文献类型：期刊文献

英文题名：A novel polybenzimidazole composite modified by sulfonated graphene oxide for high temperature proton exchange membrane fuel cells in anhydrous atmosphere

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

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

年份：2017

卷号：134

期号：25

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20170903395838);WOS:【SCI-EXPANDED(收录号:WOS:000397934100004)】；

基金：This research is financially sponsored by the Fundamental Research Funds for the Central Universities. The author gratefully acknowledges to Nuclear Technology Application Institute of East China University of Science and Technology for their 60Co gamma- ray source.

语种：英文

外文关键词：high temperature proton exchange membrane; phosphoric acid doping; polybenzimidazole; radiation grafting graphene oxide

摘要：A novel functional graphene with high ion exchange capacity (IEC) was prepared by grafting reaction induced by Co-60 gamma-ray irradiation using graphene oxide. Then, polybenzimidazole/radiation grafting graphene oxide (PBI/RGO) composite membranes were prepared by the solution-casting method and doped with phosphoric acid (PA) to improve their proton conductivity. The properties of PBI/GO/PA and PBI/RGO/PA membranes including the PA doping level, chemical stability, proton conductivity and mechanical properties were evaluated and compared. The tensile strength of PBI/RGO/PA membranes (ranging from 27.3 to 38.5 MPa) increases at first and then decreases with the increase of the RGO content, and is significantly higher than that of other PA doped PBI-based membranes. The proton conductivity of PBI/RGO-3/PA membrane is 28.0 mS cm(-1) at 170 degrees C without humidity, with an increase of 72.0% compared with that of PBI/PA membrane. These results suggest that PBI/RGO/PA membranes have the potential to be used as high-temperature proton exchange membranes. (c) 2017 Wiley Periodicals, Inc.