Research Article
3D Network Structural Poly (Aryl Ether Ketone)-Polybenzimidazole Polymer for High-Temperature Proton Exchange Membrane Fuel Cells
Figure 5
SEM micrographs of the surface (up) and cross-section (down) of PA-undoped membranes: (a, d) PBI, (b, e) PAEK-cr-PBI, and (c, f) PAEK-cr-PBI@PBI.
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