Abstract: 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.

Abstract: 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 AlF3, CaF2, MgF2, and LaF2. The surface composition may also include a metal oxide comprising a material selected from the group consisting of TiO2, MgO, La2O3, CaO, and Al2O3. An amount of the metal oxide is greater than 0 and less than or equal to 20000 ppm.

Abstract: Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, NixMnyCozMe?O? and Li1+?NixMnyCozMe?O?. 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?x?1; 0?y?1; 0?z<1; x+y+z>0; 0???0.5; and x+y+?>0. For the mixed-metal oxides, 1???5. For the lithiated mixed-metal oxides, ?0.1???1.0 and 1.9???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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 ?m to 20 ?m.

Abstract: 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.

Abstract: 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).

Abstract: 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.

Abstract: 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.

Abstract: Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, NixMnyCozMe?O? and Li1+?NixMnyCozMe?O?. 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?x?1; 0?y?1; 0?z<1; x+y+z>0; 0???0.5; and x+y+?>0. For the mixed-metal oxides, 1???5. For the lithiated mixed-metal oxides, ?0.1???1.0 and 1.9???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.

Abstract: A compound represented by Li?Co(1-x-2y)Mex(M1M2)yO?, (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?x?0.3, 0<y?0.4, 0.95???1.4, and 1.90???2.10 is disclosed. Further, particles including such compounds are described.

Abstract: 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.

Abstract: 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.

Abstract: The disclosed embodiments provide a battery cell. The battery cell includes an anode containing an anode current collector and an anode active material disposed over the anode current collector. The battery cell also includes a cathode containing a cathode current collector and a cathode active material disposed over the cathode current collector. The cathode active material has a composition represented by xLi2MO3·(1-x)LiCoyM?(1-y)O2.

Abstract: A compound represented by Li?Co(1-x-2y)Mex(M1M2)yO?, (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?x?0.3, 0<y?0.4, 0.95???1.4, and 1.90???2.10 is disclosed. Further, particles including such compounds are described.

Abstract: Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, NixMnyCozMe?O? and Li1+?NixMnyCozMe?O?. 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?x?1; 0?y?1; 0?z<1; x+y+z>0; 0???0.5; and x+y+?>0. For the mixed-metal oxides, 1???5. For the lithiated mixed-metal oxides, ?0.1???1.0 and 1.9???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.

Abstract: Compounds that can be used as cathode active materials for lithium ion batteries are described. In some embodiments, the cathode active material includes the compound LixNiaMbNcO2 where M is selected from Mn, Ti, Zr, Ge, Sn, Te and a combination thereof; N is selected from Mg, Be, Ca, Sr, Ba, Fe, Ni, Cu, Zn, and a combination thereof; 0.9<x<1.1; 0.7<a<1; 0<b<0.3; 0<c<0.3; and a+b+c=1. Other cathode active materials, precursors, and methods of manufacture are presented.

Abstract: Cathode active materials have composite particles each with a base particle having the following formula: Li?NixMyCozO2, wherein 0.95???1.5, 0.6?x?1.0, 0?y?0.5, 0?z?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: LiaNibMncCodO2, wherein 0.95?a?1.5, 0?b?0.35, 0?c?1.0, 0?d?1.0 and b+c+d=1.