Journal
CHEMISTRYSELECT
Volume 7, Issue 45, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202203544
Keywords
Fuel cell; FeFe2O4; Oxygen reduction reaction; Catalyst; Hydrothermal reaction
Categories
Funding
- National Natural Science Foundation of China
- Natural Science Foundation of Liaoning Province
- Cultivation Program for the Excellent Doctoral Dissertation of Dalian Maritime University
- Dalian Science and Technology Innovation Funds
- [21676040]
- [2019JH3/30100009]
- [0143210269]
- [2021JJ11CG004]
- [2020JJ26GX042]
- [2018J12GX053]
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Nanoparticles of FeFe2O4 were synthesized through a hydrothermal reaction and their electrochemical performance in oxygen reduction reaction (ORR) was evaluated. FeFe2O4-0.50 exhibited the best catalytic activity and stability, and could be a potential catalyst for ORR.
By pyrolyzed the products from hydrothermal reaction of 1, 4, 5, 8-naphthalene tetramethyl anhydride, NaOH and FeSO4, the nanoparticles of FeFe2O4 were produced, and then its electrochemical performance of oxygen reduction reaction (ORR) was evaluated in O-2 saturated 0.1 M KOH solution. The results indicated that, among all the as-prepared samples, FeFe2O4-0.50 was mainly composed of uniformly dispersed spherical nanoparticles of 20-30nm and behaved the best ORR catalytic performance. Its half-wave potential and limiting diffusion current density was 0.61 V and -1.85 mA cm(-2)@0.4 V vs. RHE), respectively, higher about 20 mV and 1.29 mA cm(-2) than that of FeFe2O4 (0.59 V and -0.56 mA cm(-2)@0.4 V vs. RHE). In addition, FeFe2O4-0.50 also showed stronger stability as well as methanol/CO tolerance than that of commercial 20 % Pt/C. It was the evenly dispersed FeFe2O4 nanoscale and Fe-O bond in FeFe2O4-0.50 that contributed its excellent electrochemical performance and tolerance for CO and methanol. The as-prepare FeFe2O4-0.50 might be a potential alternative catalyst for ORR in fuel cell.
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