| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 104 === We have synthesized ORR electrocatalysts based on MOF modified CNT derived from growth of metal–organic frameworks on carbon nanotubes, followed by pyrolysis. After the pyrolysis in the specific temperature, the catalysts demonstrates an excellent ORR ability with the electron-transfer number of 3.99, which is very close to the ideal four electron-transfer number .
The high catalytic performance of catalyst is probably attributed to two reasons. One is the co-existence of unique Fe2P@CNT structure and high amount of unoccupied Graphitic-N π*, which are the active sites for ORR. The other reason is attributable to the formation of porous structure and high conductivity skeleton from CNT. Furthermore, Mesoporous structure and high surface area boosts the active sites and reactivity during electrolysis. In addition, the catalyst has an excellent stability after 30,000 cycles of stability test. The decay of half-wave potential is only 2.2 mV.
Our novel material provides a simple approach for fabricating unique and high efficiency electrocatalysts. It is a very competitive choice to apply in many electrochemical reactions and systems.
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