Engineering Robust Triazine Crosslinked and Pyridine Capped Anion Exchange Membrane for Advanced Water Electrolysis

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 14, 2024

Abstract Exploring high‐performance anion exchange membranes (AEM) for water electrolyzers (AEMWEs) is significant green hydrogen production. However, the current AEMWEs are restricted by poor mechanical strength and low OH − conductivity of AEMs, leading to working stability density. Here, we develop a robust AEM with polybiphenylpiperidium network combining crosslinking triazine capping pyridine advanced AEMWEs. The exhibits an excellent (79.4 MPa), swelling ratio (19.2 %), persistent alkali (≈5,000 hours) high (247.2 mS cm −1 ) which achieves state‐of‐the‐art AEMs. Importantly, when applied in AEMWEs, corresponding electrolyzer equipped commercial nickel iron molybdenum catalysts obtained density up 3.0 A −2 at 2 V could be stably operated ~430 h 1.6 , exceeds most Our results suggest that can effectively improve overall performance

Language: Английский

Anion-Exchange Membranes’ Characteristics and Catalysts for Alkaline Anion-Exchange Membrane Fuel Cells

Membranes, Journal Year: 2024, Volume and Issue: 14(12), P. 246 - 246

Published: Nov. 22, 2024

This work aims at the effects of anion-exchange membranes (AEMs) and ionomer binders on catalyst electrodes for membrane fuel cells (AEMFCs). In experiments, four metal catalysts (nano-grade Pt, PtRu, PdNi Ag), AEMs (aQAPS-S8, AT-1, X37-50T X37-50RT) two alkaline ionomers (aQAPS-S14 XB-7) were used. They verified through several technical parameters examination cell performance comparison optimal selection AMEs. The bimetallic nanoparticles (PdNi/C) loaded with Vulcan XC-72R carbon black used as anode by using wet impregnation method, Ag (Ag/C) cathode. It was found that power density current X37-50RT are higher than other three membranes. Also, XB-7 had better aQAPS-S14. efficiency improved 32%, 155% 27%, respectively, when compared to same PdNi/C, Ag/C Pt/C. results consistent ion conductivity measurements, which showed is highest among them. values hydroxide ions (OH

Language: Английский

High performance anion exchange membrane containing large, rigid branching structural unit for fuel cell and electrodialysis applications

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: unknown, P. 123552 - 123552

Published: Nov. 1, 2024

Language: Английский