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US 9,543,572 B2Granted
Non-aqueous electrolyte secondary battery
AssigneeToyota Jidosha Kabushiki Kaisha
InventorIppei Toyoshima
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Abstract
The present invention provides a non-aqueous electrolyte secondary battery that comprises an electrode body comprising a positive electrode and a negative electrode. The positive electrode has an upper operating voltage limit of 4.5 V or higher relative to lithium metal. The electrode body comprises a lithium titanate-containing layer. The lithium titanate-containing layer is isolated from the negative electrode.
Claims10
A non-aqueous electrolyte secondary battery that comprises an electrode body comprising a positive electrode and a negative electrode, wherein
- the positive electrode has an operating voltage of 4.5 V to 5.5 V relative to lithium metal,
- the electrode body comprises a lithium titanate-containing layer comprising lithium titanate and a binder, the lithium titanate-containing layer being isolated from the negative electrode,
- the lithium titanate-containing layer has a thickness of 5 μm to 15 μm, and
- the lithium titanate-containing layer is placed between the positive electrode and the negative electrode,
- wherein a separator is placed between the positive electrode and the negative electrode, and the lithium titanate-containing layer is provided above the positive electrode side surface of the separator.
2 more elements
Dependencies are inferred from the claim text.