Proton exchange membrane (PEM) is one of the core part in proton exchange membrane fuel cell (PEMFC). Cathode and anode are separated by PEM and carriers are conducted within it. However

the proton conductivity and dimensional stability of homogeneous PEM are still not ideal. Organic-inorganic hybrids is considered as taking the advantages of both organic and inorganic materials

which have important applications in PEMs. This article reviews some recent progresses in the application of organic-inorganic hybrids in PEMs for fuel cells. PEMs doped with metal nanoparticles or metal salt are introduced; and PEMs doped with silica and its modified products are introduced; and PEMs doped with graphene oxide or clay are introduced. The advantages and disadvantages of each type of PEM are analyzed in aspect of its preparation method and performance.