A phenazine-based high-capacity and high-stability electrochemical CO2 capture cell with coupled electricity storage

Pang, Shuai; Jin, Shijian; Yang, Fengcun; Alberts, Maia; Li, Lu; Xi, Dawei; Gordon, Roy G.; Wang, Pan; Aziz, Michael J.; Ji, Yunlong

doi:10.1038/s41560-023-01347-z

Cited by 33 publications

(34 citation statements)

References 51 publications

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“…Therefore, it is suggested that the capacity attenuation here is mainly caused by the increase in membrane resistance and polarization . The electrochemical performances of K 4 Fe(CN) 6 ||DBEP ARFB are compared with previous ARFBs based on phenazine derivatives in Figure h and Table S2, suggesting the superior efficiencies and cycling stability of ARFBs based on DBEP. − , …”

Section: Resultsmentioning

confidence: 90%

“…32 The electrochemical performances of K 4 Fe(CN) 6 ||DBEP ARFB are compared with previous ARFBs based on phenazine derivatives in Figure 4h and Table S2, suggesting the superior efficiencies and cycling stability of ARFBs based on DBEP. [19][20][21][22]33 To further elucidate the redox behavior of the phenazine core during cycling processes, in situ UV−vis absorption analyses were conducted to characterize the DAEP and DBEP negolytes of the K 4 Fe(CN) 6 ||DAEP and K 4 Fe(CN) 6 ||DBEP ARFBs at various charged/discharged states. Prior to charging, the DBEP in 1.0 M KOH negolyte exhibited a red color, which transformed into a green color upon charging to its reduced form.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Screening Ultra-Stable (Phenazine)dioxyalkanocic Acids with Varied Water-Solubilizing Chain Lengths for High-Capacity Aqueous Redox Flow Batteries

Liu,

Zhang,

et al. 2024

J. Am. Chem. Soc.

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Aqueous redox flow batteries (ARFBs) hold great potential for large-scale energy storage. Recently, research on aqueous flow batteries has shifted toward water-soluble organic molecules with redox capabilities to reduce the use of mineral resources. The chemical and electrochemical stabilities of organic compounds are heavily influenced by their functional groups and reaction sites. In this study, we present a low-cost synthesis of the O-alkyl-carboxylate-functionalized derivatives of 2,3-dihydroxyphenazine, namely, phenazine-(2,3-diyl) dioxy dibutyric acid (DBEP) and phenazine-(2,3-diyl)dioxy diacetic acid (DAEP), which serve as negolytes and exhibit good reversibility and high redox kinetics. The evidence is provided to clarify the capacity degradation mechanisms of DAEP and DBEP by a series of comprehensive characterizations. Similar to anthraquinones functionalized with alkyl chains, the main degradation mechanism of DAEP modified with acetic acid is due to side chain loss. Longer side chains are more stable and can withstand longterm electrochemical reactions. DBEP modified with butyric acid exhibits superior chemical and electrochemical stability. Our results demonstrate that rational molecular design and suitable membranes, such as the alkaline ARFBs based on DBEP negolyte, potassium ferrocyanide (K 4 Fe(CN) 6 ) posolyte, and custom sulfonated poly(ether ether ketone) membrane, can deliver a high opencircuit voltage of 1.17 V and high capacity retention of 99.997% per cycle for over 1000 cycles at 50 mA cm −2 . This study highlights the importance of not only considering the modification position of the molecules but also focusing on the influence of various side chains on the redox core's stability toward sustainable grid-scale energy storage applications.

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Section: Resultsmentioning

confidence: 90%

Section: ■ Results and Discussionmentioning

confidence: 99%

Screening Ultra-Stable (Phenazine)dioxyalkanocic Acids with Varied Water-Solubilizing Chain Lengths for High-Capacity Aqueous Redox Flow Batteries

Liu,

Zhang,

et al. 2024

J. Am. Chem. Soc.

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“…The overuse of nonrenewable fossil resources such as coal, oil and natural gas greatly increases CO 2 emission and the accompanying greenhouse effect, and thus it is necessary to develop renewable resources and CO 2 capture and utilization technologies. 1–7 For this, many chemists and materials scientists focus on the development of new renewable resources (wind, light, electricity, etc. ) and new materials such as nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Recent progress of heterogeneous catalysts for transfer hydrogenation under the background of carbon neutrality

Chen,

Ma,

Gong

et al. 2024

Nanoscale

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“…While this Account primarily highlights our recent work, we acknowledge and appreciate the remarkable contributions of other researchers in this field. For instance, Aziz, Kwabi, and co-workers have made significant strides in developing phenazine compounds for electrochemical pH swing carbon capture. , Additionally, Atwater, Eisaman, , and Vermaas have independently explored alternative approaches utilizing bipolar membrane electrodialysis (BPMED) systems. Their valuable research has contributed to the diverse landscape of pH swings for electrochemical carbon capture, distinct from our own investigations, enriching the possibilities for mitigating atmospheric CO 2 levels.…”

Section: Introductionmentioning

confidence: 99%

Redox-Mediated pH Swing Systems for Electrochemical Carbon Capture

Seo,

Nitzsche,

Hatton

2023

Acc. Chem. Res.

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carbon capture by exploitation of a redox-active amine in an aqueous solution. • Seo, H.; Hatton, T. A. Electrochemical Direct Air Capture of CO 2 Using Neutral Red as Reversible Redox-Active Material. Nat. Commun. 2023, 14, 313. 2 This organic redox-active material shows an efficient electrochemical pH swing in a range of 7−12 with a great stability under ambient air. Electrochemical direct air capture was demonstrated. • Rahimi, M.; Catalini, G.; Puccini, M.; Hatton, T. A. Bench-Scale Demonstration of CO 2 Capture with an Electrochemically Driven Proton Concentration Process. RSC Adv. 2020, 10, 16832−16843. 3 This inorganic redox-active material demonstrated an electrochemical pH swing in the presence of a bicarbonate buffer system as an absorbent for treating simulated flue gas.

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A phenazine-based high-capacity and high-stability electrochemical CO2 capture cell with coupled electricity storage

Cited by 33 publications

References 51 publications

Screening Ultra-Stable (Phenazine)dioxyalkanocic Acids with Varied Water-Solubilizing Chain Lengths for High-Capacity Aqueous Redox Flow Batteries

Screening Ultra-Stable (Phenazine)dioxyalkanocic Acids with Varied Water-Solubilizing Chain Lengths for High-Capacity Aqueous Redox Flow Batteries

Recent progress of heterogeneous catalysts for transfer hydrogenation under the background of carbon neutrality

Redox-Mediated pH Swing Systems for Electrochemical Carbon Capture

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