Research progress of nitride coatings on PEMFC metal bipolar plate
Proton exchange membrane fuel cell(PEMFC)metal bipolar plates have advantages such as high mechanical strength,easy processing and low cost.However,they are prone to corrosion in the acidic environment of PEMFC,which can have adverse effects on their lifespan and electrical conductivity.The surface structure of the bipolar plates modified by nitride coating will become denser,which can improve the corrosion resistance of the substrate and thus improve the working life of fuel cells.This article reviews the research progress of nitride coatings in recent years,starting from the kinds of nitride coatings.Then the common preparation methods for coatings are introduced,and their principles are analyzed.The nitride coatings prepared by different methods are analyzed and compared.Subsequently,the characteristics and existing problems of different kinds of coatings are summarized,and the corrosion resistance performance of different kinds of coatings is compared.Finally,the existing problems of nitride coatings are pointed out,and their future development directions are prospected.
NETL
NSTL
万方数据
维普
