Abstract
A benzimidazole pendant diamine, 5-(1H-benzoimidazol-2-yl)-benzene-1-3- diamine, was synthesized from 2-(3,5-dinitrophenyl)-1H-benzoimidazole. Here the dinitro compound was prepared from 3,5-dinitrobenzoyl chloride and 1,2-phenylene diamine. The benzimidazole pendant diamine was used to synthesis polyimide with pendant benzimidazole groups. These pendant benzimidazole groups present in polyimide main chain were used to dope phosphoric acid and phosphomolibdic acid thereby proton conducting polyelectrolyte membranes were prepared from them. The effect of changing concentration of phosphoric acid and phosphomolibdic acid on the properties of the membranes was studied. It was found that doping of phosphoric acid increased the conductivity at 30% R. H. and further addition of phosphomolibdic acid further increased the conductivity, which can be a promising applicable candidate for the high temperature operation and low humidity required fuel cell.
| Original language | English |
|---|---|
| Title of host publication | ECS Transactions - 30th Fuel Cell Seminar |
| Pages | 17-26 |
| Number of pages | 10 |
| Volume | 5 |
| Edition | 1 |
| DOIs | |
| Publication status | Published - 2007 Dec 1 |
| Event | 30th Fuel Cell Seminar - Honolulu, HI, United States Duration: 2006 Nov 13 → 2006 Nov 17 |
Other
| Other | 30th Fuel Cell Seminar |
|---|---|
| Country | United States |
| City | Honolulu, HI |
| Period | 06/11/13 → 06/11/17 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Acid-doped polyimide electrolyte membranes with pendant benzimidazole groups for fuel cell applications. / Jang, W.; Choi, S.; Lee, S.; Park, S.; Seo, Jongchul; Shul, Yong-Gun; Han, Haksoo.
ECS Transactions - 30th Fuel Cell Seminar. Vol. 5 1. ed. 2007. p. 17-26.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Acid-doped polyimide electrolyte membranes with pendant benzimidazole groups for fuel cell applications
AU - Jang, W.
AU - Choi, S.
AU - Lee, S.
AU - Park, S.
AU - Seo, Jongchul
AU - Shul, Yong-Gun
AU - Han, Haksoo
PY - 2007/12/1
Y1 - 2007/12/1
N2 - A benzimidazole pendant diamine, 5-(1H-benzoimidazol-2-yl)-benzene-1-3- diamine, was synthesized from 2-(3,5-dinitrophenyl)-1H-benzoimidazole. Here the dinitro compound was prepared from 3,5-dinitrobenzoyl chloride and 1,2-phenylene diamine. The benzimidazole pendant diamine was used to synthesis polyimide with pendant benzimidazole groups. These pendant benzimidazole groups present in polyimide main chain were used to dope phosphoric acid and phosphomolibdic acid thereby proton conducting polyelectrolyte membranes were prepared from them. The effect of changing concentration of phosphoric acid and phosphomolibdic acid on the properties of the membranes was studied. It was found that doping of phosphoric acid increased the conductivity at 30% R. H. and further addition of phosphomolibdic acid further increased the conductivity, which can be a promising applicable candidate for the high temperature operation and low humidity required fuel cell.
AB - A benzimidazole pendant diamine, 5-(1H-benzoimidazol-2-yl)-benzene-1-3- diamine, was synthesized from 2-(3,5-dinitrophenyl)-1H-benzoimidazole. Here the dinitro compound was prepared from 3,5-dinitrobenzoyl chloride and 1,2-phenylene diamine. The benzimidazole pendant diamine was used to synthesis polyimide with pendant benzimidazole groups. These pendant benzimidazole groups present in polyimide main chain were used to dope phosphoric acid and phosphomolibdic acid thereby proton conducting polyelectrolyte membranes were prepared from them. The effect of changing concentration of phosphoric acid and phosphomolibdic acid on the properties of the membranes was studied. It was found that doping of phosphoric acid increased the conductivity at 30% R. H. and further addition of phosphomolibdic acid further increased the conductivity, which can be a promising applicable candidate for the high temperature operation and low humidity required fuel cell.
UR - http://www.scopus.com/inward/record.url?scp=45149133724&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=45149133724&partnerID=8YFLogxK
U2 - 10.1149/1.2728984
DO - 10.1149/1.2728984
M3 - Conference contribution
AN - SCOPUS:45149133724
SN - 9781566775496
VL - 5
SP - 17
EP - 26
BT - ECS Transactions - 30th Fuel Cell Seminar
ER -