| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === Fuel cell is one of a good choice of alternative energy due to its main water as the product. Non-precious metal catalysts of the oxygen reduction reaction (ORR) are extremely attractive in anion exchange membrane fuel cell AEMFC due to long stability and inexpensive cost. Here, a new concept of pyrolyzed poly(3,4-ethylene dioxythiophene) hydrate (PEDOT)-supported by Prussian blue (PB-PEDOT) catalyst for the oxygen reduction reaction in AEMFC cathode shows the high catalytic performance. The PB-PEDOT was pyrolyzed at different temperature to obtain FeCN-S-X (X = 600, 800, 1000 ℃) catalysts among which FeCN-S-800 displays obviously ORR activity. After acid leaching process and second pyrolysis, the optimized electrocatalyst FeCN-S-800-2nd has more positive onset potential and also shows significant ORR performance with a direct four-electron transfer pathway for the AEMFC application. As a result, the catalyst exhibited superior ORR electrocatalytic activity and stability are attributable to the specific structure, high specific surface area, heteroatoms contribution and coordination structure.
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