Application of nonflammable electrolyte with room temperature ionic liquids (RTILs) for lithium-ion cells

Nakagawa, Hiroe; Fujino, Yukiko; Kozono, Suguru; Katayama, Yoshihiro; Nukuda, Toshiyuki; Sakaebe, Hikarí; Matsumoto, Hajime; Tatsumi, Kuniaki

doi:10.1016/j.jpowsour.2007.06.133

Cited by 162 publications

(121 citation statements)

References 11 publications

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“…In the present case of the ternary electrolyte of PC/NaClO 4 /DEMETFSI, the compatibility with negative electrode may contradict to the non-flammability. 31 In terms of practical usage, the electrolyte containing 50% of DEMETFSI appears to be attractive among this series due to somewhat improved non-flammability, compatibility with hard carbon electrode, and relatively high conductivity.…”

Section: ¹1mentioning

confidence: 99%

Influence of Ionic Liquid Species in Non-Aqueous Electrolyte on Sodium Insertion into Hard Carbon

et al. 2012

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The electrochemical insertion and de-insertion of sodium ion in hard carbon has been monitored in electrolytes consisting of sodium perchlorate (NaClO 4 ), propylene carbonate (PC), and an ionic liquid N,N-diethyl-N-methoxyethyl ammonium bis(trifluoromethane sulfonyl)imide (DEMETFSI). Voltammetric observation revealed that the reversible sodium insertion is inhibited by the content of DEMETFSI in the electrolyte. The reversible signs of sodium insertion become obvious when the volumetric content of DEMETFSI was 70%. The inhibition effect for sodium insertion by DEMETFSI is somewhat in relation to the change in coordination with sodium ion in electrolyte.

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Section: ¹1mentioning

confidence: 99%

Influence of Ionic Liquid Species in Non-Aqueous Electrolyte on Sodium Insertion into Hard Carbon

et al. 2012

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“…In this comprehensive paper, the results obtained for the electrochemical performance of lithium-ion cells and thermal stability of the electrolytes with (1) mixtures of neat ionic liquids and lithium salts 17 and (2) ternary mixtures of ionic liquids, lithium salts, and organic solvents 18 are discussed. In the first section, EMI-BF 4 was selected as the ionic liquid because of its low viscosity and low melting point.…”

Section: Introductionmentioning

confidence: 99%

Electrolytes Containing Ionic Liquids for Improved Safety of Lithium-ion Batteries

Nakagawa

2015

Electrochemistry

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Ionic liquids are of interest for application in electrolytes of lithium-ion batteries, because of their non-flammability, thermal stability, and non-volatility. Electrolytes containing ionic liquids have therefore been used to improve the safety of lithium-ion cells. Both the liquid electrolyte and the gelled electrolyte, which was composed of 1-ethyl-3-methyl-imidazolium tetrafluoroborate and LiBF 4 , were shown to have good thermal and electrochemical stability and to be applicable for use in lithium-ion cells with Li[Li 1/3 Ti 5/3 ]O 4 as the negative electrode active material. Electrolytes containing a mixture of organic solvents and N-methyl-N-propylpiperidinium bis (trifluoromethanesulfonyl) imide were also found to exhibit good discharge performance for use in lithium-ion cells and nonflammability for use as an electrolyte. Furthermore, it was found that graphite was able to perform in the electrolyte containing the ionic liquid.

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“…[1][2][3] To date a number of ionic liquids have been proposed and investigated for the use in electrolyte component. 2 According to great development during this decade, 1-ethyl-3-methyl imidazolium bis(fluorosulfonyl)amide (EMIFSA) appear to be attractive for practical viewpoint.…”

Section: Introductionmentioning

confidence: 99%

Electrode Behavior of Iron Oxide/Carbon Nanotube Composite in Ionic Liquid Electrolyte

et al. 2015

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Composite electrode of iron oxide Fe 2 O 3 and carbon nanotube has been prepared for the negative electrode of lithium batteries with ionic liquid electrolyte. The composite containing 29 wt% of Fe 2 O 3 exhibits as large as 300 mAh g −1 of specific capacity in the electrolyte based on 1-ethyl-3-methyl imidazolium bis(fluorosulfonyl)amide (EMIFSA) as well as in a conventional alkylcarbonate electrolyte. When the loading of Fe 2 O 3 is at as low extent as 29 wt%, cross-linking morphology created by carbon nanotube substrate provides nano-spaces in the composite and assures mass transfer beneath electrode and thus rate capability even in viscous ionic liquid electrolyte.

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Application of nonflammable electrolyte with room temperature ionic liquids (RTILs) for lithium-ion cells

Cited by 162 publications

References 11 publications

Influence of Ionic Liquid Species in Non-Aqueous Electrolyte on Sodium Insertion into Hard Carbon

Influence of Ionic Liquid Species in Non-Aqueous Electrolyte on Sodium Insertion into Hard Carbon

Electrolytes Containing Ionic Liquids for Improved Safety of Lithium-ion Batteries

Electrode Behavior of Iron Oxide/Carbon Nanotube Composite in Ionic Liquid Electrolyte

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