Cross-linked polyelectrolyte for direct methanol fuel cells applications based on a novel sulfonated cross-linker

• Published in: Journal of power sources Vol. 255; pp. 101 - 107
• Main Authors: Li, Mingyu, Zhang, Gang, Xu, Shuai, Zhao, Chengji, Han, Miaomiao, Zhang, Liyuan, Jiang, Hao, Liu, Zhongguo, Na, Hui
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.06.2014; Elsevier
• Subjects: Applied sciences; Crosslinking; Direct energy conversion and energy accumulation; Direct methanol fuel cells; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Energy; Energy. Thermal use of fuels; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; Fuel cells; Mechanical properties; Membranes; Methyl alcohol; Polyelectrolytes; Proton exchange membrane; Sulfonated cross-linker; Sulfonated poly(ether ether ketone); Sulfonic acid; Trimers; Sulfonated cross-linker; Direct methanol fuel cells; Proton exchange membrane; Sulfonated poly(ether ether ketone); Polyetheretherketone; Alcohol fuel cells; Ether copolymer; Crosslinking; Crosslink agent; Primary alcohol; Ketone copolymer; Sulfonate copolymer; Crosslinked copolymer; Polyelectrolyte; Sulfonate polymer; Cation exchange membrane; Application; Proton exchange; Methanol

A novel type of cross-linked proton exchange membrane of lower methanol permeation and high proton conductivity is prepared, based on a newly synthesized sulfonated cross-linker: carboxyl terminated benzimidazole trimer bearing sulfonic acid groups (s-BI). Compared to membranes cross-linked with non...