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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Peng, Sikan Lu, Shanfu Xiang, Yan Xu, Xin Wang, Haining |
| Copyright Year | 2016 |
| Abstract | A phosphotungstic acid (HPW) self-anchored hybrid proton exchange membrane (PES/PVP-HPW) is prepared and evaluated in direct methanol fuel cells (DMFCs). The proton conductivity of the hybrid membrane is 0.045 S cm−1 at 25 °C, and reaches 0.078 S cm−1 at 80 °C. The hybrid membrane shows a methanol permeability of 1.65 × 10−6 cm2 s−1. The stability test for the hybrid membrane in 2 M methanol at 50 °C for about 100 h reveals that HPW is well immobilized in the hybrid membrane. The DMFC based on the PES/PVP-HPW hybrid membrane with a thickness of 55 μm exhibits comparable performance of 132 mW cm−2 to that of Nafion212 at 80 °C. The effects of the hybrid membrane thickness and methanol concentration on DMFCs performance are evaluated. The optimal methanol concentration and thickness of the membrane is about 1–2 M and 55 μm, respectively. Furthermore, a 130 h stability test for DMFC with PES/PVP-HPW demonstrates that the hybrid membrane is quite stable, which indicates that PES/PVP-HPW is an attractive low-cost alternative proton exchange membrane to Nafion® for portable power sources. |
| Starting Page | 43049 |
| Ending Page | 43055 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 49 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra07318b |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Semipermeable membrane Direct methanol fuel cell Nafion Micrometre Proton Proton-exchange membrane Methanol |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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