Apple Inc.

Leyden Energy, Inc.

Hongli Dai

Huiming Wu

Christopher S Johnson

John David Carter

Dapeng Wang

Xiaoping Wang

Hakim H Iddir

Arthur Jeremy Kropf

Yan Li

Zhenzhen Yang

Yanjie Cui

Anh D Vu

Richard M Mank

James A Gilbert

Stephen Paul Zadesky

Victor A Maroni

Arturo Gutierrez

Chi-Kai Lin

Richard Hung Minh Dinh

Daniel William Jarvis

Meng Chi Lee

Vijayasekaran Boovaragavan

Rishabh Bhargava

Steven D Sterz

Fiona Claire Strobridge

Julian Malinski

Julien Marcil

Soundararajan Manthiri

David M Demuro

Michael J Erickson

Martin Bettge

Rui Xu

Ji-Guang Zhang

Wu Xu

Zuqin Liu

Konstantin Tikhonov

Akshaya K Padhi

Marc W Juzkow

Xiaolin Li

Ran Yi

Chongmin Wang

Qiuyan Li

Michael Erickson

Hyea Kim

Soundarajan Manthiri

YoungHo Shin

Sunho Kang

David M DeMuro

Rajankumar L Patel

Hyung-Seok Lim

Aakar Patel

Jun Lui

Hashmat Haidari

Langli Luo

Thomas Nagy

Ana Kircova

Yang He

Fulya Dogan-Key

Methods of making such compounds, powders, and cathode active materials are described. The powders are formed of particles with specific properties: a particle size distribution with a D50 ranging from 10 μm to 20 μm, a D10 less than 8 μm, and a D99 of the particles ranges from 25 μm to 35 μm. The final compound is represented by the Formula Li(CoMnMeAl)O, wherein 0.95<α<1.05, x≤1.00, 0<y≤0.04, 0<z≤0.050, and δ≈2.

Mono-grain cathode materials

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

A cathode active material includes a plurality of cathode active compound particles and a coating disposed over each of the cathode active compound particles. The coating includes a lithium (Li)-ion conducting oxide containing lanthanum (La) and titanium (Ti).

Coatings for cathode active materials

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. The particles have a particle size distribution with a D50 ranging from 10 μm to 20 μm.

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, 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

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

Cathode active materials are provided. The cathode active material can include a plurality of cathode active compound particles. A coating is disposed over each of the cathode active compound particles. The coating can include at least one of ZrO, LaO, a mixture of AlOand ZrOor a mixture of AlOand LaO. The battery cells that include the cathode active material are also provided.

Oxide mixture and complex oxide coatings for cathode materials

Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.

Methods for determining and controlling battery expansion

A compound represented by LiCoMe(M1M2)O, (Formula (I)) wherein Me, is one or more of Li, Mg, Al, Ca, Ti, Zr, V, Cr, Mn, Fe, Ni, Cu, Zn, Ru and Sn, and wherein 0&#x2264;x&#x2264;0.3, 0&#x3c;y&#x2264;0.4, 0.95&#x2264;&#x3b1;&#x2264;1.4, and 1.90&#x2264;&#x3b4;&#x2264;2.10 is disclosed. Further, particles including such compounds are described.

Surface stabilized cathode material for lithium ion batteries and synthesizing method of the same

An electronic device may include a battery, and a charging system in electronic communication with the battery. The charging system may be configured to initiate a charging of the batter when the battery is in a partially-depleted state. The charging system may then discontinue the charging in response to the battery being charged to the threshold charge value, and may monitor the function of the electronic device to predict an event of the electronic device. After the event is predicted, the charging system may determine when to initiate a recharging process, so that the battery is fully charged when the event occurs.

Battery charging control base on recurring interactions with an electronic device

An anode active material comprises a silicon-carbon secondary particle comprising a composite having an exterior conformal carbon coating and formed of type I primary particles. Each type I primary particle comprises a core particle of interconnected silicon, the interconnected silicon formed of nano-sized silicon particles each connected to at least one other particle, inner pores internal to the core particle and defined by the interconnected silicon, an internal carbon coating on internal wall surfaces of the inner pores and a conformal carbon coating on the core particle.

Interconnected silicon porous structure for anode active material

Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, NiMnCoMeOand LiNiMnCoMeO. In these compounds, Me is selected from B, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Fe, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ru, Ag, In, and combinations thereof; 0&#x2264;x&#x2264;1; 0&#x2264;y&#x2264;1; 0&#x2264;z&#x3c;1; x+y+z&#x3e;0; 0&#x2264;&#x3b1;&#x2264;0.5; and x+y+&#x3b1;&#x3e;0. For the mixed-metal oxides, 1&#x2264;&#x3b2;&#x2264;5. For the lithiated mixed-metal oxides, &#x2212;0.1&#x2264;&#x3b3;&#x2264;1.0 and 1.9&#x2264;&#x3b2;&#x2264;3. The mixed-metal oxides and the lithiated mixed-metal oxides include particles having an average density greater than or equal to 90% of an ideal crystalline density.

Cathode active materials having improved particle morphologies

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Los Altos, CA, United States of America

Hongli Dai