Designing Highly Conductive Anion Exchange Membranes: Tuning Domain Continuity with ABC Block Copolymer Self-Assembly DOI
Alexandra J. Macbeth, Danielle Markovich,

A. Taylor

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Anion exchange membranes (AEMs) play a critical role in clean energy devices, and optimizing their performance requires deeper understanding of morphology-performance relationships. This study investigates ABC triblock terpolymer AEMs to explore how domain continuity influences hydroxide conductivity, water uptake, dimensional stability. High molecular weight terpolymers were synthesized through the controlled vinyl-addition polymerization norbornene monomers functionalized with alkyl, benzyl, or bromobutyl substituents. Morphology was systematically varied across series without significantly changing ion capacity (IEC) polymer by adjusting alkyl/benzyl block length ratio. Solution-cast films exhibited either 2D-continuous lamellar 3D-co-continuous network phase morphologies, largely retained after cationic functionalization. domains demonstrated superior performance, including enhanced stability competitive conductivities up 84 mS/cm at 25 °C 131 80 °C. work highlights self-assembly can be leveraged investigate relationships achieve highly conductive, durable AEMs.

Language: Английский

Hydrophilic and Hydrophobic Dual-side-linked Poly(carbazole-butanedione) Anion Exchange Membranes for Water Electrolysis and Fuel Cells Applications DOI

Wenli Ma,

Lin Tian, Qingzhi Zhang

et al.

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 123840 - 123840

Published: Feb. 1, 2025

Language: Английский

Citations

0
Constructing main/side chain dual-cation poly(mequitazine-terphenyl piperidinium) anion exchange membranes for high-performance fuel cells DOI Creative Commons

Shiyao Sun,

Jialin Zhao,

Yijia Lei

et al.

Materials Reports Energy, Journal Year: 2025, Volume and Issue: unknown, P. 100333 - 100333

Published: May 1, 2025

Language: Английский

Citations

0
Multi‐arm Branched Poly(carbazole‐aryl piperidinium) Anion Exchange Membrane with High Conductivity and Good Alkaline Stability for Fuel Cells DOI Open Access
Huigang Zhang, Qiong Xiang, Xuedong Zhang

et al.

Chinese Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Comprehensive Summary The lack of anion exchange membranes (AEMs) with good conductivity and alkaline stability has been one the challenges for fuel cells. Introducing branched structure was a strategy to promote due bigger free volume polymer steric hindrance cation. Herein, series AEMs multiple arms (four six) were successfully prepared. Multi‐arm demonstrated obvious improvement because larger multi‐arm structures, respectively. Four‐arm B4‐QPPCTP‐5 exhibited best comprehensive performance, including high 242.2 mS·cm –1 , 2000 h hardly degradation, mechanical property >40 MPa. Single cell based on power output 1.2 W·cm –2 . This work provides effective theoretical guidance design preparation AEMs.

Language: Английский

Citations

0
Designing Highly Conductive Anion Exchange Membranes: Tuning Domain Continuity with ABC Block Copolymer Self-Assembly DOI
Alexandra J. Macbeth, Danielle Markovich,

A. Taylor

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Anion exchange membranes (AEMs) play a critical role in clean energy devices, and optimizing their performance requires deeper understanding of morphology-performance relationships. This study investigates ABC triblock terpolymer AEMs to explore how domain continuity influences hydroxide conductivity, water uptake, dimensional stability. High molecular weight terpolymers were synthesized through the controlled vinyl-addition polymerization norbornene monomers functionalized with alkyl, benzyl, or bromobutyl substituents. Morphology was systematically varied across series without significantly changing ion capacity (IEC) polymer by adjusting alkyl/benzyl block length ratio. Solution-cast films exhibited either 2D-continuous lamellar 3D-co-continuous network phase morphologies, largely retained after cationic functionalization. domains demonstrated superior performance, including enhanced stability competitive conductivities up 84 mS/cm at 25 °C 131 80 °C. work highlights self-assembly can be leveraged investigate relationships achieve highly conductive, durable AEMs.

Language: Английский

Citations

0