Dissertation
Dissertation > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Chemical power sources,batteries, fuel cells > Fuel cell

The Study of Ordered Mesoporous Materials Applied in the Catalysts of Fuel Cell

Author ShenMin
Tutor ZhuHong
School Beijing Jiaotong University
Course Applied Chemistry
Keywords Fuel cell Ordered Mesoporous Carbon Hydrothermal synthesis method Ultrasound synthesis Catalyst carrier Catalytic activity
CLC TM911.4
Type Master's thesis
Year 2009
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Energy saving and environmental protection has become the core of sustainable development in today's society . Fuel cell (FC) for its high efficiency , zero pollution , easy-to-use features coming into view , is considered to be the 21st century preferred green , efficient power generation technology . The fuel cell catalyst development is one of the fuel cell developers most challenging tasks . The paper and to improve the catalytic activity of fuel cell catalysts , the introduction of the nanosized mesoporous materials , new nanoscale mesoporous carbon synthesis method , as a the carrier preparation of fuel cell catalyst . This thesis is synthesized by the hydrothermal synthesis method and ultrasonic synthesis method two different ordered mesoporous carbon synthesis of ordered mesoporous carbon structure test and topography test , comparing the two ordered mesoporous carbon characteristics. The XRD results show that : the hydrothermal synthesis method and ultrasound synthesis could be synthesized ordered mesoporous carbon material . TEM showed that : the hydrothermal synthesis method ordered mesoporous carbon structural collapse , some regions have amorphous structure ; synthesized by ultrasonic synthesis of mesoporous carbon internal rules ordered two-dimensional hexagonal structure . In this thesis, the synthesis of the disorder activated carbon , hydrothermal synthesis method and ultrasound synthesis , respectively , two ordered mesoporous carbon as carrier , with intermittent microwave heating method were prepared Pt / C , PtAu / C , PtAuSn / C three categories catalyst. Three types of catalysts by cyclic voltammetry (CV) , electrochemical performance testing : the catalytic activity of the catalyst was ordered mesoporous carbon as a carrier system is superior to the catalyst disorder activated carbon as a carrier system , the ultrasonic synthesis method ordered mesoporous carbon for the catalytic activity of the catalyst upload system . Ordered mesoporous carbon was used as the carrier system of anti- poisoning of the Pt / C, PtAu / C catalyst performance is worse than the catalyst disorderly activated carbon system , Ordered Mesoporous Carbon as a carrier system was PtAuSn / C catalyst poisoning performance than activated carbon as the catalyst carrier system was better , the synthetic ultrasound synthesis of ordered mesoporous carbon carrier system was anti- PtAuSn / C catalyst poisoning the best performance . Therefore concluded : Synthesis of Ordered Mesoporous Carbon ultrasound synthesis , and this mesoporous carbon carrier preparation PtAuSn / C catalyst is an ideal fuel cell catalyst preparation .

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