Battelle Memorial Institute

Apple Inc.

Albemarle Corporation

Ran Yi

Ji-Guang Zhang

Xiaolin Li

Qiuyan Li

Jie Xiao

Wu Xu

Chongmin Wang

Yujing Bi

Sujong Chae

Richard M Mank

Hongli Dai

Zuqin Liu

Xia Cao

Hyea Kim

Xianhui Zhang

Hao Jia

Won-Jin Kwak

Bingbin Wu

Rajankumar L Patel

Subramanian Venkatachalam

Hyung-Seok Lim

Job T Rijssenbeek

Xiaoguang Hao

Liu Luo

Yaobin Xu

Langli Luo

Sunho Kang

Yang He

A solid-state method for recycling spent and/or scrap cathode material includes heating a cathode material comprising lithium nickel manganese cobalt oxide in an oxygen-containing atmosphere at a temperature Tfor an effective period of time tto convert the cathode material to a solid precursor, combining the solid precursor with a lithium compound, and heating the solid precursor and the lithium compound in an oxygen-containing atmosphere at a temperature Tfor an effective period of time tto form a product comprising monocrystalline lithium nickel manganese cobalt oxide having a formula LiNiMnMCoO, where M represents one or more dopant metals, x≥0.33, 0.01≤y<0.33, 0≤z≤0.05, and x+y+≤z 1.0.

Direct recycling and converting cathode materials into high-performance single crystal cathode materials

Stabilized porous silicon particles are disclosed. The particles include a porous silicon particle comprising a plurality of interconnected silicon nanoparticles and (i) a heterogeneous layer comprising a discontinuous SiC coating that is discontinuous across a portion of pore surfaces and across a portion of an outer surface of the porous silicon particle, and a continuous carbon coating that covers outer surfaces of the discontinuous SiC coating, and remaining portions of the pore surfaces and the outer surface of the porous silicon particle, or (ii) a continuous carbon coating on surfaces of the porous silicon particle, including the outer surface and pore surfaces. Methods of making the stabilized porous silicon particles also are disclosed.

Stabilized porous silicon structure for highly stable silicon anode and methods of making

Methods for synthesizing crystalline Ni-rich cathode materials are disclosed. The Ni-rich cathode material may have a formula LiNixMnMCoO, where M represents one or more dopant metals, x≥0.6, 0.01≤y<0.2, 0≤z≤0.05, and x+y+z≤1.0. The methods are cost-effective, and include methods for solid-state, molten-salt, and flash-sintering syntheses.

Cost effective synthesis of oxide materials for lithium ion batteries

A method for etching materials in which organic solvents are added to the etching mixture and combined in a mixing arrangement. When agitated organic materials mix with the etching agent and interact with the underlying material to form a shield around the etched areas that prevents the additional interaction of water with the newly etched areas and enables the etching of silicon oxides (SiOx) but does not oxidize Si. This method leads to milder reactions with less heat generation and avoids the safety hazards associated with conventional etching methods.

Method to control the etching rate of materials

Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, or a combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent.

Electrolytes for lithium batteries with carbon and/or silicon anodes

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

Growing community of inventors

Richland, WA, United States of America

Ran Yi