Materials and system design for direct electrochemical CO₂ conversion in capture media

Abstract

Electrochemical CO2 reduction reaction (eCO2RR) has been regarded as a promising means to store renewable electricity in the form of value-added chemicals or fuels. However, most of present eCO2RR studies...

Three-dimensional porphyrinic covalent organic frameworks for highly efficient electroreduction of carbon dioxide

“…3,4 Compared with other catalytic conversion methods, the CO 2 electroreduction reaction (CO 2 RR) using renewable energy resources for electricity can convert CO 2 to various value-added chemicals under mild and clean conditions. 5–11 Compared with other products, the two-electron involved product CO that has been widely used to produce synthetic liquid fuels by the Fischer–Tropsch process may be more easily produced via the CO 2 RR. 12–15 However, the sluggish kinetics of the CO 2 RR and the associated hydrogen evolution reaction (HER) usually lead to low current density and selectivity, 16,17 which makes it difficult to meet the requirement of commercial applications.…”

The insensitive cation effect on a single atom Ni catalyst allows selective electrochemical conversion of captured CO2 in universal media

“…16,17 To overcome these drawbacks, the direct utilization of captured-CO 2 , which omits the CO 2 separation step, has been suggested as a promising manner to enhance the feasibility of CCU. 18–21…”

Energy comparison of sequential and integrated CO2 capture and electrochemical conversion

“…In the past two decades, these capture and conversion steps have separately been advanced through innovations that have led to continuously lower implementation costs and higher energy efficiencies for each process. 1 For example, CO 2 capture can be operated at an overall cost of US$50 -150 to capture one tonne of CO 2 using commercially mature amine scrubbing processes from industrial sources 2,3 . Capture processes also show the potential to operate using alkaline capture sorbents 4 at $94 -232 or solid sorbents 5,6 at about $600 to capture one tonne of CO 2 from the air.…”