文摘
英文文摘
声明
Chapter Ⅰ Introduction
1.1 Proton Exchange Membrane Fuel cell(PEMFC)
1.2 Direct Methanol Fuel Cell(DMFC)
1.3 Brief review of previous reseach work
1.3.1 Pt-based methanol-tolerant catalysts for ORR
1.3.2 Non-precious metal based methanol-tolerant catalysts for ORR
1.4 Focus of catalytic solutions in this work
Chapter Ⅱ Evaluation of Methanol-tolerant Activity of Platinum Catalysts Assistance with Different MePcs
2.1 Introduction
2.2 Experimental
2.2.1 Preparation of Pt-MPc/C catalysts by impregnation method
2.2.2 Characteristic of Pt-MePc/C catalysts and electrochemical measurements
2.3 Results and discussion
2.4 Conclusions
Chapter Ⅲ The Possible Mechanism of the Promotion of Methanol-tolerant Activity of Pt-MePc/C Co-catalysts
3.1 Introduction
3.2 Experimental
3.2.1 Chemical
3.2.2 Electrochemical measurement
3.3 Results and discussion
3.3.1 The weakening of intermediates adsorption effect
3.3.2 The declining of apparent activation energy
3.4 Concllusions
Chapter Ⅳ Methanol-tolerant activity of MePc modified Pt nano-particle composite catalysts synthesized by colloid method
4.1 Introduction
4.2 Experimental
4.2.1 Materials
4.2.2 Synthesis of carbon supported MePc-Pt colloid catalyst (Me=Ni and Cu)
4.2.3 Characteristic of catalyst
4.2.4 Electrochemical measurements
4.3 Results and discussion
4.3.1 Characteristic of MePc-Pt/C catalysts
4.3.2. Cyclic Voltammetry
4.3.3. Chronoamperometry
4.3.4. Linear sweep voltammetry
4.4 Conclusions
Chapter V Catalytic activity towards oxygen reduction of MePc modified Pt nano-particle composite catalysts
5.1 Introduction
5.2 Experimental
5.2.1 Materials
5.2.2 Electrochemical measurements
5.3 Results and discussion
5.3.1 ORR on Pt/C and NiTsPe-Pt/C in the presence of methanol
5.3.2 Kinetic analysis of ORR on NiTsPc-Pt/C and CuTsPc-Pt/C
5.4 Conclusions
List of symbols
Charter Ⅵ Conclusions
References
Acknowledgements
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