novel ceramic organic ionomers craig p taylor colorado school of mines dmr 0820518 n.
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novel ceramic organic ionomers craig p taylor colorado school of mines dmr 0820518

Phosphonic acid based materials have generated substantial interest for PEM fuel cells, but up until now have all shown disappointing proton conductivities. We have produced a novel zirconium vinyl phosphonate/vinyl phosphonic acid copolymer that exceeds the proton conductivity of all other phosphonic acid based polymers. Pulsed gradient NMR experiments have shown proton transport proceeds through a unique mechanism involving the rearrangement of the Zr-O bonding. This structural mechanism for proton diffusion requires little or no water which enables high proton conductivity, c.a. 50 mS cm-1 at 50% RH.

Novel Ceramic/Organic IonomersCraig P. Taylor, Colorado School of Mines, DMR 0820518