Toyota Jidosha Kabushiki Kaisha

Satoshi Wakasugi

Shigenori Hama

Jun Yoshida

Mitsutoshi Otaki

Hideaki Nishimura

Ximeng Li

Shohei Kawashima

Masumi Sato

Tomoya Matsunaga

Sakina Kaneko

So Yubuchi

Hiroshi Suyama

Masashi Kodama

Koji Kawamoto

Hirofumi Nakamoto

Yukiyoshi Ueno

Yasushi Tsuchida

Masato Kamiya

Yasumasa Oguma

Hiroshi Nagase

Hideyo Ebisuzaki

Tetsuya Waseda

Masaki Adachi

A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery comprising an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also containing a polymer, is arranged between the anode current collector and the solid electrolyte layer.

All solid state battery

A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery including an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also contains a polymer, is arranged between the anode current collector and the solid electrolyte layer; and a contacting area rate in an interface between the solid electrolyte layer and the protective layer is 50% or more.

A main object of the present disclosure is to provide an all solid state battery in which occurrence of short circuit is inhibited. The present disclosure achieves the object by providing an all solid state battery comprising an anode including at least an anode current collector, a cathode, and a solid electrolyte layer arranged between the anode and the cathode; wherein a protective layer containing a Mg-containing particle that contains at least Mg, and also containing a polymer, is arranged between the anode current collector and the solid electrolyte layer; the solid electrolyte layer contains a solid electrolyte in a granular shape; and when X designates an average particle size Dof the solid electrolyte and Y designates an average thickness of the solid electrolyte layer, X/Y is 0.0125 or more and 0.02 or less.

A main object of the present disclosure is to provide an anode active material whose volume variation due to charging and discharging is small. The present disclosure achieves the object by providing an anode active material comprising a primary particle including a Si phase, an MSi phase that is a silicide phase wherein M is a transition metal element, and a first void.

Anode active material and battery

Provided is an anode active material configured to achieve both an increase in the coulombic efficiency during initial charge and discharge of an all-solid-state battery, and suppression of an increase in the resistance of the all-solid-state battery. The anode active material may be an anode active material, wherein the anode active material is an anode active material for use in all-solid-state batteries; wherein the anode active material comprises a lithium-silicon alloy and elemental silicon; and wherein the anode active material has peaks at positions of 2&#x3b8;=20.2&#xb0;&#xb1;0.5&#xb0;, 23.3&#xb0;&#xb1;0.5&#xb0;, 40.5&#xb0;&#xb1;0.5&#xb0;, and 46.0&#xb0;&#xb1;0.5&#xb0; in a XRD spectrum obtained by XRD measurement using CuK&#x3b1; radiation.

Anode active material

Disclosed is an anode for all-solid-state batteries, which is, when used in an all-solid-state battery, configured to suppress an increase in the confining pressure of the battery during charge. The anode may be an anode wherein the anode is for use in all-solid-state batteries and comprises an anode layer, and wherein the anode layer contains MSi(where M is one element selected from the group consisting of Yb, Er, Tm and Lu) as an anode active material.

All-solid-state battery including an anode having an anode layer containing MSi

Provided is a method for manufacturing a current collector provided with a conductive layer that can keep a high resistance only at a high temperature. The method includes dispersing a carbon material in an organic solvent to prepare a carbon material dispersion solution, dispersing polyvinylidene fluoride in an organic solvent to prepare a resin dispersion solution, mixing the carbon material dispersion solution, the resin dispersion solution, and water, to prepare a composition for conductive layer formation, and forming a conductive layer on a surface of a current collector by applying the composition for conductive layer formation and thereafter drying the composition.

Method for manufacturing current collector and method for manufacturing solid battery

A solid-state lithium battery in which a thermal stability is improved. The solid-state lithium battery comprises a cathode active material layer containing a cathode active material, an anode active material layer containing an anode active material, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer. The cathode active material is an oxide active material, at least one of the cathode active material layer and the solid electrolyte layer contains a sulfide solid electrolyte material, the sulfide solid electrolyte material comprises a Li element, a P element, a S element, and an I element, and the cathode active material layer contains a specific phosphate ester.

Solid-state lithium battery

The main object of the present invention is to provide an all solid state battery with capability of inhibiting heat generation of an anode layer. The present invention solves the problem by providing an all solid state battery comprising a cathode layer, an anode layer, and a solid electrolyte layer formed between the cathode layer and the anode layer, wherein at least one of the anode layer and the solid electrolyte layer contains a sulfide solid electrolyte material; the anode layer contains an anode active material that is graphite, and contains an additive; and the additive has an oxide that is at least one kind of MoO, SbO, and MnCO, and a coating portion that coats at least a part of the oxide and includes a resin with a hydrocarbon chain as a main chain.

A main object of the present invention is to provide a solid electrolyte layer having flexibility, in which ion conductivity is inhibited from decreasing. The present invention attains the above-mentioned object by providing a solid electrolyte layer including a sulfide solid electrolyte material not having cross-linking sulfur substantially and a branched polymer for binding the above-mentioned sulfide solid electrolyte material.

Solid electrolyte layer, electrode layer for secondary battery and all solid secondary battery

A solid state electrolyte layer includes a sulfide solid state electrolyte material that is manufactured from a raw material composition containing LiS and PSand is substantially free of bridging sulfur, and a hydrophobic polymer for binding the sulfide solid state electrolyte material.

Solid state electrolyte layer, electrode active material layer, all solid state lithium battery, manufacturing method for solid state electrolyte layer, and manufacturing method for electrode active material layer

A method of manufacturing an electrode body having a pair of electrode layers and an electrolyte layer disposed between the pair of electrode layers, by which an electrode body with reduced internal resistance can be manufactured, the method including the steps of: dispersing at least an active material capable of releasing or absorbing and releasing a metal ion, an electrolyte having conductivity for the metal ion, and a binder into a solvent, to prepare an electrode slurry, and applying the electrode slurry onto a base material, thereby forming a sheet-shaped electrode layer containing the binder; and dispersing at least an electrolyte having ion conductivity for the metal ion into a solvent to prepare an electrolyte slurry, and applying the electrolyte slurry onto the electrode layer, thereby forming a sheet-shaped electrolyte layer on the electrode layer.

Method of manufacturing electrode body

A main object of the present invention is to provide a method for producing a solid electrolyte material-containing sheet excellent in strength. The present invention attains the object by providing a method for producing a solid electrolyte material-containing sheet comprising the steps of: preparing a raw material composition containing a sulfide solid electrolyte material and a binder composition containing a monomer or oligomer having a double bond and a radical polymerization initiator; applying the raw material composition to form a sheet-shaped composition; and polymerizing the sheet-shaped composition by radical polymerization.

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Gotenba, Japan

Satoshi Wakasugi