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Title: Non-aqueous electrolytes for electrochemical cells

Abstract

A electrolyte for a lithium battery includes a silane/siloxane compound represented by SiR.sub.4-x-yR'.sub.xR''.sub.y, by Formula II, or Formula III: ##STR00001## where each R is individually an alkenyl, alkynyl, alk(poly)enyl, alk(poly)ynyl, aryl; each R' is represented by; ##STR00002## each R'' is represented by Formula I-B; ##STR00003## R.sup.1 is an organic spacer; R.sup.2 is a bond or an organic spacer; R.sup.3 is alkyl or aryl; k is 1-15; m is 1-15; n is 1 or 2; p is 1-3; x' is 1-2; and y' is 0-2.

Inventors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1261597
Patent Number(s):
9,391,345
Application Number:
13/245,092
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL) ANL
DOE Contract Number:
AC02-06CH11357
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Sep 26
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Dong, Jian, Zhang, Zhengcheng, and Amine, Khalil. Non-aqueous electrolytes for electrochemical cells. United States: N. p., 2016. Web.
Dong, Jian, Zhang, Zhengcheng, & Amine, Khalil. Non-aqueous electrolytes for electrochemical cells. United States.
Dong, Jian, Zhang, Zhengcheng, and Amine, Khalil. Tue . "Non-aqueous electrolytes for electrochemical cells". United States. doi:. https://www.osti.gov/servlets/purl/1261597.
@article{osti_1261597,
title = {Non-aqueous electrolytes for electrochemical cells},
author = {Dong, Jian and Zhang, Zhengcheng and Amine, Khalil},
abstractNote = {A electrolyte for a lithium battery includes a silane/siloxane compound represented by SiR.sub.4-x-yR'.sub.xR''.sub.y, by Formula II, or Formula III: ##STR00001## where each R is individually an alkenyl, alkynyl, alk(poly)enyl, alk(poly)ynyl, aryl; each R' is represented by; ##STR00002## each R'' is represented by Formula I-B; ##STR00003## R.sup.1 is an organic spacer; R.sup.2 is a bond or an organic spacer; R.sup.3 is alkyl or aryl; k is 1-15; m is 1-15; n is 1 or 2; p is 1-3; x' is 1-2; and y' is 0-2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 12 00:00:00 EDT 2016},
month = {Tue Jul 12 00:00:00 EDT 2016}
}

Patent:

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  • An electrolyte electrochemical device includes an anodic material and an electrolyte, the electrolyte including an organosilicon solvent, a salt, and a hybrid additiving having a first and a second compound, the hybrid additive configured to form a solid electrolyte interphase film on the anodic material upon application of a potential to the electrochemical device.
  • Novel electrolyte salts are disclosed having high current carrying capability for non-aqueous electrochemical cells particularly those containing fluid depolarizer/electrolyte solvents. The salts have the general formula M(ZX/sub 4/) /SUB n/ with ''M'' being an alkali or alkaline earth metal, ''Z'' being gallium, (indium or thallium,) ''X'' being a halogen and ''n'' being either 1 or 2.
  • Novel electrolyte salts having high current carrying capability and which substantially prevent voltage delay in cells containing fluid depolarizers such as thionyl chloride (SOCl/sub 2/) are described. The salts contain an alkali or alkaline earth metal cation and a halogallate indate or thallate anion. The salts additionally preferably contain a chalcogen such as oxygen, sulfur, selenium or tellurium therein.
  • A secondary zinc/oxygen electrochemical cell is described that uses a circulating aqueous inorganic oxyacid electrolyte and has an external load circuit or charging circuit in electronic communication with the anode and cathode, the circuit being completed by ionic interaction through an ionic separator between the catholyte and anolyte. The electrochemical cell of this invention provides a process for production of electricity and may be recharged by providing electrical energy from the external circuit.
  • Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include ion-supplying salts and fluorinated solvents capable of maintaining single phase solutions with the salts at between about -30.degree. C. to about 80.degree. C. The fluorinated solvents, such as fluorinated carbonates, fluorinated esters, and fluorinated esters, are less flammable than their non-fluorinated counterparts and increase safety characteristics of cells containing these solvents. The amount of fluorinated solvents in electrolytes may be between about 30% and 80% by weight not accounting weight of the salts. Fluorinated salts, such as fluoroalkyl-substituted LiPF.sub.6, fluoroalkyl-substituted LiBF.sub.4 salts, linear and cyclic imidemore » salts as well as methide salts including fluorinated alkyl groups, may be used due to their solubility in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene or, more specifically, a cyclic phosphazene and/or one or more ionic liquids.« less