An experimental study of electroreduction of CO2 to HCOOH on SnO2/C in presence of alkali metal cations (Li+, Na+, K+, Rb+ and Cs+) and anions (HCO3-, Cl-, Br- and I-)

Qi Zhang; Xiaolin Shao; Jin Yi; Yuyu Liu; Jiujun Zhang

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An experimental study of electroreduction of CO₂ to HCOOH on SnO₂/C in presence of alkali metal cations (Li⁺, Na⁺, K⁺, Rb⁺ and Cs⁺) and anions (HCO₃^-, Cl^-, Br^- and I^-)

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- An experimental study of electroreduction of CO₂ to HCOOH on SnO₂/C in presence of alkali metal cations (Li⁺, Na⁺, K⁺, Rb⁺ and Cs⁺) and anions (HCO₃^-, Cl^-, Br^- and I^-)
- Chinese Journal of Chemical Engineering Vol. 28, Issue 10, Pages: 2549-2554(2020)
- Affiliations：
  
  Institute for Sustainable Energy, College of Sciences, Shanghai University,Shanghai,China,200444
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2020
- Accepted：
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摘要

Abstract

It is well-known that the electrolytes can influence the electrochemical reduction of carbon dioxide (ERCO

) in aqueous media. In this work

we explore the effects of alkali metal cations and anions (Li

HCO

) on the current density and product selectivity for the ERCO

into formic acid (HCOOH) on the SnO

/carbon paper (SnO

/C) electrode. Results of the ERCO

experiments show that for the cations

the promotion effects on current density and faradaic efficiencies (FEs) are in the order of Li

. For the anions

the current density values are in the order of NaHCO

NaCl NaBr NaI and KHCO

KCl ≈ KI KBr

respectively

and that on the FEs for the formation of the HCOOH (FE

HCOOH

) is

HCO

. Based on this result

the effects of alkali metal cations and anions on ERCO

are discussed.

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