应用高压有机溶胶法制得高性能的Pt/C催化剂.该催化剂的活性颗粒度达2.8 nm,活性比表面为450 m2/g,并进行了小批量试产(10 g).建立新型直接涂膜电极和免增湿技术,并制作了275 cm2的膜电极,设计和组装5 kW质子交换膜燃料电池电堆,以氢气为燃料,空气为氧化剂在常温常压免增湿条件下试运行,电堆连续运行10 h,输出功率基本稳定不变.
The Pt/C catalyst with high dispersion and high performance was prepared successfully by an organic colloidal method and small batch production(10g) of Pt/C catalyst has been realized.The particle sizes of the active components in the catalyst could be as small as 2.8 nm and the active surface area was up to 450 m2/g.A high performance membrane-electrode assembly(MEA) with surface area of 275 cm2 has been prepared by using the home-made catalyst with a catalyst coated membrane method invented in the lab,and a 5 kW stack has been assembled.The stack showed working 10 h at room temperature,atmosphere and without humidification.
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