Toyota Jidosha Kabushiki Kaisha

Masaru Kubota

Jun Yoshida

Yohei Shindo

Shinya Shiotani

Kazuki Muraishi

Takeshi Usami

Masanori Kitayoshi

Aiko Nagano

Yuki Ishigaki

A method for producing a coated active material includes dropletizing a slurry to obtain slurry droplets wherein the slurry contains an active material and a coating liquid, gas-flow drying the slurry droplets in a heating gas to obtain a precursor, and firing the precursor.

Coated active material production method and coated active material

Disclosed is a method in which both the suppression of granulation of an active material and the acceleration of production steps are achieved when producing an electrode mixture containing a coated active material. The method comprises dropletizing a slurry containing an active material and a coating liquid to obtain slurry droplets, gas-flow drying the slurry droplets in a heating gas to obtain a first and a second precursor, and firing the first and the second precursor to obtain a first and second particle, wherein the first precursor contains the active material and a component from the coating liquid, the second precursor is free of the active material and contains a component from the coating liquid, the first particle has the active material and a coating layer, and the second particle is free of the active material and contains a component same as that constituting the coating layer.

Electrode mixture production method, electrode mixture, electrode, and lithium-ion battery

The coating liquid includes a solute and a solvent. The solute comprises a phosphoric acid compound and a lithium compound. The coating liquid has a pH of 2.5 to 10.7.

Coating liquid, manufacturing method of composite particle, and manufacturing method of all solid state battery

A solid-state battery having a low heat generation amount and low resistance, and a method for producing the same. The solid-state battery is a solid-state battery comprising: a cathode comprising a cathode layer that contains an oxide-based cathode active material, an anode comprising an anode layer that contains an anode active material, and a solid electrolyte layer being disposed between the cathode layer and the anode layer and containing a solid electrolyte, wherein at least any one of the cathode layer and the solid electrolyte layer contains a sulfide-based solid electrolyte, and wherein the sulfide-based solid electrolyte comprises a high oxygen concentration layer on a contact surface with the oxide-based cathode active material, the high oxygen concentration layer having a higher oxygen element concentration than other parts except the contact surface.

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Toyota, Japan

Masaru Kubota