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Contributors to Enhanced CO 2 Electroreduction Activity and Stability in a Nanostructured Au Electrocatalyst
Author(s) -
Kim Haeri,
Jeon Hyo Sang,
Jee Michael Shincheon,
Nursanto Eduardus Budi,
Singh Jitendra Pal,
Chae Keunhwa,
Hwang Yun Jeong,
Min Byoung Koun
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201600228
Subject(s) - electrocatalyst , catalysis , nanostructure , x ray photoelectron spectroscopy , electrochemistry , materials science , chemical engineering , nanotechnology , electrode , chemistry , organic chemistry , engineering
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 CO 2 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 CO 2 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 CO 2 reduction reaction.