“…Among them, proton exchange membrane fuel cell (PEMFC) is the best alternative to traditional power supply due to its advantages of simple structure, fast start, high power density, low noise, zero pollution and so on 3 – 5 . PEMFC has great application potential in electric vehicles, distributed power generation, portable power system, islanded microgrid, aerospace equipment, etc., and plays an important role in alleviating environmental pressure and rebuilding energy consumption structure because of its outstanding environment-friendly characteristics 6 , 7 . However, its disadvantages such as short service life, fast performance decay and high maintenance cost have not been well solved, which hinder their further wide popularization and applications 8 , 9 .…”