燃料電池系統需要使用多種材料，包括金屬、塑料和密封材料。它們既用于燃料電池核心本身，即所謂的“堆”，也用于氫氣、氧氣、空氣供應和冷卻回路。它們還用于泵、閥門、壓縮機、管道和連接器等部件。包括的塑料有：全氟磺酸樹脂，PEN，有機硅，PPS，PPA，PA66，PA6，TPV，EPDM，PP，PBT，碳纖維復合材料，PA6等等。
Fuel-cell systems require the use of numerous materials, including metals, plastics and sealing materials. These are used both for the fuel cell core itself, the so-called “stack,” and the hydrogen, oxygen, air supply and cooling circuit. They are also used in components such as pumps, valves, compressors, pipes and connectors.