Structure and Properties of Polymer Electrolyte Membranes Containing Phosphonic Acids for Anhydrous Fuel Cells

Chem. Mater., 2012, 24 (1), pp 115–122
Structure and Properties of Polymer Electrolyte Membranes Containing Phosphonic Acids for Anhydrous Fuel Cells
Sung-Il Lee†, Kyung-Hwan Yoon†, Myeongsoo Song†, Huagen Peng‡, Kirt A. Page*‡, Christopher L. Soles‡, and Do Y. Yoon*†
dyyoon@snu.ac.kr
kirt.page@nist.gov
^† Department of Chemistry, Seoul National University, Seoul 151-747, Korea
^‡ Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
Abstract
Water-free, proton-conducting polymer electrolytes show promise because of their possible application as fuel cell membranes at intermediate temperatures.
Phosphonic acid groups are considered feasible anhydrous proton conducting moieties due to the high degree of proton self-dissociation arising from their intrinsic amphoteric character and high mobility of protonic charge carriers. Authors synthesized and characterized model, phosphonic acid-functionalized proton-conducting polymers, poly(vinylbenzyloxy-alkyl-phosphonic acid)s, for the purpose of exploring the relationship between molecular design, nanostructure, and performance characteristics.
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