Quinone-functionalised carbons as new materials for electrochemical carbon dioxide capture

Hartley, Niamh A.; Pugh, Suzi; Xu, Zhen; Leong, Daniel CY; Jaffe, Adam B.; Forse, Alexander C.

doi:10.1039/d3ta02213g

Cited by 7 publications

(8 citation statements)

References 60 publications

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“…Carbon samples CMK-3, YP-80F, and BP-1300 were synthesised by modifying our previously published procedure. 25 Briefly, A solution of activated carbon (0.1 g, 1 equiv.) and 2aminoanthraquinone (0.56 g, 0.3 equiv., 2-AAQ) was stirred in degassed acetonitrile for 16 hours.…”

Section: Synthesis Of Functionalized Carbon Samplesmentioning

confidence: 99%

“…The solvent was allowed to evaporate overnight, affording a solid. 25,30 The spectra were referenced on adamantane setting the 13 CH resonance at 28.8 ppm.…”

Section: Synthesis Of Functionalized Carbon Samplesmentioning

confidence: 99%

“…Anthraquinone functionalization of the three carbons was carried out using a diazonium radical reaction as previously reported. 25 In this process, 2-aminoanthraquinone was used to covalently attach the quinone molecules to the carbon surface upon loss of the amino group. This resulted in three functionalized carbon samples: f-CMK-3, f-BP-1300 and f-YP-80F.…”

Section: Synthesis and Characterisation Of Anthraquinone-functionaliz...mentioning

confidence: 99%

“…24 In our previous study, anthraquinones molecules were successfully attached to a mesoporous carbon network using a diazonium radical reaction and the resulting electrodes showed reversible carbon capture up to 1000 cycles, albeit with a 55% reduction in electrochemical capacity and a gradual decrease in adsorption capacity under a CO2 atmosphere. 25 A loss of grafted quinones by 65% was also observed after extended cycling, despite the covalent attachment.…”

Section: Introductionmentioning

confidence: 96%

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Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Hartley,

Xu,

Kress

et al. 2024

Preprint

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Electrochemical carbon dioxide capture is emerging as an energy-efficient alternative to traditional carbon capture technology. In particular, redox-active molecules that can capture carbon dioxide when electrochemically reduced and release carbon dioxide when electrochemically re-oxidized are under active development. To prepare a carbon capture device these molecules can be incorporated in a solid electrode in a battery-like cell. In this work we explore the scope of a recently developed method where anthraquinones are covalently attached to porous carbon supports to obtain electrodes for electrochemical carbon dioxide capture. We functionalize four different porous carbon materials with varying porosities and surface chemistries, and use gas sorption analysis and solid-state NMR spectroscopy to probe the location of the grafted anthraquinones. All four functionalized materials show electrochemically mediated capture and release of carbon dioxide and we explore the factors that determine their performance. While the anthraquinone-functionalized mesoporous carbon, f-CMK-3, showed the highest quinone loading, it showed poor quinone utilization for CO2 capture, and poor long-term cycling stability. In contrast, the predominantly microporous functionalized carbon, f-YP-80F, showed a higher quinone utilization and improved cycling stability. Finally, thermal annealing experiments were conducted to remove pre-existing functional groups on a third carbon, but this did not improve the cycling stability of the resulting anthraquinone-functionalized material. Overall our measurements suggest that the pore environments in which anthraquinones are grafted play a crucial role in determining the electrochemical CO2 capture performance. This work can guide the design of functionalized carbon electrodes for electrochemical carbon dioxide capture.

