報告題目：Functionalized Meso-Silica: A New Approach to the Development of High Temperature Proton Exchange Membranes for Fuel Cells
報 告 人：San Ping Jiang (蔣三平)
Fuels and Enegry Technology Institute & Deaprtment of Chemical Engineering, Curtin University, Perth, WA 6102, Australia
報告時間：2013年12月11日下午2:30
報告地點：化學樓一號會議室
報告簡介：
Proton exchange membrane fuel cells (PEMFCs), where chemical energy of fuels such as hydrogen and methanol is directly converted to electrical energy, provide a highly efficient alternative to standard internal combustion engines. PEMFCs have advantages of high power densities, very low greenhouse gas emissions, low-temperature operation, rapid start-up and shut-down times and the ability to use fuels from renewable sources. One of the key components in a fuel cell system is the proton exchange membrane (PEM). PEM not only needs to be highly stable in harsh chemical and physical environment in fuel cells, but also preferably possesses the high proton conductivity at elevated temperature and low humidity conditions to increase the efficiency and reduce the cost of PEMFCs power systems.
In this seminar, the research activities and progresses in the development of functionalized mesoporous silica nanocomposites as PEMs for fuel cells will be discussed. Extensive experimental and computational results indicate that proton carrier such as H3PW12O40 (HPW) can be effectively immobilized within the mesoporous silica matrix, forming a new class of highly conductive nanocomposite materials. The latest development of the high temperature PEMs based on the sintered meso-silica shows the feasibility of the development of PEMFCs with operation temperature range of 300-400oC, a critical temperature range for the development of highly efficient fuel cells based on liquid alcohol fuels.
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