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AuthorPiao, Guangxia
AuthorYoon, Sun Hee
AuthorHan, Dong Suk
AuthorPark, Hyunwoong
Available date2020-08-18T08:34:15Z
Publication Date2019
Publication NameChemSusChem
ResourceScopus
ISSN18645631
URIhttp://dx.doi.org/10.1002/cssc.201902581
URIhttp://hdl.handle.net/10576/15568
AbstractFacile synthesis of efficient electrocatalysts that can selectively convert CO2 to value-added chemicals remains a challenge. Herein, the electrochemical synthesis of porous Bi dendrite electrodes and details of their activity toward CO2 conversion to formate in aqueous solutions of bicarbonate are presented. The as-synthesized multilayered, porous, dendritic Bi electrodes exhibit a faradaic efficiency (FE) of approximately 100 % for formate production. Added halides and cations significantly influence the steady-state partial current density for formate production JFM (Cl?>Br??I?; Cs+>K+>Li+). DFT calculations revealed that the reaction pathway involving the species *OCOH occurs predominantly and the presence of both Cs+ and Cl? makes the overall reaction more spontaneous. Photovoltaic-cell-assisted electrocatalysis produced formate with an FE of approximately 95 % (JFM?10 mA cm?2) at an overall solar conversion efficiency of approximately 8.5 %. The Bi electrodes maintain their activity for 360 h without a change in the surface states. - 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Languageen
PublisherWiley-VCH Verlag
Subjectbismuth
carbon dioxide fixation
electrocatalysis
electrochemistry
porous materials
TitleIon-Enhanced Conversion of CO2 into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability
TypeArticle
dc.accessType Abstract Only


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