Wildcat Discovery Technologies, Inc.

Medtronic, Inc.

Marissa Caldwell

Steven Kaye

David Keogh

Wei Tong

Bin Li

Cory O'Neill

Deidre A Strand

Gang Cheng

Ye Zhu

Prabhakar A Tamirisa

Hui Ye

Vinay Bhat

Chen Zheng

Electrolyte formulations including a high salt concentration. The electrolyte formulation includes an organic solvent and a lithium salt, wherein the lithium salt is mixed with the organic solvent at a concentration of at least 20 Mole %, or at least 40 Mole %, or at least 50 Mole %. The organic solvent includes N-methyl-2-pyrrolidone, butylene carbonate, butyl propionate, pentyl acetate, &#x3b3;-caprolactone, propylene glycol sulfite, ethyl methyl sulfone, butyl sulfoxide or combinations thereof. The lithium salt includes lithium bis(trifluoromethane sulfonyl) imide, lithium tetrafluoroborate, or lithium hexafluorophosphate.

Liquid electrolyte formulations with high salt content

Additives to electrolytes that enable the formation of comparatively more robust SEI films on silicon anodes. The SEI films in these embodiments are seen to be more robust in part because the batteries containing these materials have higher coulombic efficiency and longer cycle life than comparable batteries without such additives.

Electrolyte formulations for electrochemical cells containing a silicon electrode

A battery having an anode, a soft-solid electrolyte, and a cathode. The soft-solid electrolyte includes a polymer soft-solid material formed from polymer combined with a solvent such as butylene carbonate, butyl sulfoxide, n-methyl-2-pyrrolidone, or &#x3b3;-caprolactone.

Solid electrolyte compositions

An electrochemical cell having an anode, a solid electrolyte, and a cathode. The solid electrolyte includes a polymer gel formed from an ethylene oxide polymer combined with a liquid precursor. The liquid precursor contains at least 15 molar percent of a lithium salt in a solvent.

High voltage solid electrolyte compositions

A lithium ion battery having an anode, a solid electrolyte, and a cathode. The cathode includes an electrode active material, a first lithium salt, and a polymer material. The solid electrolyte can include a second lithium salt. The solid electrolyte can include a ceramic material, a lithium salt, and a polymer material.

Solid state electrolyte and electrode compositions

An electrode for an electrochemical cell including a metal fluoride containing active electrode material and an intrinsically conductive coating wherein the coating is applied to the active electrode material by heating the mixture for a time and at a temperature that limits degradation of the cathode active material. The active material can be a hybrid material formed from the reaction of a metal fluoride and a metal complex.

High energy cathode for a battery

An electrode for an electrochemical cell including an active electrode material and an intrinsically conductive coating wherein the coating is applied to the active electrode material by heating the mixture for a time and at a temperature that limits degradation of the cathode active material.

Cathode for a battery

A composition for use in a battery electrode including lithium-sulfur particles coated with a transition metal species bonded to a sulfur species. Methods and materials for preparing such a composition. Use of such a compound in a battery.

Lithium sulfide cathode material with transition metal coating

A composition for use in a battery electrode comprising a compound including lithium, manganese, nickel, and oxygen. The composition is characterized by a powder X-ray diffraction pattern having peaks including 18.6&#xb1;0.2, 35.0&#xb1;0.2, 36.4&#xb1;0.2, 37.7&#xb1;0.2, 42.1&#xb1;0.2, and 44.5&#xb1;0.2 degrees 2&#x3b8; as measured using Cu Kradiation.

High energy cathode material

A method for extracting ions from an active material for use in a battery electrode includes mixing the active material and an activating compound to form a mixture. The mixture is annealed such that an amount of ions is extracted from the active material, an amount of oxygen is liberated from the active material, and an activated active material is formed. Embodiments of the invention include the activated active material, the electrode, and the primary and secondary batteries formed from such activated active materials.

Growing community of inventors

San Diego, CA, United States of America

Marissa Caldwell