Issue 84, 2015

Electrochemical reduction of carbon dioxide to formate with a Sn cathode and an IrxSnyRuzO2/Ti anode

Abstract

The electrochemical reduction of CO2 to formate has been studied extensively, and most studies have focused on the faradaic efficiency for producing formate. However, the energy efficiency is also critical for the possible industrialization of the process, as it specifies the energy recovered in the product. Here, we report that the energy efficiency is 35.6% when a Pt electrode is used as the anode, and it can increase to 42.1% when an IrxSnyRuzO2/Ti electrode with lower overpotential for oxygen evolution reaction is used as the anode, in spite of their faradaic efficiencies for producing formate are very close (85.1% and 84.8%). When the IrxSnyRuzO2/Ti electrode coated with Nafion membrane is used as the anode, the faradaic efficiency can maintain at 79.6% through a long time electrolysis of CO2 for 500 C.

Graphical abstract: Electrochemical reduction of carbon dioxide to formate with a Sn cathode and an IrxSnyRuzO2/Ti anode

Associated articles

Article information

Article type
Paper
Submitted
11 Jul 2015
Accepted
06 Aug 2015
First published
06 Aug 2015

RSC Adv., 2015,5, 68662-68667

Author version available

Electrochemical reduction of carbon dioxide to formate with a Sn cathode and an IrxSnyRuzO2/Ti anode

R. Zhang, W. Lv, G. Li, M. A. Mezaal and L. Lei, RSC Adv., 2015, 5, 68662 DOI: 10.1039/C5RA13618K

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