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Fluorine battery additives

  • CAS:156783-96-9,Ethyl(2,2,2-trifluoroethyl)carbonate(ETFEC)
CAS:156783-96-9,Ethyl(2,2,2-trifluoroethyl)carbonate(ETFEC)

CAS:156783-96-9,Ethyl(2,2,2-trifluoroethyl)carbonate(ETFEC)

  • Specification:98%
  • Properties:Liquid
  • Package:fluorinated bottle
  • Usage:Lithium battery additives
  • Product description: CAS:156783-96-9 | Ethyl(2,2,2-trifluoroethyl)carbonate, lithium battery additive to improve cycleability and safety, and increase the ignition point of electrolyte
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Ethyl(2,2,2-trifluoroethyl)carbonate Basic information
Product Name: Ethyl(2,2,2-trifluoroethyl)carbonate
Synonyms: Ethyl(2,2,2-trifluoroethyl)carbonate;Carbonic acid, ethyl 2,2,2-trifluoroethyl ester
CAS: 156783-96-9
MF: C5H7F3O3
MW: 172.1
EINECS:
Product Categories:
Mol File: 156783-96-9.mol

Ethyl(2,2,2-trifluoroethyl)carbonate Chemical Properties
density 1.253g/ml
Safety Information


MSDS Information

Method for preparing fluorine-containing straight-chain carbonic ester lithium battery additive by using imidazole as catalyst

Current Patent Assignee: QUZHOU FURUI PHARMACEUTICAL TECH - CN116143624, 2023, A
Patent Family Members: CN116143624 A


Abstract

The invention relates to a method for preparing a fluorine-containing straight-chain carbonic ester lithium battery additive by using imidazole as a catalyst. The use amount of imidazole accounts for 5-10% of the total amount of transesterification raw materials; the target products of the ester exchange reaction are methyl trifluoroethyl carbonate, ethyl trifluoroethyl carbonate, methyl hexafluoroisopropyl carbonate and ethyl hexafluoroisopropyl carbonate; the ester exchange reaction is carried out according to the following steps in sequence: a, adding ester and alcohol in a certain proportion into a three-neck flask provided with a thermometer and a mechanical stirring device; b, adding a proper amount of imidazole into the flask, and uniformly stirring and mixing; c, after the reaction is finished, collecting all reaction products and unreacted raw materials through reduced pressure distillation to obtain a mixture containing target product ester, and evaporating and cooling residual liquid to recover imidazole; and d, distilling and purifying the mixture containing the target product ester to obtain the high-purity target product ester. The catalyst can be separated and recycled through simple treatment, and the ester exchange reaction catalyzed by the catalyst is safe, simple and convenient.

Preparation method of hexafluoroisopropyl straight-chain carbonate lithium battery additive

Current Patent Assignee: QUZHOU FURUI PHARMACEUTICAL TECH CO LTD - CN116283580, 2023, A
Patent Family Members: CN116283580 A


Abstract

The invention discloses a preparation method of a hexafluoroisopropyl straight-chain carbonate lithium battery additive, which comprises the following steps: mixing hexafluoroisopropanol or a mixture of hexafluoroisopropanol, saturated monohydric alcohol and water with triphosgene, controlling the reaction temperature to be lower than 30 DEG C under the catalysis of organic amine and the action of an acid-binding agent, and reacting for 2-3 hours to obtain the hexafluoroisopropyl straight-chain carbonate lithium battery additive. And reacting to obtain a mixed solution containing hexafluoroisopropyl straight-chain carbonate, washing with water, drying, and distilling and purifying the mixed solution containing hexafluoroisopropyl straight-chain carbonate to obtain hexafluoroisopropyl straight-chain carbonate. The method has the characteristics of safe and simple process, low energy consumption, good yield and high purity.

Isatin derivative redoxmer for electrochemical device

Current Patent Assignee: UNIVERSITY OF CHICAGO - US11715844, 2023, B2
Patent Family Members: US11715844 B2; US2022/285729 A1; US2023/327205 A1


Abstract

An electrochemical device includes a compound that is an isatin derivative. The electrochemical device may be a lithium ion battery, a sodium ion battery, or a redox flow battery, and the isatin derivative may be a bipolar redox active material.