Ka K Yip

20120121974, May 17, 2012

Oct 13, 2011

13/273114

Konstantin Tikhonov - Pleasanton CA, US
Tobias Johnson - Union City CA, US
Jesse Chau - Newark CA, US
Ka Ki Yip - San Leandro CA, US
Marc Juzkow - Livermore CA, US

Leyden Energy, Inc. - Fremont CA

H01M 10/052
H01M 4/485
H01M 4/66

429200, 429199

Disclosed herein are lithium or lithium-ion batteries that employ an aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.

20120121991, May 17, 2012

Jan 13, 2012

13/350722

Konstantin Tikhonov - Pleasanton CA, US
Tabias Johnson - Union City CA, US
Jesse Chau - Newark CA, US
Ka Ki Yip - San Leandro CA, US
Marc Juzkow - Livermore CA, US

Leyden Energy, Inc. - Fremont CA

H01M 10/056

429338, 429199

Disclosed herein are lithium or lithium-ion batteries that employ an aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.

20130288138, Oct 31, 2013

Mar 15, 2013

13/842569

Leyden Energy, Inc. - , US
Tobias Johnson - Union City CA, US
Jesse Chau - Newark CA, US
Ka Ki Yip - San Leandro CA, US
Marc Juzkow - Livermore CA, US

H01M 4/38

429338, 429188, 429342

Disclosed herein are lithium or lithium-ion batteries that employ an aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.

20130337338, Dec 19, 2013

Jun 3, 2013

13/909014

Ka Ki Yip - San Leandro CA, US
Tzu-Yuan Lin - San Jose CA, US

H01M 10/0569
H01M 10/0525

429326

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 C. to about 80 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, fluoroalkyl-substituted LiBFsalts, linear and cyclic imide 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.

20130337339, Dec 19, 2013

Jun 4, 2013

13/910098

Ka Ki Yip - San Leandro CA, US
Tzu-Yuan Lin - San Jose CA, US
Norman Lei - San Francisco CA, US
Kristie W. Kwong - San Francisco CA, US

H01M 10/0569
H01M 10/0568
H01M 10/0567

429326, 429341

Provided are electrochemical cells and electrolytes used to build such cells. An electrolyte includes at least one salt having a molecular weight less than about 250. Such salts allow forming electrolytes with higher salt concentrations and ensure high conductivity and ion transport in these electrolytes. The low molecular weight salt may have a concentration of at least about 0.5M and may be combined with one or more other salts, such as linear and cyclic imide salts and/or methide salts. The concentration of these additional salts may be less than that of the low molecular weight salt, in some embodiments, twice less. The additional salts may have a molecular weight greater than about 250. The electrolyte may also include one or more fluorinated solvents and may be capable of maintaining single phase solutions at between about −30 C. to about 80 C.

20130337340, Dec 19, 2013

Jun 4, 2013

13/910105

Ka Ki Yip - San Leandro CA, US
Tzu-Yuan Lin - San Jose CA, US
Norman Lei - San Francisco CA, US
Kristie W. Kwong - San Francisco CA, US

H01M 10/0569
H01M 10/0568
H01M 10/0567

429326, 429200

Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include imide salts and/or methide salts as well as fluorinated solvents capable of maintaining single phase solutions at between about −30 C. to about 80 C. The fluorinated solvents, such as fluorinated carbonates, fluorinated esters, and fluorinated esters, are less flammable than their non-fluorinated counterparts and improve 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. Linear and cyclic imide salts, such as LiN(SOCFCF), and LiN(SOCF), as well as methide salts, such as LiC(SOCF)and LiC(SOCFCF), may be used in these electrolytes. Fluorinated alkyl groups enhance solubility of these salts in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene, and/or one or more ionic liquids.

20130337341, Dec 19, 2013

Jun 4, 2013

13/910108

Ka Ki Yip - San Leandro CA, US
Tzu-Yuan Lin - San Jose CA, US
Michael Jason Erickson - Plano TX, US

H01M 10/0569
H01M 10/0568
H01M 10/0567

429326

Provided are electrochemical cells and electrolytes used to build such cells. An electrolyte may include a fluoroalkyl-substituted LiPFsalt or a fluoroalkyl-substituted LiBFsalt. In some embodiments, at least one fluorinated alkyl of the salt has a chain length of from 1 to 8 or, more specifically, between about 2 and 8. These fluorinated alkyl groups, in particular, relatively large fluorinated alkyl groups improve solubility of these salts in fluorinated solvents that are less flammable than, for example, conventional carbonate solvents. At the same time, the size of fluoroalkyl-substituted salts should be limited to ensure adequate concentration of the salt in an electrolyte and low viscosity of the electrolyte. In some embodiments, the concentration of a fluoroalkyl-substituted salt is at least about 0.5M. Examples of fluorinated solvents include various fluorinated esters, fluorinated ethers, and fluorinated carbonates, such a 1-methoxyheptafluoropropane, methyl nonafluorobutyl ether, ethyl nonafluorobutyl ether, 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-(trifluoromethyl)-pentane, 3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-trifluoromethyl-hexane, and 1,1,1,2,3,3-hexafluoro-4-(1,1,2,3,3,3-hexafluoropropoxy)-pentane.