Alkali Metal Ion Storage of Quinone Molecules Grafted on Single-Walled Carbon Nanotubes at Low Temperature

Li, Canghao; Nakamura, Motoumi; Inayama, Shunya; Ishii, Yosuke; Kawasaki, Shigeo; Al-zubaidi, Ayar; Sagisaka, Kento; Hattori, Yoshiyuki

doi:10.1021/acsomega.8b02844

Cited by 9 publications

(4 citation statements)

References 41 publications

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“…Similarly, 9,10-phenanthrenequinone (PhQ) has also been grafted onto the single-walled carbon nanotube (SWCNT) sample by a diazo-coupling reaction. Moreover, the obtained PhQ-grafted SWCNTs as LIB and SIB electrodes present excellent electrochemical performances at low temperature (0 °C) . Via a multistep grafting technique, a quinone compound, 2,3-dicyano- p -benzoquinone (DCBQ), has been successfully functionalized onto the carbon nanotubes (CNTs) (Figure e) .…”

Section: Redox-active Feature For Electrodementioning

confidence: 98%

“…Moreover, the obtained PhQ-grafted SWCNTs as LIB and SIB electrodes present excellent electrochemical performances at low temperature (0 °C). 179 Via a multistep grafting technique, a quinone compound, 2,3-dicyano-p-benzoquinone (DCBQ), has been successfully functionalized onto the carbon nanotubes (CNTs) (Figure 7e). 180 As shown in Figure 7f and Figure 7g, resulting from the excellent redox activity, the CNTs-DCBQ electrode exhibits the most outstanding electrochemical properties among the CNT-based materials in LIBs, delivering a large reversible capacity of 170 mAh g −1 based on the total weight of the electrode loading.…”

Section: Carbon Materials Withmentioning

confidence: 99%

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Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

Zou,

Deng,

Silvester

et al. 2024

ACS Nano

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On the basis of the sustainable concept, organic compounds and carbon materials both mainly composed of light C element have been regarded as powerful candidates for advanced electrochemical energy storage (EES) systems, due to theie merits of low cost, eco-friendliness, renewability, and structural versatility. It is investigated that the carbonyl functionality as the most common constituent part serves a crucial role, which manifests respective different mechanisms in the various aspects of EES systems. Notably, a systematical review about the concept and progress for carbonyl chemistry is beneficial for ensuring in-depth comprehending of carbonyl functionality. Hence, a comprehensive review about carbonyl chemistry has been summarized based on state-of-the-art developments. Moreover, the working principles and fundamental properties of the carbonyl unit have been discussed, which has been generalized in three aspects, including redox activity, the interaction effect, and compensation characteristic. Meanwhile, the pivotal characterization technologies have also been illustrated for purposefully studying the related structure, redox mechanism, and electrochemical performance to profitably understand the carbonyl chemistry. Finally, the current challenges and promising directions are concluded, aiming to afford significant guidance for the optimal utilization of carbonyl moiety and propel practicality in EES systems.

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Section: Redox-active Feature For Electrodementioning

confidence: 98%

Section: Carbon Materials Withmentioning

confidence: 99%

Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

Zou,

Deng,

Silvester

et al. 2024

ACS Nano

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“…To date, a number of strategies have been explored to suppress the dissolution of organic small molecule materials, including the introduction of metal ions to form coordination bonds between molecules (salt formation), [ 14 ] the polymerization of the small molecules, [ 15 ] the immobilization through carbonaceous host materials, [ 16 ] and employment of surface coating. [ 17,18 ] However, the long‐cycle performance was still unsatisfactory even when the above strategies were employed.…”

Section: Introductionmentioning

confidence: 99%

Stable Long Cycling of Small Molecular Organic Acid Electrode Materials Enabled by Nonflammable Eutectic Electrolyte

Liang

Cao

et al. 2021

Small

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Small molecule organic acids as electrode materials possess the advantages of high theoretical capacity, low cost, and good processability. However, these electrode materials suffer from poor cycling stability due to the inevitable dissolution of organic molecules in the electrolytes. Here, a eutectic mixture of lithium bis(trifluoromethanesulfonyl)imide and N‐methylamine is employed as a eutectic electrolyte in Li‐ion batteries with small molecule organic acids as electrodes. To enhance the cycling stability of the electrolyte, fluoroethylene carbonate is used as an additive. The electrolyte exhibits nonflammability, high ionic conductivity, and good electrochemical stability. Molecular dynamics simulations and density functional theory are performed to further investigate the solvation chemistry of the eutectic electrolyte. The well‐designed eutectic electrolyte inhibits the dissolution of terephthalic acid effectively and displays superior performance with a capacity retention of ≈84% after 2000 cycles at a high current density of 1 A g−1. It also enables stable cycling of more than 900 cycles at a high current density of 2 A g−1 at 60 °C. This study provides a strategy to enhance the cycling stability and safety of Li‐ion batteries with organic electrode materials.

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“…Unfortunately, unexpectedly weak reduction processes and negligible electron mobility were observed depriving the desired study of the resulting copolymer. Our attention then turned to nanotube dispersion as recent reports have demonstrated that interactions between redox organic molecules and carbon nanotubes can increase the conductivity of the organic materials. ,, It can also facilitate redox reactions by π–π interactions with the nanotubes in addition to overcoming the inherent dissolution problem. − In this study, single-walled carbon nanotubes (SWCNTs) were dispersed with the copolymer using the conjugated polymer-assisted dispersion method . High concentration dispersion was filtered to obtain a freestanding film that was used directly as a cathode.…”

Section: Introductionmentioning

confidence: 99%

Pyrene Diimide Based π-Conjugated Copolymer and Single-Walled Carbon Nanotube Composites for Lithium-Ion Batteries

et al. 2019

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A π-conjugated copolymer based on a pyrene diimide unit (P(PyDI-T2)) was synthesized using the Suzuki−Miyaura crosscoupling reaction between 4,5,9,10-pyrene diimide-2,7-diboronic ester and 2,2′-dibromo-5,5′-bithiophene for use as an active material in a Li-ion battery. Usually, diimide molecules are known to demonstrate reversible redox processes with a maximum of a two-electron insertion per unit. The unique structure of pyrene diimide, consisting of a pyrene core bearing two imide functions lying on formal double bonds, was anticipated to potentially demonstrate reversible redox processes involving four electrons per unit via aromatic stabilization. Also, the 2-and 7-positions are much less sterically hindered than similar relative positions in other diimides and hence should permit good electron mobility in the resulting polymer. Unfortunately, we were unable to observe any reduction phenomena in a half-cell (with a Li anode), likely due to negligible electronic conductivity. Subsequently, P(PyDI-T2) was blended with SWCNTs for dispersion in order to enhance both conductivity and surface area. High concentration dispersion was filtered to obtain a freestanding film of P(PyDI-T2)/SWCNT, with an intrinsic conductivity of 30 S/cm, which was used directly as a cathode in the half-cell. Reversible redox pointing to two one-electron phenomena was observed with 40.6 mA h/g at a galvanostatic slow rate of C/50 with a high mass loading of 3.2 mg/cm 2 . Density functional theory calculations were performed on pyrene diimide units to elucidate poor mobility and to compare Gibbs free energies for the second reduction of each site.

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Alkali Metal Ion Storage of Quinone Molecules Grafted on Single-Walled Carbon Nanotubes at Low Temperature

Cited by 9 publications

References 41 publications

Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

Stable Long Cycling of Small Molecular Organic Acid Electrode Materials Enabled by Nonflammable Eutectic Electrolyte

Pyrene Diimide Based π-Conjugated Copolymer and Single-Walled Carbon Nanotube Composites for Lithium-Ion Batteries

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