Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7737912 | Journal of Power Sources | 2014 | 8 Pages |
Abstract
Proton exchange membrane (PEM), transferring protons from anode to cathode, is a key component in a PEM fuel cell. In the current work, a new class of PEMs are synthesized benefiting from the imbibition behavior of three-dimensional (3D) polyacrylamide-graft-chitosan (PAAm-graft-chitosan) frameworks to H3PO4 aqueous solution. Interconnected 3D framework of PAAm-graft-chitosan provides tremendous space for holding proton-conducting H3PO4. The highest anhydrous proton conductivity of 0.13 S cmâ1 at 165 °C is obtained. A fuel cell using a thick membrane as a PEM showed a peak power density of 405 mW cmâ2 with O2 and H2 as the oxidant and fuel, respectively. Results indicate that the interconnected 3D framework provides superhighway for proton conduction. The valued merits on anhydrous proton conductivity, huge H3PO4 loading, and easy synthesis promise the new membranes to be good alternatives as high-temperature PEMs.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Shuangshuang Yuan, Qunwei Tang, Benlin He, Haiyan Chen, Qinghua Li, Chunqing Ma, Suyue Jin, Zhichao Liu,