The electroreduction of carbon dioxide is emerging as a promis-ing way of converting waste CO2and excess renewable energy intovaluable chemicals, chemical feedstock and/or fuels [1,2]. Hence,waste carbon dioxide captured from point sources or ambient aircould represent a sustainable carbon source, and the anthropogeniccarbon cycle could be closed [1].
There are, however, several lim-itations that need to be overcome before the technology is viablefor large-scale application. Due to complex reaction pathways withmultiple proton and electron transfers and low aqueous solubilityof CO2, high overpotentials and low current densities are generallyobtained [3–5]. One way to overcome this is to separate the overallreduction process into two reactions.
Erlend Bertheussen, Younes Abghoui, Zarko P. Jovanov, Ana-Sofia Varela, Ifan E.L. Stephens, Ib Chorkendorff
Catalysis Today
Volume 288, 15 June 2017,
Pages 54-62
10.1016/j.cattod.2017.02.029
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