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A Novel Membraneless Direct Hydrazine/Air Fuel Cell
Author(s) -
Yi Q.,
Chu H.,
Tang M.,
Zhang Y.,
Liu X.,
Zhou Z.,
Nie H.
Publication year - 2014
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201400098
Subject(s) - hydrazine (antidepressant) , electrocatalyst , catalysis , anode , chemical engineering , materials science , polyaniline , current density , carbon nanotube , cathode , alkaline fuel cell , pyrolysis , inorganic chemistry , electrode , chemistry , electrochemistry , nanotechnology , organic chemistry , composite material , electrolyte , polymer , chromatography , physics , quantum mechanics , engineering , polymerization
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.