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- W2364595387 abstract "By using spray-drying treated ammonium metatungstate(AMT) as precursor,the hollow globular tungsten carbide(WC) catalysts were prepared by sphere miniaturation-gas-solid reaction,and then the catalysts Pt/WC and Pt/C were prepared by reduction of platinum salts with HCHO in H2O solvent.The size of Pt metal particles in both catalysts was characterized by XRD and SEM,and the results indicated that Pt metal particles were 10.6 nm in Pt/WC while they were 2.8 nm in Pt/C.The measured polarisation curves of oxygen reduction reaction(ORR) in the gas diffusion electrode showed that Pt/WC oxygen-diffusion electrode exhibited a better electro-catalytic properties than Pt/C in acid solution,as shown by the higher current density at the same potential and initial potential of oxygen reduction positive.Then the possible reason and electro-catalytic mechanism were discussed,and the AC impedance spectra of gas diffusion electrode with Pt/WC under the controlled conditions were also studied." @default.
- W2364595387 created "2016-06-24" @default.
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- W2364595387 date "2009-01-01" @default.
- W2364595387 modified "2023-09-22" @default.
- W2364595387 title "Preparation and characterization of Pt/WC catalyst for oxygen reduction at gas-diffusion electrode" @default.
- W2364595387 hasPublicationYear "2009" @default.
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