Cladding material for battery collector and electrode
AssigneeHitachi Metals, Ltd.
InventorsYoshimitsu Oda, Ryoji Inoue, Kenichi Funamoto
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Abstract
This cladding material for a battery collector consists of a cladding material having a two-layer structure formed by bonding a first layer arranged on a first surface and constituted of an Al-based alloy and a second layer arranged on a second surface and constituted of a Cu-based alloy to each other by rolling. The ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 35%.
Claims8
A cladding material for a battery collector consisting of a cladding material formed by bonding to each other by rolling
- a core layer constituted of the Ni-based alloy or Fe-based alloy, having a first surface and a second surface, the core layer having a Young's modulus of at least 150 GPa,
- a first layer arranged on the first surface and constituted of an Al-based alloy,
- a second layer arranged on the second surface and constituted of a Cu-based alloy,
- wherein the ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 60% and the thickness of the core layer is at least 30% and not more than 80% of the thickness of the cladding material.
An electrode including a positive pole active material layer and a negative pole active material layer arranged on a first side and a second side of a cladding material for a battery collector respectively, wherein the cladding material for a battery collector consists of a cladding material formed by bonding to each other by rolling a core layer constituted of the Ni-based alloy or Fe-based alloy, having a first surface and a second surface, the core layer having a Young's modulus of at least 150 GPa,
- a first layer arranged on the first surface and constituted of an Al-based alloy, and
- a second layer arranged on the second surface and constituted of a Cu-based alloy
- wherein the ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 60% and the thickness of the core layer is at least 30% and not more than 80% of the thickness of the cladding material.
Dependencies are inferred from the claim text.