Research progress in surface wettability of bipolar plates
As the gas-water channels,bipolar plates discharge the liquid water inside proton exchange membrane fuel cells(PEMFC),its raw material selection,surface morphology characteristics and surface wettability will affect the water management inside PEMFC.Aiming at the issues of adjusting and improving the surface wettability of bipolar plates,the effects of surface wettability of bipolar plates on the current density and power density of PEMFC,and the effects of surface roughness on surface wettability are reviewed.The approaches to improving the surface wettability of metal bipolar plates by different types of surface coatings are introduced.For the surface wettability of composite bipolar plates,a detailed analysis is conducted on the influence of different resin types on the surface wettability,and suitable surface coatings for composite bipolar plates are listed.Meanwhile,the methods of cleaning the resin-rich layer on the surface of composite bipolar plates are pointed out.The research directions and the developing application of bipolar plates with good wetting performance are prospected.
万方数据
维普
