**1.1 Low-temperature fuel cells**

The first large group of fuel cells, the low temperature ones (50 - 250 °C), is characterized by its more focused application on mobile devices and the automotive industry. Within the large group of low-temperature cells, there can also be a division, considering the type of electrolyte used. This classification results in three cell types: proton exchange membrane fuel cell (PEMFC), alkaline fuel cell (AFC); and phosphoric acid fuel cell (PAFC).
