Alkaline fuel cells AFCs

This fuel cell dates back to the 1940s and was the first to be fully developed in the 1960s. It was used in the Apollo spacecraft programme. It employs an alkaline electrolyte such as potassium hydroxide set between nickel or precious metal electrodes. Its operating temperature is 60-80°C which enables it to have a short warm-up time.

Its main drawback is that the electrolyte reacts with carbon dioxide which significantly reduces its performance. This means it has to use pure hydrogen and oxygen as its fuels. Another problem is that it has an energy density one tenth that of PEMFCs, which makes it much bulkier for a given output. On the plus side it is relatively cheap and has a role in static applications.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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