TY - JOUR
T1 - Simple liquid-phase synthesis of cobalt carbide (Co2C) nanoparticles and their use as durable electrocatalysts
AU - Yabushita, Mizuho
AU - Neya, Atsushi
AU - Endo, Kanae
AU - Nakaya, Masafumi
AU - Kanie, Kiyoshi
AU - Muramatsu, Atsushi
N1 - Funding Information:
The second and the third authors contributed equally to this work. This work was supported by a Grant-in-Aid for Scientific Research (KAKENHI, 24360330) from the Japan Society for the Promotion of Science (JSPS). We appreciate Mr. Yuichiro Hayasaka (The Electron Microscopy Center, Tohoku University) for his support with STEM-EDS analysis.
Publisher Copyright:
©2021 The Japan Institute of Metals and Materials.
PY - 2021
Y1 - 2021
N2 - Cobalt carbide (Co2C) nanoparticles were synthesized simply in liquid phase using Co(II) acetylacetonate and oleylamine under reflux conditions. Even in the presence of carbon black XC-72, Co2C nanoparticles were formed and simultaneously deposited on the carbon surface. The thin layer consisting of cobalt (oxy)hydroxide was present on the outermost surface of the thus-prepared Co2C nanoparticles, which was confirmed by X-ray photoelectron spectroscopy, but the redox treatment using a cyclic voltammetry technique gradually removed such byproduct phase. The resulting Co2C nanoparticles supported on XC-72 exhibited high durability for the oxygen reduction reaction.
AB - Cobalt carbide (Co2C) nanoparticles were synthesized simply in liquid phase using Co(II) acetylacetonate and oleylamine under reflux conditions. Even in the presence of carbon black XC-72, Co2C nanoparticles were formed and simultaneously deposited on the carbon surface. The thin layer consisting of cobalt (oxy)hydroxide was present on the outermost surface of the thus-prepared Co2C nanoparticles, which was confirmed by X-ray photoelectron spectroscopy, but the redox treatment using a cyclic voltammetry technique gradually removed such byproduct phase. The resulting Co2C nanoparticles supported on XC-72 exhibited high durability for the oxygen reduction reaction.
KW - Cobalt carbide nanoparticles
KW - Electrode catalyst
KW - Liquid-phase synthesis
KW - Oxygen reduction reaction
KW - Wet chemistry
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U2 - 10.2320/matertrans.MT-M2021147
DO - 10.2320/matertrans.MT-M2021147
M3 - Article
AN - SCOPUS:85117945766
SN - 1345-9678
VL - 62
SP - 1632
EP - 1638
JO - Materials Transactions
JF - Materials Transactions
IS - 11
ER -