High Performance Palladium Supported on Nanoporous Carbon under Anhydrous Condition.

ABSTRACT: Due to the high cost of polymer electrolyte fuel cells (PEFCs), replacing platinum (Pt) with some inexpensive metal was carried out. Here, we deposited palladium nanoparticles (Pd-NPs) on nanoporous carbon (NC) after wrapping by poly[2,2'-(2,6-pyridine)-5,5'-bibenzimidazole] (PyPBI) doped with phosphoric acid (PA) and the Pd-NPs size was successfully controlled by varying the weight ratio between Pd precursor and carbon support doped with PA. The membrane electrode assembly (MEA) fabricated from the optimized electrocatalyst with 0.05 mg_Pd cm^-2 for both anode and cathode sides showed a power density of 76 mW cm^-2 under 120 °C without any humidification, which was comparable to the commercial CB/Pt, 89 mW cm^-2 with 0.45 mg_Pt cm^-2</

SUBMITTER: Yang Z 

PROVIDER: S-EPMC5109910 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature