Advancing Electrolytes Towards Stable Organic Batteries

Liang, Yanliang; Yao, Yan

doi:10.21127/yaoyigc20170016

Cited by 9 publications

(13 citation statements)

References 37 publications

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“…[1][2][3][4][5][6] However, quinone cathodes are easily soluble in organic solvent-based electrolyte (e.g., carbonate and ether solvents), incurring poor cycle life, low Coulombic efficiency, and unfavorable shuttling problems. [7][8][9] Strategies to surmount these issues include molecular polymerization, [10][11][12] chemical modification, [13][14][15] porous carbon anchoring, 16,17 and using liquid-free electrolyte. [18][19][20] Nonetheless, polymerization, chemical modification, and carbon anchoring require complex procedures and largely decrease the deliverable capacity because of an increment of inactive groups.…”

Section: Introductionmentioning

confidence: 99%

Combining Quinone Cathode and Ionic Liquid Electrolyte for Organic Sodium-Ion Batteries

Wang

Shang

Yang

et al. 2019

Chem

107

109

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Coupling quinone cathode with ionic liquid electrolyte is demonstrated to build high-energy and long-life sodium-ion batteries. Computational and spectroscopic studies reveal that the inhibitory effect of ionic liquid on dissolution of quinone correlates with the strong polarity, weak electron donor ability, and low interaction energy. The calix[4]quinone and 5,7,12,14-pentacenetetrone cathodes exhibit significantly improved cycling performance in N-methyl-N-propylpyrrolidinium bis(trifluoromethanesulfonyl)amide than in ether electrolyte. These results would enlighten the design and application of ionic liquid and quinones for organic batteries. HIGHLIGHTSA facile strategy is proposed to suppress the dissolution of quinone electrodes Inhibitory effect of ILs correlates to polarity, donor number, and binding energy [PY13][TFSI] markedly inhibits quinone dissolution C4Q and PT cathodes exhibit better capacity retention in ILs than in ether Wang et al., Chem 5, 364-375 February 14, SUMMARYQuinone-based sodium-ion batteries (SIBs) are highly desirable electrochemical devices with high capacity and low cost but suffer from poor cycle life and low practical energy because of quinone dissolution in aprotic electrolyte. Herein, we report a facile strategy of using ionic liquid (IL) to tackle the dissolution of quinone electrodes. The inhibitory effect of ILs on quinone dissolution correlates with their polarity, donor number, and interaction energy, as revealed by combined density functional theory and spectroscopy studies. Particularly, in N-methyl-N-propylpyrrolidinium bis(trifluoromethanesulfonyl)amide ([PY13] [TFSI]) electrolyte with weak donor ability and large polarity, calix[4]quinone cathode exhibits high capacity (>400 mAh g À1 ) and superior capacity retention ($99.7% at 130 mA g À1 for 300 cycles), significantly outperforming that in etherbased electrolyte. Moreover, the remarkable cyclability and considerable rate capability of 5,7,12,14-pentacenetetrone in [PY13][TFSI] render it a promising sodium-storage material. This work would promote the development of highperformance SIBs with quinone electrodes and IL electrolyte.

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Section: Introductionmentioning

confidence: 99%

Combining Quinone Cathode and Ionic Liquid Electrolyte for Organic Sodium-Ion Batteries

Wang

Shang

Yang

et al. 2019

Chem

107

109

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“…Because most of these carbonates cannot fulfill all properties required for LIB technology, such as low viscosity, high dielectric constant, and solid/electrolyte interphase (SEI)‐forming ability, mixtures of cyclic and linear carbonates are thus applied . Therefore, a mixture of EC (which provides a high dielectric constant, but suffers from high viscosity) and DMC (with low viscosity, but a lack of a sufficient dielectric constant) in a ratio of 1:1 is the state‐of‐the‐art solvent for LIBs, and therefore, for organic redox materials . However, these solvents suffer from safety problems because they are volatile and flammable …”

Section: Electrolytes For Redox Organic Electrodesmentioning

confidence: 99%

“…The dissolution of organic active materials into the organic‐solvent‐based electrolyte of the battery system is a well‐known drawback and leads to reduced cycle life, especially if small molecules, such as carbonyls, are exploited as energy‐storage materials . Several approaches to reduce this dissolution have been proposed, such as cross‐linking, attachment of side groups that change the polarity of the active materials, and polymerization . However, these attempts lead to an increase in the molar mass of the active materials used, and therefore, a decrease in the gravimetric capacity.…”

Section: Electrolytes For Redox Organic Electrodesmentioning

confidence: 99%

“…However, these attempts lead to an increase in the molar mass of the active materials used, and therefore, a decrease in the gravimetric capacity. Another approach is to use concentrated electrolytes, which bear high concentrations of conducting salts (>1 m ); these have several advantages . 1) The increased salt concentration in the electrolyte could suppress the ability of the solvent used to dissolve organic active materials of the electrodes.…”

Section: Electrolytes For Redox Organic Electrodesmentioning

confidence: 99%

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A Comparative Review of Electrolytes for Organic‐Material‐Based Energy‐Storage Devices Employing Solid Electrodes and Redox Fluids

et al. 2020

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Figure 8. Voltage excursion of PTMA during 11 daysofs elf-discharge tests in 1, 2a nd 3 m Py 14 BF 4 in PC. 1 m losesa ll chargea fter 5days, 2 m after 9days, 3 m is able to deliver residualcharge after 11 daysofs elf-discharge. Figure 9. a) The formation of aliquid mixture of 4-methoxy-TEMPOa nd LiTFSI (MTLT; 1:1) at room temperature.b )V oltage profilesa nd cycling stability of as tatic cell with ac atholyte consisting of MTLT + 17 wt %H 2 Ov ersus aLia node. c) The corresponding flow cell setup and charge/discharge behavior.Reproduced from Ref. [102]with permission. Copyright 2015, Wiley.Figure 10. a) ESW as af unction of the temperature of 10 m [BMIm]Cl/H 2 O supporting electrolyte. b) Redox flow cell tests at À32 and À20 8Cbyu sing Ni phthalocyanineanolyte and FeCl 2 catholyte. CE = coulombic efficiency, VE = voltage efficiency, EE = energye fficiency.Reproducedf rom Ref. [121] with permission.

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“…The state‐of‐the art LIB electrolyte is a mixture of EC and DMC in a ratio of 1 : 1 containing 1 M LiPF 6 . In this mixture, EC provides a high dielectric constant while DMC assures a low viscosity of the electrolytic solution …”

Section: Electrolytes For Organic Electrode‐based Devicesmentioning

confidence: 99%

A Critical Analysis about the Underestimated Role of the Electrolyte in Batteries Based on Organic Materials

Gerlach

Balducci

2020

ChemElectroChem

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Electrochemical energy storage devices based on organic materials such as polymers and organic molecules (PORMs) are nowadays regarded with increasing attention. The interest on these systems is related to their promising electrochemical performance, their low cost and their high sustainability. In the last years, several works focused on the development of active materials suitable for these systems, while much less studies have been dedicated to the electrolytes. The aim of this short review is to critically analyze these latter results, and to identify the main aspects that should be addressed in the future. Since the electrolyte is a key component of any energy storage devices, this analysis appears of particular importance for the realization of the next generation of PORM‐based devices.

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Advancing Electrolytes Towards Stable Organic Batteries

Cited by 9 publications

References 37 publications

Combining Quinone Cathode and Ionic Liquid Electrolyte for Organic Sodium-Ion Batteries

Combining Quinone Cathode and Ionic Liquid Electrolyte for Organic Sodium-Ion Batteries

A Comparative Review of Electrolytes for Organic‐Material‐Based Energy‐Storage Devices Employing Solid Electrodes and Redox Fluids

A Critical Analysis about the Underestimated Role of the Electrolyte in Batteries Based on Organic Materials

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