FUEL 14 |
| Proton conducting properties of well-characterized, pure, and high molecular weight poly(vinylphosphonic acid) (PVPA) were investigated with regard to its use as the key constituent of PEMs. The proton conductivity of PVPA is influenced by the formation of phosphonic acid anhydrides to large extent. Magic angle solid state nuclear magnetic resonance (MAS-NMR) was suggested as a tool to detect and quantify the condensated phopshonic acid species for the first time.
|
|
Fuel Cell Technology: Polymer Electrolyte Membrane Fuel Cell Systems
8:25 AM-12:00 PM, Sunday, August 19, 2007 Boston Park Plaza -- Cambridge Rm, Oral
Division of Fuel Chemistry |