Battery, vehicle, electronic device and battery manufacturing method
AssigneeSCREEN Holdings Co., Ltd.
InventorsTakeshi MATSUDA, Masakazu SANADA, Kenta HIRAMATSU, Kiyoshi KANAMURA
Life of this patent
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Abstract
A negative-electrode active material layer formed between a negative-electrode current collector and a solid electrolyte layer has a line-and-space structure in which a plurality of stripe-shaped pattern elements extending in a Y direction are arranged while being separated from each other. A gradient at each contact point where the stripe-shaped pattern element, the negative-electrode current collector and the solid electrolyte layer are in contact with each other is made smaller than 90°.
Claims13
A battery comprising a first current collector layer, a first active material layer, an electrolyte layer, a second active material layer and a second current collector layer laminated in this order, wherein,
- the first active material layer has an island structure in which a plurality of island parts containing an active material are arranged on a surface of the first current collector layer while being separated from each other;
- and
- an angle at a side including the first active material layer out of angles formed between the surface of the first current collector layer and a tangent drawn to the first active material layer at a contact point of each island part and the first current collector layer is smaller than 90°.
A battery manufacturing method, comprising:
- a first step of forming a first active material layer, which has an island structure composed of a plurality of island parts separated from each other, on a surface of a base material which will become a first current collector layer;
- and
- a second step of laminating an electrolyte layer covering exposed surfaces of the base material not covered by the first active material layer and a surface of the first active material layer, a second active material layer and a second current collector layer;
- wherein, in the first step, an angle at a side including the first active material layer out of angles formed between the surface of the first current collector layer and a tangent drawn to the first active material layer at a contact point of each island part and the first current collector layer is smaller than 90°.
Dependencies are inferred from the claim text.