Ultra‐Efficient Hydrogen Crossover Suppression Achieved by Precise Pt Hybridization in Thin Nafion Membranes for Water Electrolyzer DOI

Xuyang Xie,

Jingnan Song, Xiaoxuan Fan

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Abstract Reducing the thickness of proton exchange membranes (PEMs) is a highly effective strategy to enhance operational efficiency membrane water electrolyzer (PEMWE). However, this often leads hydrogen crossover, raising concerns about system stability. Perfluorosulfonic acid (PFSA)‐stabilized Pt nanoparticles (Pt NPs) are synthesized and introduced into fabricate PFSA bilayer membrane. Electron microscopy scattering analyses confirm precise localization NPs within hydrophilic domains without disturbing overall morphology. This doping enables on‐site scavenging diffusing across at an ultralow loading (0.002 mg cm −2 ). In contrast, conventional stabilizing matrix induces severe aggregation, restricting nanoparticle entry resulting in inefficient elimination even elevated loadings. Moreover, approach significantly enhances durability: crossover suppression remained stable after 500 h operation practical PEMWE device current densities 1.0 2.0 A·cm − 2 , confirming membrane's excellent durability.

Язык: Английский

Microporous poly(aryl piperidinium) hydroxide exchange membranes with multi-directional branched structure for high performance fuel cells DOI
Jian Gao, Jialin Zhao,

Shiyao Sun

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 137676 - 137676

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Ultra‐Efficient Hydrogen Crossover Suppression Achieved by Precise Pt Hybridization in Thin Nafion Membranes for Water Electrolyzer DOI

Xuyang Xie,

Jingnan Song, Xiaoxuan Fan

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 16, 2025

Abstract Reducing the thickness of proton exchange membranes (PEMs) is a highly effective strategy to enhance operational efficiency membrane water electrolyzer (PEMWE). However, this often leads hydrogen crossover, raising concerns about system stability. Perfluorosulfonic acid (PFSA)‐stabilized Pt nanoparticles (Pt NPs) are synthesized and introduced into fabricate PFSA bilayer membrane. Electron microscopy scattering analyses confirm precise localization NPs within hydrophilic domains without disturbing overall morphology. This doping enables on‐site scavenging diffusing across at an ultralow loading (0.002 mg cm −2 ). In contrast, conventional stabilizing matrix induces severe aggregation, restricting nanoparticle entry resulting in inefficient elimination even elevated loadings. Moreover, approach significantly enhances durability: crossover suppression remained stable after 500 h operation practical PEMWE device current densities 1.0 2.0 A·cm − 2 , confirming membrane's excellent durability.

Язык: Английский

Процитировано

0