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Alkaline fuel cells (AFCs) was one of the first extensively researched fuel cell types and was used by NASA for the Gemini, Apollo, and Space Shuttle missions. The first alkali electrolyte fuel cell was built by Francis Thomas Bacon (1904–1992) in 1939. He used potassium hydroxide for the electrolyte and...
Fuel cells can be used for primary power, backup power, or combined heat and power (CHP) for stationary applications. Stationary fuel cells can be sized to power anything from a single-family home to a large business center, which means they make sense for a wide range of markets including retail, data centers, residential, telecommunications, and...
Fuel cells are not limited to pure hydrogen gas as fuel. Each type of fuel cell stack has different fuel tolerances. The lower the operating temperature of the stack, the stricter the requirements for pure fuel. For fuels other than pure hydrogen, an external fuel processing system may...
In a previous blog post, we described bipolar plates and the associated materials for low-temperature fuel cells. The materials previously described are selected for fuel cell stacks at or slightly above room-temperature -- which means that the materials are chemically compatible with the stack between 0 – 140 °C. The fuel cells that operate at higher temperatures require...
Fuel cells have been researched and developed for use in several applications since the early 1990's. Fuel cells can be used for portable, backup, transportation, and stationary power applications. This article briefly describes some of these uses for fuel cells.