Fuel Cells · 2014 · 31 citations · 19 references
Natural SciencesChemical EngineeringMaterials ScienceElectrochemical EngineeringElectrochemistryEnergy MaterialsCatalytic MaterialsElectrochemical CellsElectrode MaterialsFuel Cell MembranesFuel CellsMetal Oxide NanomaterialsElectrocatalytic NanomaterialsFuel Cell CatalystsFuel Cell NanomaterialsMulti-walled Carbon NanotubesNanostructured MembranesOxygen Reduction CatalystsOxygen Reduction ReactionPolyaniline
Abstract In this paper multi‐walled carbon nanotubes (MWCNTs) supported binary AgNi nanoparticles are prepared by chemical reduction of Ag and Ni precursors with NaBH 4 . Fe/PANI catalyst is obtained by direct pyrolysis of Fe‐doped polyaniline in N 2 atmosphere at high temperature. Results show that the Fe/PANI catalyst presents high electroactivity for oxygen reduction reaction (ORR) in alkaline media. The onset potential for ORR is 0.01 V(vs Hg/HgO) and the ORR current density is 3.4 mA cm −2 @2000rpm at –0.4 V(vs HgO/Hg). A gas diffusion electrode is fabricated by using the Fe/PANI as the electrocatalyst of ORR. In alkaline media the AgNi/MWCNT catalyst displays efficient electroactivity for hydrazine oxidation. A lower onset potential of –0.5 V(vs Hg/HgO) and high current density for hydrazine oxidation are observed. A novel membrane‐less direct hydrazine/air fuel cell is designed by using the AgNi/MWCNT catalyst as the anode and the gas diffusion electrode as the cathode. The as‐fabricated fuel cell works properly and presents higher power density and current density.
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Michel Lefèvre, J. P. Dodelet, P. Bertrand · The Journal of Physical Chemistry B · 2000 · 338 citations
Jean Sanabria‐Chinchilla, Koichiro Asazawa, T. Sakamoto et al. · Journal of the American Chemical Society · 2011 · 317 citations