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DOE OSTI · 1925015

Methods for carbon dioxide hydrogenation

He, Ting·Ding, Dong·Li, Chenlin
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Abstract

A method of carbon dioxide hydrogenation comprises introducing gaseous water to a positive electrode of an electrolysis cell comprising the positive electrode, a negative electrode, and a proton-conducting membrane between the positive electrode and the negative electrode. The proton-conducting membrane comprises an electrolyte material having an ionic conductivity greater than or equal to about 10-2 S/cm at one or more temperatures within a range of from about 150° C. to about 650° C. Carbon dioxide is introduced to the negative electrode of the electrolysis cell. A potential difference is applied between the positive electrode and the negative electrode of the electrolysis cell to generate hydrogen ions from the gaseous water that diffuses through the proton-conducting membrane and hydrogenates the carbon dioxide at the negative electrode. A carbon dioxide hydrogenation system is also described.

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He, Ting, Ding, Dong, Li, Chenlin. 2022-08-23. Methods for carbon dioxide hydrogenation. https://www.osti.gov/biblio/1925015

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