Method for sorting reuseable nonaqueous electrolyte secondary battery
US-2017038435-A1 · Feb 9, 2017 · US
Degraded performance recovery method for lithium ion secondary battery
US9958508B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9958508-B2 |
| Application number | US-201615225929-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2016 |
| Priority date | Aug 4, 2015 |
| Publication date | May 1, 2018 |
| Grant date | May 1, 2018 |
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Abstract
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Provided is a method by which the degraded performance of a lithium ion secondary battery containing phosphorus atoms (P) in a nonaqueous electrolytic solution can be restored by subjecting the lithium ion secondary battery in which a coating film including P is formed on a positive electrode surface, to a comparatively simple treatment. The degraded performance recovery method for a lithium ion secondary battery disclosed herein includes an ultrasound treatment step of applying ultrasound to the lithium ion secondary battery. In the ultrasound treatment step, the frequency of the generated ultrasound is 900 kHz or higher, and the period of time in which the ultrasound is applied to the lithium ion secondary battery continuously is 5 min or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A degraded performance recovery method for a lithium ion secondary battery including an electrode body having a positive electrode and a negative electrode and a nonaqueous electrolytic solution including phosphorus atoms (P), the method comprising: an ultrasound treatment step of applying ultrasound to the lithium ion secondary battery, wherein in the ultrasound treatment step, the frequency of the generated ultrasound is 900 kHz or higher, and a period of time in which the ultrasound is applied to the lithium ion secondary battery continuously is 5 min or more. 2. The degraded performance recovery method for a lithium ion secondary battery according to claim 1 , wherein the frequency of the generated ultrasound is 2000 kHz or less. 3. The degraded performance recovery method for a lithium ion secondary battery according to claim 1 , wherein the period of time in which the ultrasound is applied to the lithium ion secondary battery continuously is 30 min or less. 4. The degraded performance recovery method for a lithium ion secondary battery according to claim 1 , the method comprising, after the ultrasound treatment step, a confirmation step of acquiring an evaluation parameter with respect to the lithium ion secondary battery subjected to the ultrasound treatment and determining a degree at which the degradation of the battery performance has been eliminated on the basis of the acquired evaluation parameter.
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Recycling of batteries or fuel cells · CPC title
Determining battery ageing or deterioration, e.g. state of health · CPC title
- H01M10/4242Primary
Regeneration of electrolyte or reactants · CPC title
- G01R31/389Primary
Measuring internal impedance, internal conductance or related variables · CPC title
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- What does patent US9958508B2 cover?
- Provided is a method by which the degraded performance of a lithium ion secondary battery containing phosphorus atoms (P) in a nonaqueous electrolytic solution can be restored by subjecting the lithium ion secondary battery in which a coating film including P is formed on a positive electrode surface, to a comparatively simple treatment. The degraded performance recovery method for a lithium io…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 01 2018 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).