Fuel and electrolysis cells both involve electrochemical reactions (one is the reverse of the other), and their efficiency depends on the catalysts used on the electrodes. Conventional metal catalysts coarsen at high temperatures, reducing activity and durability. Elizabeth Thomson at MIT describes new research there that uses ion irradiation to precipitating metal nanoparticles onto the surface of the electrode. The process allows close control … [Read more...]
Making Fuel Cells cheap enough for mainstream use: can Cobalt nanoparticles replace Platinum as catalysts?
Fuel cells could be a game-changer in decarbonisation. They efficiently convert chemical energy into electricity with only water and heat as byproducts. One of the most promising types is the PEMFC (polymer electrolyte membrane fuel cell) because of its applications in transportation, as well as stationary power sources. But it can’t go mainstream until the costs come down, specifically the platinum catalysts. Platinum is scarce and expensive. … [Read more...]
Clean Hydrogen from water electrolysis: research into catalysts to meet global targets
The full potential of the new hydrogen economy will depend on producing enough clean hydrogen from water electrolysis which uses precious metals. But, as Glennda Chui at SLAC (Stanford University & DoE) explains, there aren’t enough precious metals in the world to get to the scale we need. And their cost is so high the clean hydrogen they generate could never compete with hydrogen derived from fossil fuels. Over 95% of hydrogen produced today … [Read more...]