Synthesis, Characterization, and Thermal and Proton Conductivity Evaluation of 2,5-Polybenzimidazole Composite Membranes
Joint Authors
Khan, Sher Bahadar
Lee, Jin-Woo
Kim, Kwangin
Han, Patrick
Seo, Jongchul
Jang, Wonbong
Han, Haksoo
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-10-29
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
In this contribution, composite membranes (CM-D and CM-S) of 2,5-polybenzimidazole (PBI) were synthesized by adding inorganic heteropoly acids (IHA-D and IHA-S).
IHA-D and IHA-S were synthesized by condensation reaction of silicotungstic acid with tetraethyl orthosilicate (TEOS) in the absence and presence of mesoporous silica (SiO2), respectively.
The synthesized composites were structurally and morphologically characterized and further investigated the functional relationships between the materials structure and proton conductivity.
The proton conductivity as well as thermal stability was found to be higher for composite membranes which suggest that both properties are highly contingent on mesoporous silica.
The composite membrane with mesoporous silica shows high thermal properties and proton conductivity.
IHA-D shows proton conductivity of almost 1.48×10-1 Scm−1 while IHA-S exhibited 2.06×10-1 Scm−1 in nonhumidity imposing condition (150°C) which is higher than pure PBI.
Thus introduction of inorganic heteropoly acid to PBI is functionally preferable as it results in increase of ion conductivity of PBI and can be better candidates for high temperature PEMFC.
American Psychological Association (APA)
Lee, Jin-Woo& Kim, Kwangin& Khan, Sher Bahadar& Han, Patrick& Seo, Jongchul& Jang, Wonbong…[et al.]. 2014. Synthesis, Characterization, and Thermal and Proton Conductivity Evaluation of 2,5-Polybenzimidazole Composite Membranes. Journal of Nanomaterials،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041549
Modern Language Association (MLA)
Lee, Jin-Woo…[et al.]. Synthesis, Characterization, and Thermal and Proton Conductivity Evaluation of 2,5-Polybenzimidazole Composite Membranes. Journal of Nanomaterials No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1041549
American Medical Association (AMA)
Lee, Jin-Woo& Kim, Kwangin& Khan, Sher Bahadar& Han, Patrick& Seo, Jongchul& Jang, Wonbong…[et al.]. Synthesis, Characterization, and Thermal and Proton Conductivity Evaluation of 2,5-Polybenzimidazole Composite Membranes. Journal of Nanomaterials. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041549
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1041549