title: CO2-free power generation on an iron group nanoalloy catalyst via selective oxidation of ethylene glycol to oxalic acid in alkaline media.
abstract: An Fe group ternary nanoalloy (NA) catalyst enabled selective electrocatalysis towards CO2-free power generation from highly deliverable ethylene glycol (EG). A solid-solution-type FeCoNi NA catalyst supported on carbon was prepared by a two-step reduction method. High-resolution electron microscopy techniques identified atomic-level mixing of constituent elements in the nanoalloy. We examined the distribution of oxidised species, including CO2, produced on the FeCoNi nanoalloy catalyst in the EG electrooxidation under alkaline conditions. The FeCoNi nanoalloy catalyst exhibited the highest selectivities toward the formation of C2 products and to oxalic acid, i.e., 99 and 60%, respectively, at 0.4 V vs. the reversible hydrogen electrode (RHE), without CO2 generation. We successfully generated power by a direct EG alkaline fuel cell employing the FeCoNi nanoalloy catalyst and a solid-oxide electrolyte with oxygen reduction ability, i.e., a completely precious-metal-free system.
authors.affiliation: 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Sadakiyo
authors.affiliation: 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Mei Lee
authors.initials: ML
authors.lastname: Ooi
authors.affiliation: 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Sho
authors.initials: S
authors.lastname: Kitano
authors.affiliation: 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Syo
authors.initials: S
authors.lastname: Matsumura
authors.affiliation: 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kato
authors.affiliation: 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate 020-8551, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Takeguchi
authors.affiliation: 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Miho
authors.initials: M
authors.lastname: Yamauchi