Electrochemical CO<sub>2</sub>Capture and Conversion

Zhang, Peng; Tong, Jingjing; Huang, Kevin

doi:10.1002/9781119231059.ch5

Cited by 7 publications

(7 citation statements)

References 138 publications

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“…Examples of electrochemical hybrid capture and utilization is the electrochemical seawater battery system [176], the alkali metal-based CO 2 batteries (e.g., lithium-CO 2 batteries [177,178]) and electrochemical CO 2 capture and conversion combinations [25,[179][180][181][182][183]. The absence of pH-swings, and the lack of further development of these proposed electrochemical capture routes, categorizes these concepts beyond the scope of this review.…”

Section: Molten Carbonate Cells and Hybrid Electrochemical Capture Mementioning

confidence: 99%

Electrochemical carbon dioxide capture to close the carbon cycle

Sharifian

Wagterveld²,

Digdaya

et al. 2021

Energy Environ. Sci.

311

196

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Section: Molten Carbonate Cells and Hybrid Electrochemical Capture Mementioning

confidence: 99%

Electrochemical carbon dioxide capture to close the carbon cycle

Sharifian

Wagterveld²,

Digdaya

et al. 2021

Energy Environ. Sci.

311

196

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“…There are two basic types of high-temperature dual-phase membranes previously defined for CO 2 separation 3,10,24 : mixed oxygen-vacancy and carbonate-ion conducting (denoted as MOCC) and mixed electron and carbonate-ion conducting (denoted as MECC); Figs. 1a and 1b schematically illustrate their individual chemistry.…”

Section: Types Of Membranes Modeledmentioning

confidence: 99%

Mathematical Modeling of High-Temperature Multiphase Solid/Molten Carbonate Membranes for CO₂ Capture

Huang

Jin

2020

J. Electrochem. Soc.

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High-temperature solid/molten-carbonate composite represent an emerging class of CO2 transport membranes to capture CO2 from flue gas with advantages in flux density and selectivity over conventional solvent/sorbent- and polymer-based counterparts. While significant technical progress in these membranes has been made in the past years, a deeper fundamental understanding of CO2 transport mechanisms is still limited. Aimed to bridge this gap, we here report a theoretical study on flux performances of four types of solid/molten-carbonate CO2 transport membranes by analytical and numerical modeling. We found that analytical and numerical results are virtually identical for solids with single charge carrier. However, for mixed conducting solids, numerical methods are preferred since analytical methods cannot solve the nonlinear local concentrations of charge carriers. Application of numerical method to a new three-phase membrane containing a mixed conducting solid, a pure electron conducting solid and molten-carbonate reveals a ∼90% increase in CO2 flux compared to the two-phase (mixed conducting solid and molten-carbonate) counterpart. The models presented here are expected to provide better fundamental insights and guidance for designing next-generation high-performance CO2 transport membranes.

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“…1). 4,6,7 Over the past few decades, CO 2 conversion technologies have included photochemical, 8 electrochemical 9 and biological 10 related processes. Among them, the electrochemical reduction of CO 2 (eCO 2 RR) driven by renewable power (like wind and solar) to produce higher-value chemical products is especially desirable in terms of energy efficiency and cost because of (1) controllable electrode potentials and ambient reaction temperatures as well as pressures; (2) recycled electrolytes, minimizing overall chemical consumption; (3) reduced generation of new CO 2 sources due to electricity as the driver; and (4) easy scale-up applications.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the electrochemical reduction of CO 2 (eCO 2 RR) driven by renewable power (like wind and solar) to produce higher-value chemical products is especially desirable in terms of energy efficiency and cost because of (1) controllable electrode potentials and ambient reaction temperatures as well as pressures; (2) recycled electrolytes, minimizing overall chemical consumption; (3) reduced generation of new CO 2 sources due to electricity as the driver; and (4) easy scale-up applications. 6,11,12 Therefore, eCO 2 RR provides a promising way for generating chemical energy, which can be regarded as a form of renewable energy storage.…”

Section: Introductionmentioning

confidence: 99%