An Ionomer-Free Gapless Catalyst-Bridging Membrane Electrode Assembly for High-Performance Pure Water-Fed Anion Exchange Membrane Electrolyzer

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 08. Okt., Seite e09805
1. Verfasser: Zhang, Tianhao (VerfasserIn)
Weitere Verfasser: Lin, Shu-An, Liu, Heming, Dong, Yuxiao, Kang, Xin, Hu, Shuqi, Li, Shanlin, Zhang, Zhiyuan, Yu, Qiangmin, Liu, Bilu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article AEMWE fluctuating energy supply gapless catalyst‐bridging MEA hydrogen interface pure water
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520 |a Anion exchange membrane water electrolyzers (AEMWEs) are promising for hydrogen production due to low cost and high product purity. However, the performance of AEMWEs fed by pure water is unsatisfactory because of high ohmic resistance and sluggish reaction kinetics in the membrane electrode assembly (MEA). Here, an efficient ionomer-free gapless catalyst-bridging MEA (GCB-MEA) is developed for high-performance AEMWEs by confined directional deposition of the catalyst layer. The ionomer-free catalyst layer bridges the anion exchange membrane and the gas diffusion layer, creating robust interfaces at its both sides. Compared to conventional MEAs, the GCB-MEA exhibits more active sites, lower contact resistance, faster mass transfer kinetics, and stronger interfacial binding. The GCB-MEA-based AEMWE shows an energy conversion efficiency of 85.7% at 1 A cm-2 and a voltage degradation rate of 65 µV h-1 at 0.5 A cm-2 after 1 000 h, being the lowest reported to date for pure water-fed AEMWEs. Moreover, the electrolyzer exhibits stable responses under the fluctuating solar energy supply conditions. This work provides an efficient strategy to prepare MEAs for high-performance hydrogen production, especially under pure water condition 
650 4 |a Journal Article 
650 4 |a AEMWE 
650 4 |a fluctuating energy supply 
650 4 |a gapless catalyst‐bridging MEA 
650 4 |a hydrogen 
650 4 |a interface 
650 4 |a pure water 
700 1 |a Lin, Shu-An  |e verfasserin  |4 aut 
700 1 |a Liu, Heming  |e verfasserin  |4 aut 
700 1 |a Dong, Yuxiao  |e verfasserin  |4 aut 
700 1 |a Kang, Xin  |e verfasserin  |4 aut 
700 1 |a Hu, Shuqi  |e verfasserin  |4 aut 
700 1 |a Li, Shanlin  |e verfasserin  |4 aut 
700 1 |a Zhang, Zhiyuan  |e verfasserin  |4 aut 
700 1 |a Yu, Qiangmin  |e verfasserin  |4 aut 
700 1 |a Liu, Bilu  |e verfasserin  |4 aut 
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773 1 8 |g year:2025  |g day:08  |g month:10  |g pages:e09805 
856 4 0 |u http://dx.doi.org/10.1002/adma.202509805  |3 Volltext 
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