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Polybenzimidazole and Phosphonic Acid Groups-Functionalized Polyhedral Oligomeric Silsesquioxane Composite Electrolyte for High Temperature Proton Exchange Membrane
Author
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-12
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Here, we report composite membrane consisting of poly[2,2′-(m-phenylene)-5,5′-(bibenzimidazole)] (PBI) and polyhedral oligomeric silsesquioxane functionalized with phosphonic acid groups (PO(OH)2-POSS) for high temperature proton exchange membrane.
~7 phosphonic acid groups are incorporated into the phenyl rings of POSS via bromination in a high yield (~93%), followed by substitution of the bromine elements by phosphonate ester groups via a Pd(0) catalyzed P–C coupling reaction.
Phosphonic acid groups are formed by the hydrolysis of the phosphonate ester groups in hydrobromic acid solution.
At a 50 wt% of PA content in the membranes, PBI/PO(OH)2-POSS composite membrane shows larger proton conductivity of 3.2 × 10−3 S cm−1 than 2.8 × 10−3 S cm−1 of PBI membrane at 150°C and anhydrous conditions, owing to the multiple phosphonic acid groups of PO(OH)2-POSS that can function as proton transport medium at high temperature and low humidity conditions.
American Psychological Association (APA)
Kim, Sung-Kon. 2016. Polybenzimidazole and Phosphonic Acid Groups-Functionalized Polyhedral Oligomeric Silsesquioxane Composite Electrolyte for High Temperature Proton Exchange Membrane. Journal of Nanomaterials،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1109088
Modern Language Association (MLA)
Kim, Sung-Kon. Polybenzimidazole and Phosphonic Acid Groups-Functionalized Polyhedral Oligomeric Silsesquioxane Composite Electrolyte for High Temperature Proton Exchange Membrane. Journal of Nanomaterials No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1109088
American Medical Association (AMA)
Kim, Sung-Kon. Polybenzimidazole and Phosphonic Acid Groups-Functionalized Polyhedral Oligomeric Silsesquioxane Composite Electrolyte for High Temperature Proton Exchange Membrane. Journal of Nanomaterials. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1109088
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1109088