【摘 要】
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It is well-known that the electrolytes can influence the electrochemical reduction of carbon dioxide (ERCO2) in aqueous media.In this work,we explore the effect
【机 构】
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Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China
论文部分内容阅读
It is well-known that the electrolytes can influence the electrochemical reduction of carbon dioxide (ERCO2) in aqueous media.In this work,we explore the effects of alkali metal cations and anions (Li+,Na+,K+,Rb+,Cs+,HCO3-,Cl-,Br-,I-) on the current density and product selectivity for the ERCO2 into formic acid (HCOOH) on the SnO2/carbon paper (SnO2/C) electrode.Results of the ERCO2 experiments show that for the cations,the promotion effects on current density and faradaic efficiencies (FEs) are in the order of Li+ ＜ Na+ ＜ K+ ＜ Cs+ ＜ Rb+.For the anions,the current density values are in the order of NaHCO3 ＜ NaCl ＜ NaBr ＜ NaI and KHCO3 ＜ KCl ≈ KI ＜ KBr,respectively,and that on the FEs for the formation of the HCOOH (FEHCOOH) is HCO3-＜ Cl-＜ Br-＜ I-.Based on this result,the effects of alkali metal cations and anions on ERCO2 are discussed.
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