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Effect of Phosphorylation of Polybenzimidazole on Its Conductive Properties
Abstract The proton conductivity of phosphorylated polybenzimidazole PhEPBI-O-PhT has been examined. It has been shown that the acid-free membrane has intrinsic conductivity. A comparative study of the conductive properties of PhEPBI-O-PhT and the nonphosphorylated analogue PBI-O-FT has been conducted, and it has been found that the presence of grafted phosphonic groups effectively helps to reduce the concentration of phosphoric acid used for doping with a high conductivity being retained. It has been shown that the introduction of phosphonic groups leads to a decrease in hydrogen gas permeability by 23%. The samples were tested in a membrane electrode assembly.
Effect of Phosphorylation of Polybenzimidazole on Its Conductive Properties
Abstract The proton conductivity of phosphorylated polybenzimidazole PhEPBI-O-PhT has been examined. It has been shown that the acid-free membrane has intrinsic conductivity. A comparative study of the conductive properties of PhEPBI-O-PhT and the nonphosphorylated analogue PBI-O-FT has been conducted, and it has been found that the presence of grafted phosphonic groups effectively helps to reduce the concentration of phosphoric acid used for doping with a high conductivity being retained. It has been shown that the introduction of phosphonic groups leads to a decrease in hydrogen gas permeability by 23%. The samples were tested in a membrane electrode assembly.
Effect of Phosphorylation of Polybenzimidazole on Its Conductive Properties
Lysova, A. A. (Autor:in) / Ponomarev, Iv. I. (Autor:in) / Volkova, Yu. A. (Autor:in) / Ponomarev, I. I. (Autor:in) / Yaroslavtsev, A. B. (Autor:in)
Petroleum Chemistry ; 58 ; 958-964
12.10.2018
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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