ON THE ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE AT IN SITU ELECTRODEPOSITED COPPER.

Article abstract of DOI:10.1149/1.2095972

High faradaic efficiencies and current densities for the electrochemical reduction of CO//2 to both CH//4 and C//2H//4 are reported at in situ deposited copper on glassy carbon electrodes in aqueous 0. 5M KHCO//3. At 8. 3 mA/cm**2 the cumulative yield for CH//4 and C//2H//4 can be essentially faradaic. At 25 mA/cm**2 the overall efficiency for these two products was 79%. The proposed CO//2 reduction mechanism does not appear to involve the direct electrochemical reduction of CO//2, but proceeds through the reaction of weakly adsorbed CO//2 with electrochemically generated chemisorbed hydrogen at the copper surface. Subsequent reduction of this reduced species probably leads to bridged CO groups which can be desorbed to give either carbon monoxide or reduced further to give CH//4 and C//2H//4.

Full text of DOI:10.1149/1.2095972

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2014-09-12 to IP 128.123.35.41 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).