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| Main Authors: | , , , , , , , , , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2026
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| Subjects: | |
| Online Access: | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.70656 |
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Table of Contents:
- High‐Performance and Scalable Anion Exchange Membranes Based on Poly(vinyl alcohol) for Water Electrolysis Cuiwen Deng Minhao Wang Quan Yang Xinjie Zhang Zhongshan Feng Yangrun Cao Peiwen Yang Yanyun Jin Xiaorong Zhou Li Xiao Juanjuan Han Lin Zhuang ChemSusChem High‐performance, solution‐cast linear anion exchange membranes (AEMs) were fabricated by grafting N 1 ,N 1 ,N 1 ,N 7 ,N 7 ,N 7 ‐hexamethyl‐4‐oxoheptane‐1,7‐diammonium chloride (HMOHBA) and trifluoromethylbenzaldehyde (TFBA) onto a high‐MW poly(vinyl alcohol) (PVA) backbone via acetal/ketal reactions. Optimizing alkyl quaternary ammonium to fluorinated hydrophobic phenyl ratios yielded HMOHBA80‐TFBA20‐PVA with exceptional properties: 115.9 mS cm −1 ionic conductivity in water at 80°C; dry‐state tensile strength of 58.1 MPa (7.9% elongation); wet‐state 29.1 MPa strength with 245.5% elongation. After 1440 h in 1 M KOH at 80°C, the membrane retained 90.4% wet strength, showed 10.5% mass loss, and maintained 90.4% conductivity. In water electrolysis (1 M KOH, 80°C), it achieved 2.05 A cm −2 at 2.0 V. During 100 hr durability testing at 1 A cm −2 , cell voltage rose minimally from 1.84 to 1.85 V over the final 70 h. This work presents a novel strategy for commercially viable AEMs based on flexible polymer chains. 10.1002/cssc.70656 http://onlinelibrary.wiley.com/termsAndConditions#vor