文献类型：期刊文献

英文题名：Radiation grafting graphene oxide reinforced polybenzimidazole membrane with a sandwich structure for high temperature proton exchange membrane fuel cells in anhydrous atmosphere

作者：Cai, Yangben[1];Yue, Zhouying[1];Teng, Xin[1];Xu, Shiai[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Qinghai Univ, Sch Chem Engn, Xining 810016, Qinghai, Peoples R China

年份：2018

卷号：103

起止页码：207

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：20181705037658);WOS:【SCI-EXPANDED(收录号:WOS:000434745200022)】；

基金：This research is financially supported by the National Natural Science Foundation of China (21764011), the Foundation from Qinghai Science and Technology Department (2017-HZ-803), Thousand Talents Program of Qinghai Province, Kunlun Scholar Award Program of Qinghai Province and Shanghai Aerospace Science and Technology Innovation Foundation.

语种：英文

外文关键词：Three-layer membrane; Proton exchange membrane; Polybenzimidazole; Radiation grafting graphene oxide; Phosphoric acid doping

摘要：A three-layer membrane (TLM) of radiation grafting graphene oxide reinforced polybenzimidazole/porous polybenzimidazole/radiation grafting graphene oxide reinforced polybenzimidazole (PBI-RGO/PPBI/PBI-RGO) was fabricated and then doped with phosphoric acid (PA) for high temperature proton exchange membranes (HT-PEMs) in anhydrous atmosphere. These TLMs have a sandwich structure and the diameter of most pores falls in the range between 500 nm and 2 mu m. PA doped TLMs display excellent mechanical strength and oxidative stability. The tensile strength of PA doped PBI-RGO/PPBI/PBI-RGO membranes ranges from 22.7 to 38.5 MPa, which is significantly higher than that of PA doped PPBI membrane (7.9 MPa). The introduction of RGO and porous structure can improve the proton conductivity of membranes. The proton conductivity of PA doped PBI-RGO/PPBI-80/PBI-RGO membrane is 113.8 mS. cm(-1) at 170 degrees C without humidity, with an increase of 4.9 times compared with that of PA doped PBI membrane. The sandwich structure endows the membrane with lower PA leakage and higher proton conductivity, thus making it a promising membrane for HT-PEM applications.