title: Contributors to Enhanced CO2 Electroreduction Activity and Stability in a Nanostructured Au Electrocatalyst.
abstract: The formation of a nanostructure is a popular strategy for catalyst applications because it can generate new surfaces that can significantly improve the catalytic activity and durability of the catalysts. However, the increase in the surface area resulting from nanostructuring does not fully explain the substantial improvement in the catalytic properties of the CO2 electroreduction reaction, and the underlying mechanisms have not yet been fully understood. Here, based on a combination of extended X-ray absorption fine structure analysis, X-ray photoelectron spectroscopy, and Kelvin probe force microscopy, we observed a contracted Au-Au bond length and low work function with the nanostructured Au surface that had enhanced catalytic activity for electrochemical CO2 reduction. The results may improve the understanding of the enhanced stability of the nanostructured Au electrode based on the resistance of cation adhesion during the CO2 reduction reaction.
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.
authors.forename: Haeri
authors.initials: H
authors.lastname: Kim
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.|Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea.
authors.forename: Hyo Sang
authors.initials: HS
authors.lastname: Jeon
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.
authors.forename: Michael Shincheon
authors.initials: MS
authors.lastname: Jee
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.|Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea.
authors.forename: Eduardus Budi
authors.initials: EB
authors.lastname: Nursanto
authors.affiliation: Nano Material Analysis Center, Korean Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.
authors.forename: Jitendra Pal
authors.initials: JP
authors.lastname: Singh
authors.affiliation: Nano Material Analysis Center, Korean Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea.
authors.forename: Keunhwa
authors.initials: K
authors.lastname: Chae
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea. yjhwang@kist.re.kr.|Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea. yjhwang@kist.re.kr.
authors.forename: Yun Jeong
authors.initials: YJ
authors.lastname: Hwang
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea. bkmin@kist.re.kr.|Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea. bkmin@kist.re.kr.|Green School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea. bkmin@kist.re.kr.
authors.forename: Byoung Koun
authors.initials: BK
authors.lastname: Min
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D013499:Surface Properties
chemical_list: D002245:Carbon Dioxide; D006046:Gold
keywords: Au; X-ray photoelectron spectroscopy; carbon dioxide; electrocatalyst; electroreduction