文献类型：期刊文献

中文题名：Modified silicon carbide whisker reinforced polybenzimidazole used for high temperature proton exchange membrane

英文题名：Modified silicon carbide whisker reinforced polybenzimidazole used for high temperature proton exchange membrane

作者：Yangben Cai[1];Zhouying Yue[1];Qianlu Jiang[1];Shiai Xu[1,2]

机构：[1]Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology;[2]School of Chemical Engineering, Qinghai University

年份：2018

卷号：27

期号：3

起止页码：820

中文期刊名：Journal of Energy Chemistry

外文期刊名：能源化学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2017_2018】；

基金：financially sponsored by the Kunlun Scholar Award Program of Qinghai Province;the Fundamental Research Funds for the Central Universities (WD1315012)

语种：英文

中文关键词：Polybenzimidazole Silicon carbide whisker Phosphoric acid doping Proton exchange membrane Proton conductivity

外文关键词：Polybenzimidazole Silicon carbide whisker Phosphoric acid doping Proton exchange membrane Proton conductivity

摘要：Polybenzimidazole containing ether bond（OPBI） was reinforced with silicon carbide whisker（m Si C） modified by 3-aminopropyltriethoxysilane（KH550）, and then doped with phosphoric acid（PA） to obtain OPBI/m Si C/PA membranes. These OPBI/m Si C/PA membranes have excellent mechanical strength and oxidative stability and can be used for high temperature proton exchange membrane（HT-PEM）. The tensile strength of OPBI/m Si C/PA membranes ranges from 27.3 to 36.8 MPa, and it increases at first and then decreases with the increase of m Si C content. The high m Si C content and PA doping level contribute to improving the proton conductivity of membranes. The proton conductivity of PBI/m Si C-10/PA membrane is 27.1 m S cm-1 at 170℃ without humidity, with an increase of 55.7% compared with that of OPBI/PA membrane. These excellent properties make OPBI/m Si C/PA membranes promising membrane materials for HT-PEM applications.
Polybenzimidazole containing ether bond（OPBI） was reinforced with silicon carbide whisker（m Si C） modified by 3-aminopropyltriethoxysilane（KH550）, and then doped with phosphoric acid（PA） to obtain OPBI/m Si C/PA membranes. These OPBI/m Si C/PA membranes have excellent mechanical strength and oxidative stability and can be used for high temperature proton exchange membrane（HT-PEM）. The tensile strength of OPBI/m Si C/PA membranes ranges from 27.3 to 36.8 MPa, and it increases at first and then decreases with the increase of m Si C content. The high m Si C content and PA doping level contribute to improving the proton conductivity of membranes. The proton conductivity of PBI/m Si C-10/PA membrane is 27.1 m S cm-1 at 170℃ without humidity, with an increase of 55.7% compared with that of OPBI/PA membrane. These excellent properties make OPBI/m Si C/PA membranes promising membrane materials for HT-PEM applications.