Apple Inc.

National Cheng-Kung University

Chi-Kai Lin

Hongli Dai

Huiming Wu

Christopher S Johnson

John David Carter

Xiaoping Wang

Hakim H Iddir

Zhenzhen Yang

Yanjie Cui

Arthur Jeremy Kropf

Yan Li

Anh D Vu

James A Gilbert

Michael J Erickson

Martin Bettge

Dapeng Wang

Yonhua Tzeng

Akshaya K Padhi

Chuan-Pu Liu

Yin-Wei Cheng

Fiona Claire Strobridge

Orlando Hector Auciello

Ana Kircova

YoungHo Shin

Fulya Dogan-Key

The disclosure provides a plurality of particles. Each particle may include a material comprising 0.95 to 1.30 mole fraction Li, at least 0.60 and less than 1.00 mole fraction Co, up to 10,000 ppm Al, 1.90 to 2.10 mole fraction O, and up to 0.30 mole fraction M, where M is at least one element selected from B, Na, Mg, P, Ti, Ca, V, Cr, Fe, Mn, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, Mo, La, Si, Nb, Ge, In, Sn, Sb, Te, and Ce. Each particle may also include a surface composition comprising a mixture of LiF and a metal fluoride. An amount of fluorine (F) is greater than 0 and less than or equal to 5000 ppm. The metal fluoride comprises a material selected from the group consisting of AlF, CaF, MgF, and LaF. The surface composition may also include a metal oxide comprising a material selected from the group consisting of TiO, MgO, LaO, CaO, and AlO. An amount of the metal oxide is greater than 0 and less than or equal to 20000 ppm.

Lithium fluoride-containing coatings for cathode active materials in Li-ion batteries

Compounds, particles, and cathode active materials that include lithium, cobalt, manganese, nickel, aluminum, and other elements can be used in lithium ion batteries. The cathode active materials include compounds having the general Formula (I): compound represented by Formula (I): LiCOMeMnNiAlO, as well as Formula (II): LiCOMeMnNiAlO.

Cathode active materials for lithium ion batteries

Compounds, particles, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.

Aluminum-doped lithium cobalt manganese oxide batteries

Compounds, powders, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.

Cathode active materials for lithium-ion batteries

Cathode active materials have composite particles each with a base particle having the following formula: LiNiMCoO, wherein 0.95&#x2264;&#x3b1;&#x2264;1.5, 0.6&#x2264;x&#x2264;1.0, 0&#x2264;y&#x2264;0.5, 0&#x2264;z&#x2264;0.5; x+y+z=1; and M is one of Mn and Al, and coating particles coating each base particle, the coating particles having the following formula: LiNiMnCoO, wherein 0.95&#x2264;a&#x2264;1.5, 0&#x2264;b&#x2264;0.35, 0&#x2264;c&#x2264;1.0, 0&#x2264;d&#x2264;1.0 and b+c+d=1.

Coated nickel-based cathode materials and methods of preparation

A composite electrode and a lithium-based battery are disclosed, wherein the composite electrode comprises: a substrate and a conductive layer formed on the substrate, wherein the conductive layer comprises graphite powders, Si-based powders, Ti-based powders, or a combination thereof embedded in a conductive matrix and coated with diamond films, and the diamond films are formed of diamond grains. The novel electrodes of the present invention when used in the Li-based battery can provide superior performance including excellent chemical inertness, physical integrity, and charge-discharge cycling life-time, and exhibit high electric conductivity and excellent lithium ion permeability.

Diamond film coated electrode for battery

Growing community of inventors

Naperville, IL, United States of America

Chi-Kai Lin