Development of Direct Fluorination Technology for Application to Materials for Lithium Battery.

Kobayashi, Motoo; Inoguchi, Tetsuya; Iida, Takashi; Tanioka, Takashi; Kumase, Hiroshi; Fukai, Y.

doi:10.1002/chin.200326057

Cited by 4 publications

(5 citation statements)

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“…The direct fl uorination of EC was successfully carried out to provide 4-fl uoro-1,3-dioxolan-2-one (fl uoroethylene carbonate, FEC) as shown in Scheme 2.3 [ 20 ]. The fl uorination of EC was strongly dependent on a choice of a reaction medium and no solvent was preferred from the viewpoint of conversion.…”

Section: Fluorinated Cyclic Carbonatesmentioning

confidence: 99%

Nonaqueous Electrolytes with Advances in Solvents

Sasaki

Tanaka

et al. 2014

Modern Aspects of Electrochemistry

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Most of the liquid electrolytes used in commercial lithium-ion (Li-ion) cells are nonaqueous solutions, in which roughly 1 mol dm −3 of lithium hexafl uorophosphate (LiPF 6 ) salt is dissolved in a mixture of carbonate solvents selected from cyclic carbonates-ethylene carbonate and propylene carbonate-and linear carbonates-dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate. In Sect. 2.1, the physicochemical properties of these carbonate solvents are listed and the phase diagrams and electrolytic conductivity data of mixed carbonate solvent systems are given. However, recent market demands for Li-ion cells with higher energy, higher power, and higher safety requires new solvents to improve the performance of cells in electrolytes based on carbonate solvents only. New heteroatom-containing organic solvents including fl uorine, boron, phosphorous, and sulfur, which have been applied to lithium cells in recent years, are reviewed from the viewpoints of synthesis, physicochemical properties, and cell performance by four authors.

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Section: Fluorinated Cyclic Carbonatesmentioning

confidence: 99%

Nonaqueous Electrolytes with Advances in Solvents

Sasaki

Tanaka

et al. 2014

Modern Aspects of Electrochemistry

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“…The synthesis methods of FEC can be roughly divided into three kinds of reactions: nucleophilic substitution from ClEC, 29 direct fluorination of EC 30 and electrochemical fluorination. 31 For nucleophilic substitution from ClEC, as shown in Fig.…”

Section: Synthesis Methods Of Fecmentioning

confidence: 99%

“…Because of the acute heat release of the fluorination reaction by using F 2 , it important to reduce the released heat to avoid residual production via heat accumulation. 30 Under this circumstance, two main measures are adopted: (1) EC is diluted with another solvent (ca. FEC) to lessen the heat that appeared in the fluorination reaction.…”

Section: Synthesis Methods Of Fecmentioning

confidence: 99%

Vital roles of fluoroethylene carbonate in electrochemical energy storage devices: a review

Zheng¹,

Wu²,

Zhang³

2023

J. Mater. Chem. C

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“…Among those fluorinated carbonates as high-voltage additives, some typical examples are shown in Table 3. 210 [64] 4.1 [64] 1.50 cis-DiFEC 311810-76-1 124 Liquid 7.8 [64] 128.7 [64] 2.5 [64] 1. ethylene carbonates [75] with hydrophobic and lipophobic behaviors was synthesized and investigated as additives in Gr‖Li1.2Ni0.15Mn0.55Co0.2O2 full cells. It was found that the full cell with the 0.5 wt.% 4-(perfluorooctyl)-1,3-dioxolan-2-one (PFO-EC, Table 3) cycled between 2.2 and 4.6 V displayed an improved capacity retention and lower impedance rise, which might be attributed to its stable film on both electrodes.…”

Section: Fluorinated Carbonates Additivesmentioning

confidence: 99%