Abstract
Recently, membranes with high anhydrous proton conducting have been attracted remarkable interest for the application to the polymer electrolyte membrane fuel cell (PEFC). In this paper, we have investigated the anhydrous proton conductor consisting of alginic acid (AA), one of the acidic biopolymers, and imidazole (Im). This AA-Im composite material showed the proton conductivity of 2×10-3 S cm-1 at 130°C under anhydrous conditions. Additionally, these AA-Im composite materials have the highly mechanical property and thermal stability. Furthermore, the biological products, such as biopolymer, are cheap, non-hazardous, and environmentally benign. The proton conductive biopolymer composite material may have the potential for its superior ion conducting properties, in particular, under anhydrous (water-free) or extremely low humidity conditions.
Original language | English |
---|---|
Pages (from-to) | 8349-8354 |
Number of pages | 6 |
Journal | Polymer |
Volume | 45 |
Issue number | 25 |
DOIs | |
Publication status | Published - 2004 Nov |
Externally published | Yes |
Keywords
- Biopolymer
- Polymer electrolyte membrane fuel cell
- Proton conductivity
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry