Advanced Nickel-Based Gas Diffusion Anode for Zero-Gap Anion-Exchange Membrane Water Electrolyzers DOI Creative Commons
I. V. Pushkareva, Zhixing Wu, Xianjie Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Electrolytic hydrogen production using abundant water and renewable electricity is a key step toward achieving carbon-neutral economy. Anion-exchange membrane electrolyzers (AEMWE) present an opportunity to enhance sustainability reduce the costs of green technology. This study focuses on reducing electrical losses in AEMWE by designing improved anode catalyst layer. The approach involves modifying nickel foam microporous ink. modification not only smooths prevent punctures during compression assembly but also enhances utilization mesoporous NiO (mesoNiO) process, namely, oxygen evolution reaction (OER). leverages mechanism where both mesoNiO powder layer participate OER, hosting NiOOH intermediate formed through surface oxidation. By optimization mass loading, design achieves balance between smooth membrane-electrode contact, reduced kinetic efficient ionic transport. As result, optimized reaches competitive current density 2.6 A cm-2 at cell voltage 2 V, comparable performance state-of-the-art proton-exchange electrolyzers. These findings highlight that fluorocarbon membrane-free, zero-gap with platinum-free anodes can deliver significant advancements promising encourages further research catalyst-free as next sustainable production.

Language: Английский

Advanced Nickel-Based Gas Diffusion Anode for Zero-Gap Anion-Exchange Membrane Water Electrolyzers DOI Creative Commons
I. V. Pushkareva, Zhixing Wu, Xianjie Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Electrolytic hydrogen production using abundant water and renewable electricity is a key step toward achieving carbon-neutral economy. Anion-exchange membrane electrolyzers (AEMWE) present an opportunity to enhance sustainability reduce the costs of green technology. This study focuses on reducing electrical losses in AEMWE by designing improved anode catalyst layer. The approach involves modifying nickel foam microporous ink. modification not only smooths prevent punctures during compression assembly but also enhances utilization mesoporous NiO (mesoNiO) process, namely, oxygen evolution reaction (OER). leverages mechanism where both mesoNiO powder layer participate OER, hosting NiOOH intermediate formed through surface oxidation. By optimization mass loading, design achieves balance between smooth membrane-electrode contact, reduced kinetic efficient ionic transport. As result, optimized reaches competitive current density 2.6 A cm-2 at cell voltage 2 V, comparable performance state-of-the-art proton-exchange electrolyzers. These findings highlight that fluorocarbon membrane-free, zero-gap with platinum-free anodes can deliver significant advancements promising encourages further research catalyst-free as next sustainable production.

Language: Английский

Citations

0