Amphoteric Metal Ion‐Coordinated Chitosan Membranes for Efficient Hydroxide Ion Transport DOI
Jikang Wang, Jiaxing Zhang,

Jinghui Wang

et al.

Chemistry - An Asian Journal, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Hydroxide exchange membranes (HEMs) have attracted extensive attention in energy-related fields, such as fuel cells and water electrolysis, primarily due to their suitability for alkaline environments. However, the practical application of is hindered significantly by limited conductivity. In this study, a series amphoteric metal ion-coordinated chitosan (CTS-AM) with enhanced hydroxide ion conductivity are reported. The CTS-AM prepared using simple soaking-drying method, exhibiting excellent mechanical strength thermal stability strong coordination bonds between ions chains. To best our knowledge, Zn2+ coordinated membrane achieved highest-ever reported 82.0 ± 5.4 mS cm-1 at 25 °C 100% RH, value increasing 301.0 6.7 operating temperature (80 °C) RH. Through combined structural analysis theoretical calculations, we propose that formation nanochannels lowered barrier electron transfer responsible high conductivities membranes. This study presents viable approach design fabrication high-performance HEMs energy storage devices other applications.

Language: Английский

Amphoteric Metal Ion‐Coordinated Chitosan Membranes for Efficient Hydroxide Ion Transport DOI
Jikang Wang, Jiaxing Zhang,

Jinghui Wang

et al.

Chemistry - An Asian Journal, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Hydroxide exchange membranes (HEMs) have attracted extensive attention in energy-related fields, such as fuel cells and water electrolysis, primarily due to their suitability for alkaline environments. However, the practical application of is hindered significantly by limited conductivity. In this study, a series amphoteric metal ion-coordinated chitosan (CTS-AM) with enhanced hydroxide ion conductivity are reported. The CTS-AM prepared using simple soaking-drying method, exhibiting excellent mechanical strength thermal stability strong coordination bonds between ions chains. To best our knowledge, Zn2+ coordinated membrane achieved highest-ever reported 82.0 ± 5.4 mS cm-1 at 25 °C 100% RH, value increasing 301.0 6.7 operating temperature (80 °C) RH. Through combined structural analysis theoretical calculations, we propose that formation nanochannels lowered barrier electron transfer responsible high conductivities membranes. This study presents viable approach design fabrication high-performance HEMs energy storage devices other applications.

Language: Английский

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