Chinese scientists have developed a proton exchange membrane fuel cell with ultra-high volumetric power density, more than 80 percent higher than the performance of mainstream counterparts.
Jiao Kui, a professor at Tianjin University's School of Mechanical Engineering, and his team redesigned the proton exchange membrane fuel cell's architecture, incorporating new components and optimizing the gas-water-electric-heat transfer routes.
The team created an ultra-thin and ultra-high power density fuel cell. They eliminated traditional gas diffusion layers and flow channels by using ultra-thin carbon nanofiber film produced by electrospinning technology and metal foam.
This progress has contributed to a 90 percent reduction in the thickness of the membrane electrode assembly and a 80 percent reduction in mass transfer losses caused by reactant diffusion, nearly doubling the volumetric power density of the fuel cell.
The research team estimates that the peak volumetric power density of the fuel cell stack using the new structure will reach 9.8 kilowatts per litre.
Full story at Chinese scientists develop high-performance hydrogen fuel cells - People's Daily Online
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