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Phosphoric acid-imbibed three-dimensional polyacrylamide/poly(vinyl alcohol) hydrogel as a new class of high-temperature proton exchange membrane
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tang, Qunwei Huang, Kevin Qian, Guoqing Benicewicz, Brian |
| Copyright Year | 2013 |
| Abstract | Abstract This paper reports the first study that investigates H 3 PO 4 -imbibed polyacrylamide/poly(vinyl alcohol) (PAM/PVA) semi-interpenetrating polymer network (semi-IPN) hydrogel as a high-temperature proton exchange membrane (PEM). The extraordinary ability of the PAM/PVA hydrogel to absorb a large quantity of aqueous solution is fully utilized to achieve a high H 3 PO 4 loading, resulting in high proton conductivity membranes. The anhydrous proton conductivity of a PAM/PVA semi-IPN hydrogel loaded with 73.5 wt% H 3 PO 4 reaches 0.0525 S cm −1 at 183 °C in dry air. A fuel cell using the thick-film PAM/PVA hydrogel exhibits a peak power density of 0.225 W cm −2 at 183 °C with pure O 2 and H 2 as the oxidant and fuel, respectively. The synthesized membrane also shows excellent acid retention under mechanical load and high humidity, a valued characteristic for high-temperature PEMs. These performance-ensuring properties paired with a low-cost synthesis approach demonstrate the new membrane to be a viable candidate as a high-temperature PEM. |
| Starting Page | 36 |
| Ending Page | 41 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jpowsour.2012.11.134 |
| Alternate Webpage(s) | http://www.benicewiczgroup.com/UserFiles/benigroup/Documents/BB85.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jpowsour.2012.11.134 |
| Volume Number | 229 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
