Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Sanyo Electric Co., Ltd.

Akihiro Horikawa

Motohiro Okochi

Shuzo Tsuchida

Toshiyuki Kojima

Kazufumi Miyatake

Tsumoru Ohata

Tatsuo Mifune

Yoshiro Kitamura

Ami Okabe

Masahiro Nakamura

Masaru Watanabe

Toshifumi Nagino

Yasuhiro Ueyama

Tomomichi Ueda

Shunichi Matsuno

Yoshihiro Nakamura

Katsuji Sumimoto

Isao Muragisi

An all-solid-state battery has a structure in which a positive electrode current collector, a positive electrode layer containing a positive electrode active material and a solid electrolyte, a solid electrolyte layer containing a solid electrolyte, a negative electrode layer containing a negative electrode active material and a solid electrolyte, and a negative electrode current collector are stacked in this order. The solid electrolyte layer has a repeating structure in which a low porosity portion and a high porosity portion having a higher porosity than a porosity of the low porosity portion are repeated in an in-plane direction.

All-solid-state battery and method for manufacturing the same

A powder layer composite includes a base and a powder layer having a thickness of 100 μm or less and disposed on the base. An average of a total value of a number of powder aggregates having a long diameter of 500 μm or greater and a number of pinholes having a long diameter of 500 μm or greater, in any of a plurality of different regions of 20 mm×20 mm on a surface of the powder layer, is 0.2 pieces/cmor less.

Powder layer composite, coating film, powder coating method, and powder coating apparatus

Positive electrode layeris used for an all-solid-state battery. Positive electrode layerincludes positive electrode active materialand solid electrolyte. A filling rate of positive electrode layeris 85% or more. A porosity of positive electrode active materialis 5% or less.

Positive electrode layer and all-solid-state battery

A solid-state battery that exhibits improved battery performance includes: a positive-electrode collector; a negative-electrode collector; a positive electrode layer formed on the positive-electrode collector and containing a positive-electrode active material and a solid electrolyte; a negative electrode layer formed on the negative-electrode collector and containing a negative-electrode active material and a solid electrolyte; and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer and containing a solid electrolyte. At least one of the solid electrolyte and the solid electrolyte partly represents a porous solid electrolyte.

Solid-state battery and method of manufacture thereof

A powder application apparatus includes a transport device, a powder supplier, a squeegee, and an ultra-high frequency vibration generator. The transport device is configured to move a sheet in a predetermined direction. The powder supplier is configured to supply powder on a surface of the sheet. The squeegee is positioned at a distance from the sheet, and the powder supplier is configured to adjust a thickness of the powder supplied onto the surface of the sheet. The ultra-high frequency vibration generator is configured to vibrate the squeegee at a frequency of 2 kHz or more and 300 kHz or less.

Powder application apparatus

An electrode includes a collector, and an active material mixture layer located on the collector and containing first particles, second particles, first active material particles, and second active material particles. The active material mixture layer includes a first mixture layer located on the collector and containing the first particles and the first active material particles, and a second mixture layer located on the first mixture layer and containing the second particles and the second active material particles. The active material mixture layer has a boundary in which the first active material particles and the second active material particles are in contact with each other in a discontinuous state at least in part, in a cross-sectional view of the electrode.

Electrode, battery, and method for manufacturing electrode

A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.

Electrode active substance, method for producing electrode active substance, and all-solid battery using electrode active substance

An all-solid battery is formed by laminating a first current collector, a positive-electrode layer, a solid electrolyte layer, a negative-electrode layer, and a second current collector in this order. The positive-electrode fine particle layer contains positive-electrode active material fine particles having a particle diameter smaller than that of the positive-electrode active material and is formed on a side surface of the positive-electrode layer. The negative-electrode fine particle layer contains negative-electrode active material fine particles having a particle diameter smaller than that of the negative-electrode active material and is formed on a side surface of the negative-electrode layer.

All-solid battery and method of manufacturing the same

An all-solid-state battery includes: a positive electrode layer including a positive electrode current collector and a positive electrode mixture layer; a negative electrode layer including a negative electrode current collector and a negative electrode mixture layer; and a solid electrolyte layer. The solid electrolyte layer is disposed between the positive electrode mixture layer and the negative electrode mixture layer. A weight per unit area of a first portion of the negative electrode mixture layer overlapping the positive electrode mixture layer on a stacking axis is greater than a weight per unit area of a second portion of the negative electrode mixture layer not overlapping the positive electrode mixture layer on the stacking axis.

All-solid-state battery

An all-solid battery includes a positive-electrode layer, a negative-electrode layer, and a solid electrolyte layer. The positive-electrode layer includes a positive-electrode current collector, a positive-electrode bonding layer containing at least a conductive agent comprising non-metal and formed on the positive-electrode current collector, and a positive-electrode mixture layer containing at least a positive-electrode active material and a solid electrolyte and formed on the positive-electrode bonding layer. The negative-electrode layer includes a negative-electrode current collector and a negative-electrode mixture layer containing at least a negative-electrode active material and the solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer and contains the solid electrolyte. A concentration of a binder contained in the positive-electrode mixture layer is less than or equal to 100 ppm and a concentration of a solvent contained in the positive-electrode mixture layer is less than or equal to 50 ppm.

An all-solid-state battery includes: a positive electrode layer including a positive electrode current collector and a positive electrode mixture layer; a negative electrode layer including a negative electrode current collector and a negative electrode mixture layer; and a solid electrolyte layer. The solid electrolyte layer is disposed between the positive electrode mixture layer and the negative electrode mixture layer. On a plane perpendicular to a stacking axis, an area of the negative electrode mixture layer is larger than an area of the positive electrode mixture layer. On the stacking axis, an entire portion of the positive electrode mixture layer overlaps a portion of the negative electrode mixture layer.

An all-solid battery includes a positive-electrode layer having a positive-electrode current collector and a positive-electrode mixture layer, a negative-electrode layer having a negative-electrode current collector and a negative-electrode mixture layer, and a solid electrolyte layer. The positive-electrode mixture layer contains a positive-electrode active material and a solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer. In the positive-electrode mixture layer, the active material volume proportion is larger and the porosity is smaller in a portion closer to the positive-electrode current collector than in a portion far from the positive-electrode current collector.

All-solid battery

A positive electrode active material layer is formed on at least one surface of a positive electrode current collector having a substantially rectangular planar shape. The positive electrode current collector includes an exposed portion in a partial region in a longitudinal direction and at an end portion of the partial region in a width direction, and a positive electrode lead is to be connected to the exposed portion. In a region in which the positive electrode active material layer is formed, an elastic modulus of a first region adjacent to the exposed portion in the width direction is larger than elastic moduli of second regions adjacent to the exposed portion and the first region in the longitudinal direction.

Electrode sheet for use in power storage device and power storage device including electrode sheet

A coating barin a coating apparatus includes groovesthat are formed, on the surface of a cylindrical shaft, from a contact point between the coating barand a substratein a traveling direction and a direction opposite to the traveling direction, and are arranged in the width direction of the shaft. Thus, a uniform film can be stably applied to the curved or wavy substratehaving high rigidity.

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Osaka, Japan

Akihiro Horikawa