiMoSex) nanorods as highly efficient catalysts oxygen evolution reaction (OER), in which Se can induce fast structural reconstruction, thereby creating flexible surface. This approach constructs successive ion channels mass transfer, thus significantly facilitating OER performance. Consequently, r-NiMoSex-based AEMWE enables an exceptional current density of 3 A cm–2 at 2.05 V, be stably run 1 1.70 V 190 h low attenuation rate 48.1 μV h–1, surpassing most previously reported More importantly, r-NiMoSex maintain stable performance after almost half-year placement. strategy contributes developing next-generation durable green hydrogen production.

Language: Английский

Toward a molecular-scale picture of water electrolysis: mechanistic insights, fundamental kinetics and electrocatalyst dynamic evolution

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 536, P. 216651 - 216651

Published: April 6, 2025

Language: Английский