title: Solution-Processed CoFe2O4 Nanoparticles on 3D Carbon Fiber Papers for Durable Oxygen Evolution Reaction.
abstract: We report CoFe2O4 nanoparticles (NPs) synthesized using a facile hydrothermal growth and their attachment on 3D carbon fiber papers (CFPs) for efficient and durable oxygen evolution reaction (OER). The CFPs covered with CoFe2O4 NPs show orders of magnitude higher OER performance than bare CFP due to high activity of CoFe2O4 NPs, leading to a small overpotential of 378 mV to get a current density of 10 mA/cm(2). Significantly, the CoFe2O4 NPs-on-CFP electrodes exhibit remarkably long stability evaluated by continuous cycling (over 15 h) and operation with a high current density at a fixed potential (over 40 h) without any morphological change and with preservation of all materials within the electrode. Furthermore, the CoFe2O4 NPs-on-CFP electrodes also exhibit hydrogen evolution reaction (HER) performance, which is considerably higher than that of bare CFP, acting as a bifunctional electrocatalyst. The achieved results show promising potential for efficient, cost-effective, and durable hydrogen generation at large scales using earth-abundant materials and cheap fabrication processes.
authors.affiliation: †Department of Electrical and Computer Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Alireza
authors.initials: A
authors.lastname: Kargar
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Serdar
authors.initials: S
authors.lastname: Yavuz
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Tae Kyoung
authors.initials: TK
authors.lastname: Kim
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Chin-Hung
authors.initials: CH
authors.lastname: Liu
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Cihan
authors.initials: C
authors.lastname: Kuru
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Cyrus S
authors.initials: CS
authors.lastname: Rustomji
authors.affiliation: ‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Sungho
authors.initials: S
authors.lastname: Jin
authors.affiliation: †Department of Electrical and Computer Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|‡Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.|§Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
authors.forename: Prabhakar R
authors.initials: PR
authors.lastname: Bandaru
keywords: CoFe2O4; carbon fiber paper (CFP); nanoparticles (NPs); oxygen evolution reaction (OER); water splitting