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Cathode electrodes of proton exchange membrane fuel cells were fabricated by using Pt sputter deposition to increase the gravimetric power density (W mgPt−1) with reduced Pt loading. Ultra low Pt‐based electrodes having Pt loading in between 0.0011 and 0.06 mgPt cm−2 were prepared by a radio frequency (RF) sputter deposition method on the surface of a non‐catalyzed gas diffusion layer (GDL) substrate...
A water‐soluble ionic conjugated polymer was prepared via uncatalyzed polymerization of 2‐ethynylpyridine using iodomethane. The polymerization proceeded well to give a moderate yield of polymer. A polymerization mechanism is proposed where the reaction of 2‐ethynylpyridine reacts with iodomethane to form an activated triple bond, which undergoes a linear identical propagation process. The chemical...
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