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Section: Synthesis Of Functionalized Carbon Samplesmentioning

confidence: 99%

“…The solvent was allowed to evaporate overnight, affording a solid. 25,30 The spectra were referenced on adamantane setting the 13 CH resonance at 28.8 ppm.…”

Section: Synthesis Of Functionalized Carbon Samplesmentioning

confidence: 99%

Section: Synthesis and Characterisation Of Anthraquinone-functionaliz...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Hartley,

Xu,

Kress

et al. 2024

Preprint

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“…Moreover, the ECCR devices are easy to scale up or down, and thus offering opportunities to utilize the intermittent and decentralized electricity generated from renewbles. 14,15 To our best knowledge, three main types of organic redox-active molecules (Lewis bases) have been actively investigated to date, i.e., quinone, [16][17][18][19][20][21][22][23][24] bipyridine, 25,26 and phenazine 27 . Among them, quinone is the most extensively studied owing to its mild reduction potential and moderate CO2 binding affinity.…”

Section: Introductionmentioning

confidence: 99%

Exploiting thiolate/disulfide redox couples toward large-scale electrochemical carbon dioxide capture and release

Li,

Deng,

Chen

et al. 2024

Preprint

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Reducing global carbon dioxide emissions is a critical issue that requires sustainable, energy-efficient and scalable solutions. Electrochemical carbon dioxide capture and release with redox active molecule has drawn an intense amount of interest, owing to its mild operation condition, low energy consumption and high flexibility compared with traditional CO2 capture technologies. Here, we demonstrate a series of thiolate/ disulfide redox couples, with high practical solubility and weak protonation ability, which are able to reversibly capture and release CO¬2. The mechanism of CO2 capture and release using such redox couples is elucidated via combining cyclic voltammetric and Fourier transform infrared spectroscopic measurements. Further, we show the redox performance of such materials can be significantly improved by functional group tuning and electrolyte engineering. Among them, the 4-fluorophenyl thiolate/4-fluorophenyl disulfide redox couple shows an initial CO2 capacity utilization efficiency and average release/capture efficiency of ~100% and ~90%, respectively, under simulated flue gas (20% CO2) in a flow system. Besides, it exhibits a good cycling stability against moisture. This work opens new opportunity to future works in developing thiolate/disulfide redox couples for large-scale electrochemical carbon dioxide capture and release applications.

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Electrode, Electrolyte, and Membrane Materials for Electrochemical CO₂ Capture

Sun,

Tebyetekerwa,

Zhang

et al. 2024

Advanced Energy Materials

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One of the many possible ways to capture carbon dioxide (CO2) is through electrochemical means. This is an emerging approach with various merits. It is energy efficient, utilizes renewable energy, operates under ambient conditions, provides ease for control of reaction rates, and is scalable. Additionally, it can be integrated as a plug‐and‐play module at various scales, including large industrial sources or at small scale, e.g., on vehicles, and can easily combine CO2 capture, storage, and utilization into value‐added chemicals. Various “proof‐of‐concept” electrochemical CO2 capture approaches have been demonstrated in the recent past. These are made possible with electro‐active materials that capture, separate, and concentrate CO2 in the form of electrodes, electrolytes, and membranes in devices. Herein, these materials and their working mechanisms are identified and reviewed in various electrochemical CO2 capture devices where they are utilized. Also, the current challenges and future research directions with the identified electrodes, electrolytes, and membranes are summarized to give a rational understanding and guidance for selecting and designing materials for use in electrochemical CO2 capture devices.

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Quinone-functionalised carbons as new materials for electrochemical carbon dioxide capture

Abstract: The need for cost-effective carbon dioxide capture technology is rapidly increasing. To limit the global temperature increase to 1.5 °C within the next century, the level of CO2 mitigation needs...

Cited by 7 publications

References 60 publications

Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Exploiting thiolate/disulfide redox couples toward large-scale electrochemical carbon dioxide capture and release

Electrode, Electrolyte, and Membrane Materials for Electrochemical CO₂ Capture

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Quinone-functionalised carbons as new materials for electrochemical carbon dioxide capture

Abstract: The need for cost-effective carbon dioxide capture technology is rapidly increasing. To limit the global temperature increase to 1.5 °C within the next century, the level of CO2 mitigation needs...

Cited by 7 publications

References 60 publications

Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Correlating the Structure of Quinone-Functionalized Carbons with Electrochemical CO2 Capture Performance

Exploiting thiolate/disulfide redox couples toward large-scale electrochemical carbon dioxide capture and release

Electrode, Electrolyte, and Membrane Materials for Electrochemical CO2 Capture

Contact Info

Product

Resources

About

Electrode, Electrolyte, and Membrane Materials for Electrochemical CO₂ Capture