Phosphoric-acid fuel cells
From Biocrawler, the free encyclopedia.
Phosphoric-acid fuel cells (PAFC) are a type of fuel cell that uses a sponge soaked in phosporic aicid as an electrolyte. They are not affected by carbon monoxide impurities in the hydrogen stream. They require platinum catalysts, which drives up the price. Unfortunately, the phosphoric acid solidifies under 40ºC, making startup very difficult. They have been used for stationary applications with an efficiency of about 40%, and many believe they do not offer much potential for further development.
