Document Details Document Type : Article In Journal  Document Title : Fuel cell based on novel hyper-branched polybenzimidazole membrane Fuel cell based on novel hyper-branched polybenzimidazole membrane   Document Language : English  Abstract : A novel hyper-branched polybenzimidazole (HB-PBI) has been synthesized and efficiently utilized as a conducting polymer for the fabrication of an efficient high temperature fuel cell. The developed fuel cell showed outstanding proton conductivity (0.168 Scm(-1) at 150 A degrees C) along with excellent single cell performance, displaying a maximum power density of 0.346 Wcm(-2). The HB-PBI has been synthesized by polymerization of bibenzimidazole diterephthalic acid (BBIDTA) and 3,3'-diaminobenzene in the presence of poly phosphoric acid while the BBIDTA was synthesized by treating trimellitic anhydride with 3,3'-diaminobenzene. Both HB-PBI and BBIDTA were structurally characterized by nuclear magnetic resonance (H-1 and C-13 NMR). HB-PBI showed high thermal stability and mechanical properties, findings that were corroborated by thermogravimetric analysis and use of a universal testing machine. Additionally, proton conduction and the thermal and mechanical properties of HB-PBI were compared with polybenzene imidazole (m-PBI), and found that HB-PBI has higher proton conducting, thermal and mechanical properties.  ISSN : 1598-5032  Journal Name : MACROMOLECULAR RESEARCH  Volume : 21  Issue Number : 1  Publishing Year : 1434 AH 2013 AD  Article Type : Article  Added Date : Sunday, July 23, 2017  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email c Liu liu, c Researcher     S Khan Khan, S Researcher     M lee Lee, M Researcher     K kim kim, K Researcher     A Akhtar Akhtar, A Researcher     H Han Han, H Researcher     A Asiri Asiri, A Researcher     Files File Name Type Description  42170.pdf pdf   Back To Researches Page