VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY
Hot module fuel cell. Technician assembling a hot module fuel cell prior to testing. He is adjusting the stack of cells, and is about to slide the entire stack into the cylindrical oven. This "hot module" fuel cell uses chemical reactions to produce up to 3 megawatts of electricity. The cells are kept at 650 degrees celsius, with molten potassium carbonate and lithium carbonate as the electrolytes. Its only waste product is steam. Fuel cells are being studied as modern power sources as they are clean, efficient and portable. This cell is able to be transported by train. It is hoped cells such as this will be an alternative to large, costly power stations.
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