| Summary: | 碩士 === 國立高雄大學 === 應用化學系碩士班 === 104 === Electrocatalysts for oxygen reduction are a critical component that may dramatically enhance the performance of fuel cells and Li-O2 batteries, which may provide the power for future electric vehicles. Here, we present a new idea to improve the cathode material, which use an electrospinning to synthesis nitrogen-doped porous carbon nanofiber (N-PCNF). Porous carbon materials play key roles in rechargeable Li-O2 batteries as oxygen diffusion media and sites for reversible electrode reactions. N-PCNFs are prepared by the low cost, simple and environmentally benign electrospinning technique and the subsequent carbonization process. We synthesized the composite of FePc(iron phthalocyanine) and nitrogen-doped porous carbon nanofiber (FePc/Py/N-PCNFs) from covalent functionalization of porous carbon fiber (Py/N-PCNFs) In this approach, pyridyl groups (Py) were first anchored on the walls of porous carbon nanofiber, taking advantage of the diazonium reaction. FePc was then coordinated to Py/N-PCNFs through the bond formed between nitrogen atom in pyridine and iron centre in FePc.
The products were characterized using XRD, XPS, SEM, Raman, BET, and TEM . Then, we will do electrical analysis by AC, charge-discharge cycle, and RDE.
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