A conjugated tetracarboxylate anode for stable and sustainable Na-ion batteries

Qin, Kaiqiang; Holguin, Kathryn; Mohammadiroudbari, Motahareh; Luo, Chao

doi:10.1039/d0cc08273b

Cited by 17 publications

(15 citation statements)

References 29 publications

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“…Until now, the redox reactions of OAMs in organic NIBs follow five kinds of mechanisms, including carbonyl (CO), imine (CN), azo (NN), thioketone/thioester (CS), and anion insertion reactions. To obtain low-reaction-potential OAMs, carboxylate compounds based on carbonyl reactions could provide redox potential below 1.0 V. − Due to the abundant and diverse nature of carboxylate compounds, their molecular structures can be manipulated to optimize their electrochemical performance as anodes in NIBs.…”

Section: Introductionmentioning

confidence: 99%

Halogenated Carboxylates as Organic Anodes for Stable and Sustainable Sodium-Ion Batteries

Huang

Callender

Qin

et al. 2022

ACS Appl. Mater. Interfaces

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Organic materials are competitive as anodes for Na-ion batteries (NIBs) due to the low cost, abundance, environmental benignity, and high sustainability. Herein, we synthesized three halogenated carboxylate-based organic anode materials to exploit the impact of halogen atoms (F, Cl, and Br) on the electrochemical performance of carboxylate anodes in NIBs. The fluorinated carboxylate anode, disodium 2, 5-difluoroterephthalate (DFTP-Na), outperforms the other carboxylate anodes with H, Cl, and Br, in terms of high specific capacity (212 mA h g–1), long cycle life (300 cycles), and high rate capability (up to 5 A g–1). As evidenced by the experimental and computational results, the two F atoms in DFTP reduce the solubility, enhance the cyclic stability, and interact with Na+ during the redox reaction, resulting in a high-capacity and stable organic anode material in NIBs. Therefore, this work proves that fluorinating carboxylate compounds is an effective approach to developing high-performance organic anodes for stable and sustainable NIBs.

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Section: Introductionmentioning

confidence: 99%

Halogenated Carboxylates as Organic Anodes for Stable and Sustainable Sodium-Ion Batteries

Huang

Callender

Qin

et al. 2022

ACS Appl. Mater. Interfaces

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“…The slope (b) values of anodic and cathodic peaks are 0.7773 and 0.7791, respectively, demonstrating that the reaction kinetics of the TBPS/NG anode is largely contributed by the surface reaction mechanism and exhibits a partial capacitive behavior. [ 55 ] In addition, GITT curves at the current density of 20 mA g −1 (Figure 3h ) indicate that the charge and discharge overpotentials are only 45 and 66 mV, respectively, further demonstrating fast kinetics of the TBPS/NG anode. [ 56 ] The reaction kinetics is also investigated by EIS (Figure 3i ).…”

Section: Resultsmentioning

confidence: 99%

A Fast‐Charging and High‐Temperature All‐Organic Rechargeable Potassium Battery

et al. 2022

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Developing fast-charging, high-temperature, and sustainable batteries is critical for the large-scale deployment of energy storage devices in electric vehicles, grid-scale electrical energy storage, and high temperature regions. Here, a transition metal-free all-organic rechargeable potassium battery (RPB) based on abundant and sustainable organic electrode materials (OEMs) and potassium resources for fast-charging and high-temperature applications is demonstrated. N-doped graphene and a 2.8 m potassium hexafluorophosphate (KPF 6 ) in diethylene glycol dimethyl ether (DEGDME) electrolyte are employed to mitigate the dissolution of OEMs, enhance the electrode conductivity, accommodate large volume change, and form stable solid electrolyte interphase in the all-organic RPB. At room temperature, the RPB delivers a high specific capacity of 188.1 mAh g −1 at 50 mA g −1 and superior cycle life of 6000 and 50000 cycles at 1 and 5 A g −1 , respectively, demonstrating an ultra-stable and fast-charging all-organic battery. The impressive performance at room temperature is extended to high temperatures, where the high-mass-loading (6.5 mg cm −2 ) all-organic RPB exhibits high-rate capability up to 2 A g −1 and a long lifetime of 500 cycles at 70-100 °C, demonstrating a superb fast-charging and high-temperature battery. The cell configuration demonstrated in this work shows great promise for practical applications of sustainable batteries at extreme conditions.

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“…In the 2425th cycle, the Na metal as counter electrode was replaced by a fresh one. (d, e) Comparison of the reversible specific capacity (d) and capacity retention (e) of PCN-350 samples and the reported organic counterparts. ,− It is worth noting that the adding conductivity for the reported organic counterparts in (b) and (d, e) ranged from 20 to 50 wt %, but for PCNs was 10 wt %.…”

Section: Resultsmentioning

confidence: 99%

“…In this contribution, 1C = 300 mA g –1 . (b) Comparison of the rate capability of PCN-350 samples and the reported organic counterparts. ,− (c) Cycling performance of the PCN-350 anode tested at 2C after three cycles at 0.2C. In the 2425th cycle, the Na metal as counter electrode was replaced by a fresh one.…”

Section: Resultsmentioning

confidence: 99%

Engineering Microstructure of a Robust Polymer Anode by Moderate Pyrolysis for High-Performance Sodium Storage

Yan

Chen

Cui

et al. 2022

ACS Appl. Mater. Interfaces

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Polymer anodes have inspired considerable research interest for Na-ion batteries (NIBs) owing to their high structural flexibility and resource sustainability but are limited by the sluggish electrode kinetics, insufficient cyclability, and inferior electronic conductivity which usually made a large fraction (20–50 wt %) of conductive carbon additive necessitated. Herein, using a polymeric carbon nitride (PCN) anode as an example, we demonstrated that a moderate pyrolysis of the polymer anode could not only reduce its optical bandgap to enhance its electronic conductivity but also tune its microstructures to facilitate Na+ transfer/storage and sustain the repeated sodiation/desodiation. When used as NIBs anode with 10 wt % conductive carbon adding for preparing the electrode film, the moderate-pyrolysis PCN can promise high specific capacity (351 mAh g–1 at 0.1C), superb rate capability (151 and 95 mAh g–1 at 10C and 20C, respectively), and ultrastable cyclability (88.5% capacity retention after 6500 cycles at 2C). This comprehensive battery performance is much better than that of the previously reported organic counterparts. Our finding opened a new avenue in designing high-performance polymer anode for Na-ion batteries.

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A conjugated tetracarboxylate anode for stable and sustainable Na-ion batteries

Abstract: A conjugated tetracarboxylate, Na4C10H2O8, shows low redox potentials (∼0.65 V), long cycle life (1000 cycles), and fast charging capability (up to 2 A g−1), demonstrating a promising organic anode for stable and sustainable Na-ion batteries.

Cited by 17 publications

References 29 publications

Halogenated Carboxylates as Organic Anodes for Stable and Sustainable Sodium-Ion Batteries

Halogenated Carboxylates as Organic Anodes for Stable and Sustainable Sodium-Ion Batteries

A Fast‐Charging and High‐Temperature All‐Organic Rechargeable Potassium Battery

Engineering Microstructure of a Robust Polymer Anode by Moderate Pyrolysis for High-Performance Sodium Storage

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