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Cathode for lithium secondary battery and lithium secondary battery comprising the same
US9178209B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9178209-B2 |
| Application number | US-201313852148-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 28, 2013 |
| Priority date | Sep 30, 2010 |
| Publication date | Nov 3, 2015 |
| Grant date | Nov 3, 2015 |
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Abstract
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Disclosed is a cathode for a lithium secondary battery and a lithium secondary battery comprising the same. The cathode for a lithium secondary battery may include a current collector, a first composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the current collector, and a second composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the first composite layer. A specific surface area of the olivine-type lithium iron phosphate cathode active material powder in the second composite layer may be 0.8 times or less that of the olivine-type lithium iron phosphate cathode active material powder in the first composite layer. The cathode for a lithium secondary battery has excellent stability, high energy density, and improved cycle life characteristics.
First claim
Opening claim text (preview).
What is claimed is: 1. A cathode for a lithium secondary battery, comprising: a current collector; a first composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the current collector; and a second composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the first composite layer, wherein a specific surface area of the olivine-type lithium i…
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Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H01M4/136Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9178209B2 cover?
- Disclosed is a cathode for a lithium secondary battery and a lithium secondary battery comprising the same. The cathode for a lithium secondary battery may include a current collector, a first composite layer formed from a mixture of olivine-type lithium iron phosphate cathode active material powder and a binder on the current collector, and a second composite layer formed from a mixture of oli…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/136. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).