Nonaqueous electrolyte energy storage device and method for producing same
AssigneeGS Yuasa International Ltd.
InventorHirotsugu Ioka
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Abstract
A nonaqueous electrolyte energy storage device according to one aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode which has a conductive substrate and a positive electrode composite layer layered on the substrate, wherein the substrate is made from an aluminum alloy containing an element other than aluminum at a content of 1% by mass or more, and the positive electrode composite layer contains particles A and particles B having different particle sizes from each other as positive active materials.
Claims9
A nonaqueous electrolyte energy storage device comprising a positive electrode having a conductive substrate and a positive electrode composite layer layered on the conductive substrate, wherein:
- the conductive substrate is made from an aluminum alloy containing an element other than aluminum at a content of 1% by mass or more,
- the positive electrode composite layer contains particles A and particles B having different particle sizes from each other as positive active materials,
- a particle size ratio (A/B) that is a ratio of a particle size of the particles A to a particle size of the particles B is 3 or more, and
- the conductive substrate has a tensile strength at break of 250 MPa or more.
A method for producing a nonaqueous electrolyte energy storage device, the method comprising:
- mixing particles A and particles B having different particle sizes from each other as positive active materials to produce a positive electrode composite;
- and
- layering the positive electrode composite on a conductive substrate,
- wherein the conductive substrate is made from an aluminum alloy containing an element other than aluminum at a content of 1% by mass or more and has a tensile strength at break of 250 MPa or more, and
- a particle size ratio (A/B) that is a ratio of a particle size of the particles A to a particle size of the particles B is 3 or more.
Dependencies are inferred from the claim text.