Madison, WI, United States
Madison, WI, United States
SEARCH FILTERS
Time filter
Source Type

Described are electrolyte compositions and electrochemical devices containing them. The compositions include an organosilicon compound, an imide salt and optionally LiPF6. The electrolytes provide improved high-temperature performance and stability and will operate at temperatures as high as 250C. An electrolyte composition comprising, in combination: an organosilicon compound and an imide salt and optionally UPF6; wherein when subjected to cyclic voltammetry at a plurality of cycles ranging from about 3V to about 5V and using a cathode current collector comprising aluminum versus Li/Lit electrodes the composition exhibits an oxidative corrosion current of about 0.10 mA/cm2 or less for a second and subsequent cycles.


Described are compounds of the structure R4-a-Si-(Sp-Y)a-Zb, wherein a is integer from 1 to 4; b is an integer from 0 to (3 x a); Z, which is absent when b R or formula (II), wherein each R is halogen, C1-6 linear or branched alkyl, alkenyl, or alkynyl or C1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl; each Sp C1-15 linear or branched alkylenyl or CMS linear or branched halo-alkylenyl; and each Y an organic polar group. Also described are electrolyte compositions containing one or more of these compounds.


Patent
Silatronix, Inc. | Date: 2014-05-20

The electrolyte includes one or more salts and a silane. The silane has a silicon linked to one or more first substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety. The silane can be linked to four of the first substituents. Alternately, the silane can be linked to the one or more first substituents and one or more second substituents that each exclude both a poly(alkylene oxide) moiety and a cyclic carbonate moiety.


Described are electrolyte compositions and electrochemical devices containing them. The compositions include an organosilicon compound, an imide salt and optionally LiPF6. The electrolytes provide improved high-temperature performance and stability and will operate at temperatures as high as 250 C. An electrolyte composition comprising, in combination: an organosilicon compound and an imide salt and optionally UPF6; wherein when subjected to cyclic voltammetry at a plurality of cycles ranging from about 3V to about 5V and using a cathode current collector comprising aluminum versus Li/Lit electrodes the composition exhibits an oxidative corrosion current of about 0.10 mA/cm2 or less for a second and subsequent cycles.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 750.00K | Year: 2011

Silatronix has developed novel organosilicon compounds that can be used as drop-in replacements for conventional carbonate electrolytes in lithium-ion cells. These organosilicon electrolytes have very high flash points and have demonstrated superior stability and safety characteristics. In the course of this research, Silatronix will optimize the composition of these electrolytes to meet the specific power, lifetime, and operating temperature requirements established in the solicitation. Working with commercial partners, we will deliver a system that provides superior safety at a cost and performance levels similar to current electrolytes.


Described are organosilicon electrolyte compositions having improved thermostability and electrochemical properties and electrochemical devices that contain the organosilicon electrolyte compositions.


Described are electrolyte compositions having at least one salt and at least one compound selected from the group consisting of: wherein a is from 1 to 3; b is 1 or 2; 4a+b2; X is a halogen; R can be alkoxy or substituted alkoxy, among other moieties, and R^(1 )is alkyl, substituted alkyl, aryl, substituted aryl, alkoxy, or substituted alkoxy. Also described are electrochemical devices that use the electrolyte composition.


Described are electrolyte compositions having at least one salt and at least one compound selected from the group consisting of:


Described herein are liquid, organosilicon compounds that including a substituent that is a cyano (CN), cyanate (OCN), isocyanate (NCO), thiocyanate (SCN) or isothiocyanate (NCS). The organosilicon compounds are useful in electrolyte compositions and can be used in any electrochemical device where electrolytes are conventionally used.


Described herein are liquid, organosilicon compounds that including a substituent that is a cyano (CN), cyanate (OCN), isocyanate (NCO), thiocyanate (SCN) or isothiocyanate (NCS). The organosilicon compounds are useful in electrolyte compositions and can be used in any electrochemical device where electrolytes are conventionally used.

Loading Silatronix, Inc. collaborators
Loading Silatronix, Inc. collaborators