公开(公告)号：US10916805B2

公开(公告)日：2021-02-09

申请号：US14244984

申请日：2014-04-04

Applicant: Solvay SA

Inventor： Xudong Chen ,  Charles J. Dubois ,  William L. Holstein ,  Kostantinos Kourtakis ,  Mark Gerrit Roelofs

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/485

Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.

公开(公告)号：US10205192B2

公开(公告)日：2019-02-12

申请号：US15311312

申请日：2015-05-14

Applicant: Solvay SA

Inventor： Charles J. Dubois ,  Kostantinos Kourtakis ,  Jun J. Liu ,  Mark Gerrit Roelofs

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/583

Abstract: Described are electrolyte compositions containing a non-fluorinated carbonate, a fluorinated solvent, a cyclic sulfate, at least one lithium borate salt selected from lithium bis(oxalato)borate, lithium difluoro(oxalato)borate, lithium tetrafluoroborate, or mixtures thereof, and at least one electrolyte salt. The cyclic sulfate can be represented by the formula: wherein each A is independently a hydrogen or an optionally fluorinated vinyl, allyl, acetylenic, propargyl, or C1-C3 alkyl group. The electrolyte composition may further comprise a fluorinated cyclic carbonate. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.