학술논문
Nanostructured Au Electrode with 100 h Stability for Solar-Driven Electrochemical Reduction of Carbon Dioxide to Carbon Monoxide.
Document Type
Academic Journal
Author
Bae H; Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Seong C; School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Burungale V; School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Seol M; McScience Inc., Yeongtong-gu, Suwon 16690, Korea.; Yoon CO; McScience Inc., Yeongtong-gu, Suwon 16690, Korea.; Kang SH; Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Department of Chemistry Education, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Jung WG; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Gwangju 61005, Korea.; Kim BJ; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Gwangju 61005, Korea.; Ha JS; Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.; Energy Convergence Core Facility, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 101691658 Publication Model: eCollection Cited Medium: Internet ISSN: 2470-1343 (Electronic) Linking ISSN: 24701343 NLM ISO Abbreviation: ACS Omega Subsets: PubMed not MEDLINE
Subject
Language
English
Abstract
Solar-to-chemical energy conversion is a potential alternative to fossil fuels. A promising approach is the electrochemical (EC) reduction of CO 2 to value-added chemicals, particularly hydrocarbons. Here, we report on the selective EC reduction of CO 2 to CO on a porous Au nanostructure (pAu) cathode in 0.1 M KHCO 3 . The pAu cathode anodized at 2.6 V exhibited maximum Faradaic efficiency (FE) for conversion of CO 2 to CO (up to 100% at -0.75 V vs reversible hydrogen electrode (RHE)). Furthermore, commercial Si photovoltaic cells were combined with EC systems (PV-EC) consisting of pAu cathodes and IrO 2 anodes. The triple-junction cell and EC system resulted in a solar-to-CO conversion efficiency (SCE) of 5.3% under 1 sun illumination and was operated for 100 h. This study provides a PV-EC CO 2 reduction system for CO production and indicates the potential of the PV-EC system for the EC reduction of CO 2 to value-added chemicals.
Competing Interests: The authors declare no competing financial interest.
(© 2022 The Authors. Published by American Chemical Society.)
Competing Interests: The authors declare no competing financial interest.
(© 2022 The Authors. Published by American Chemical Society.)