In order to improve the property of sulfonated poly(pathalazinone ether ketone)(SPPEK)membrane of high sulfonation degree,proton conductor zirconium tricarboxybutylphosphonate[Zr(PBTC)]was used and incorporated into S...In order to improve the property of sulfonated poly(pathalazinone ether ketone)(SPPEK)membrane of high sulfonation degree,proton conductor zirconium tricarboxybutylphosphonate[Zr(PBTC)]was used and incorporated into SPPEK to prepare Zr(PBTC)/SPPEK composite membranes for direct methanol fuel cell(DMFC).The results showed that the additive could reduce the water swelling and methanol permeability of membranes efficiently without sacrificing its conductivity.DMFC single cell performance demonstrated that the 30%(mass)Zr(PBTC)/SPPEK composite membrane was better than the pristine SPPEK membrane for its reduced swelling and consequently improved dimensional stability.展开更多
A Nafion 117 complex membrane with low Pd content was prepared. It was found that at room temperature the diffusivity of methanol through this membrane was reduced to one fifth of that through bare Nafion 117 membrane...A Nafion 117 complex membrane with low Pd content was prepared. It was found that at room temperature the diffusivity of methanol through this membrane was reduced to one fifth of that through bare Nafion 117 membrane . The proton conductivity of the modified membrane was also increased, significantly improving the discharge performance of the direct methanol fuel cell(DMFC).展开更多
文摘In order to improve the property of sulfonated poly(pathalazinone ether ketone)(SPPEK)membrane of high sulfonation degree,proton conductor zirconium tricarboxybutylphosphonate[Zr(PBTC)]was used and incorporated into SPPEK to prepare Zr(PBTC)/SPPEK composite membranes for direct methanol fuel cell(DMFC).The results showed that the additive could reduce the water swelling and methanol permeability of membranes efficiently without sacrificing its conductivity.DMFC single cell performance demonstrated that the 30%(mass)Zr(PBTC)/SPPEK composite membrane was better than the pristine SPPEK membrane for its reduced swelling and consequently improved dimensional stability.
文摘A Nafion 117 complex membrane with low Pd content was prepared. It was found that at room temperature the diffusivity of methanol through this membrane was reduced to one fifth of that through bare Nafion 117 membrane . The proton conductivity of the modified membrane was also increased, significantly improving the discharge performance of the direct methanol fuel cell(DMFC).
