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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. (author) / Ponomarev, Iv. I. (author) / Volkova, Yu. A. (author) / Ponomarev, I. I. (author) / Yaroslavtsev, A. B. (author)
Petroleum Chemistry ; 58 ; 958-964
2018-10-12
7 pages
Article (Journal)
Electronic Resource
English
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