Novel Graphite Paper/Cu-Coated Magnesium as Bipolar Plates for Ultra-lightweight Proton Exchange Membrane Fuel Cells

Magnesium bipolar plates (BPPs) offer great advantage in realizing the ultra-lightweight target of proton exchange membrane fuel cells (PEMFCs). However, high corrosion tendency limits its application. To improve resistance and surface conductivity Mg BPPs, a novel Graphite paper/Cu coating is proposed this study. 24 h potentiostatic polarization results reveal that current density coated specimen dropped by 4 orders magnitude than bare Mg. In addition, interfacial contact (ICR) BPPs at 1.4 MPa was remarkably reduced after coating, from 597.22 mΩ cm 2 to 5.49 test, respectively, which reached set U.S. Department Energy (DOE). The illustrate exhibits excellent anti-corrosion electrical property, may promising strategy for design on PEMFCs.