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

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

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  1. 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

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