components_of_pem_fuel_cells_an_overview

Fuel cells, as devices for direct conversion of the chemical energy of a fuel into<br>electricity by electrochemical reactions, are among the key enabling technologies for the transition<br>to a hydrogen-based economy. Among the various types of fuel cells, polymer electrolyte<br>membrane fuel cells (PEMFCs) are considered to be at the forefront for commercialization for<br>portable and transportation applications because of their high energy conversion efficiency and low<br>pollutant emission. Cost and durability of PEMFCs are the two major challenges that need to be<br>addressed to facilitate their commercialization. The properties of the membrane electrode assembly<br>(MEA) have a direct impact on both cost and durability of a PEMFC.

燃料电池作为通过电化学反应将燃料化学能直接转化为电能的装置，是向氢能经济转型的关键支撑技术之一。在各类燃料电池中，聚合物电解质膜燃料电池（polymer electrolyte membrane fuel cells, PEMFCs）凭借较高的能量转换效率与低污染物排放，被认为在便携式及交通应用的商业化进程中处于前沿地位。聚合物电解质膜燃料电池的成本与耐久性，是推动其商业化落地需解决的两大核心挑战。膜电极组件（membrane electrode assembly, MEA）的性能，直接影响聚合物电解质膜燃料电池的成本与耐久性。