2022
DOI: 10.1038/s41467-022-29791-7
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Low energy carbon capture via electrochemically induced pH swing with electrochemical rebalancing

Abstract: We demonstrate a carbon capture system based on pH swing cycles driven through proton-coupled electron transfer of sodium (3,3′-(phenazine-2,3-diylbis(oxy))bis(propane-1-sulfonate)) (DSPZ) molecules. Electrochemical reduction of DSPZ causes an increase of hydroxide concentration, which absorbs CO2; subsequent electrochemical oxidation of the reduced DSPZ consumes the hydroxide, causing CO2 outgassing. The measured electrical work of separating CO2 from a binary mixture with N2, at CO2 inlet partial pressures r… Show more

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Cited by 57 publications
(68 citation statements)
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“…The NaHCO 3 can represent spent NaOH sorbent from point-source capture and DAC or the DIC in seawater. (G) pH swing EMCC with organic PCET molecules ( Huynh et al., 2016 ; Jin et al., 2022 ; Seo et al., 2022 ). (H) pH swing EMCC with proton (de)intercalation inorganic electrodes ( Rahimi et al., 2020a , 2020b ).…”
Section: Emcc Mechanisms Compatible With Continuous Flow Processesmentioning
confidence: 99%
See 4 more Smart Citations
“…The NaHCO 3 can represent spent NaOH sorbent from point-source capture and DAC or the DIC in seawater. (G) pH swing EMCC with organic PCET molecules ( Huynh et al., 2016 ; Jin et al., 2022 ; Seo et al., 2022 ). (H) pH swing EMCC with proton (de)intercalation inorganic electrodes ( Rahimi et al., 2020a , 2020b ).…”
Section: Emcc Mechanisms Compatible With Continuous Flow Processesmentioning
confidence: 99%
“… (G) pH swing EMCC with organic PCET molecules ( Huynh et al., 2016 ; Jin et al., 2022 ; Seo et al., 2022 ). (H) pH swing EMCC with proton (de)intercalation inorganic electrodes ( Rahimi et al., 2020a , 2020b ).…”
Section: Emcc Mechanisms Compatible With Continuous Flow Processesmentioning
confidence: 99%
See 3 more Smart Citations