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Title: Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells
Authors: Das S.
Dutta K.
Enotiadis A.
Papiya F.
Kundu, Patit Paban
Bhattacharya S.K.
Giannelis E.P.
Published in: Materials Research Express
Abstract: This paper reports the synthesis and utilization of cerium oxide (CeO ) nanorods as a cathode catalyst and a potential, low-cost replacement of platinum for microbial biofuel cells (MBFCs). The nanorod electrocatalyst had exhibited significant improvements over Pt nanoparticles in terms of forward and backward onset potentials and peak current densities, electronic conductivity, charge transfer resistance, stability in 0.1 M phosphate buffer solution, and cost. It had also demonstrated a more stable forward peak current density at the 100th steady cycle, as well as, higher current density values up to 7,200 s. In addition, the synthesized CeO nanorods also produced ∼10 times higher exchange current density over the synthesized Pt nanoparticles. Furthermore, in a single-chamber MBFC, the CeO nanorods exhibited higher open circuit voltage (+0.80 V after 14 days), and output current (3613 mAm at +0.3 V) and power (1084 mWm ) densities in comparison to Pt nanoparticles. 2 2 2 3 -2 -2
Citation: Materials Research Express(2020), 7(1): -
Issue Date: 2020
Publisher: Institute of Physics Publishing
Keywords: cathode catalyst
cerium oxide nanorods
Microbial biofuel cell
oxygen reduction reaction
unsupported catalyst
ISSN: 20531591
Author Scopus IDs: 55820818900
Author Affiliations: Das, S., Department of Chemistry, Jadavpur University, Raja S.C. Mullick Road 188, Kolkata, 700 032, India
Dutta, K., Department of Materials Science and Engineering, Cornell University, Ithaca, 14853, United States, Advanced Research School for Technol
Corresponding Author: Dutta, K.; Department of Materials Science and Engineering, United States; email:
Appears in Collections:Journal Publications [CH]

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