Method of manufacturing electrode-separator composite, electrode-separator composite manufactured by the manufacturing method and lithium secondary battery comprising the same
US-2015380706-A1 · Dec 31, 2015 · US
Power storage device
US2016118637A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016118637-A1 |
| Application number | US-201514919136-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 21, 2015 |
| Priority date | Oct 24, 2014 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
When cellulose is used as a separator, the cellulose is impregnated with an ionic liquid. Charge and discharge are repeated with this separator touching a surface of a current collector; then, the separator is changed in color. Thus, it is an object to provide a power storage device with a structure in which a side reaction other than a battery reaction, e.g., a change in color of separator, is unlikely to occur. In the power storage device, a separator impregnated with an ionic liquid is not in contact with a surface of a current collector. The separator has a tubular shape, a bag-like shape, or a sheet-like shape. The separator includes cellulose. The power storage device including the ionic liquid is non-volatile and non-flammable. The power storage device can be bent.
First claim
Opening claim text (preview).
What is claimed is: 1 . A power storage device comprising: a negative electrode; a positive electrode; a separator; and an ionic liquid, wherein the positive electrode comprises a first current collector and a first active substance provided on a surface of the first current collector, wherein the negative electrode comprises a second current collector and a second active substance provided on both surfaces of the second current collector, wherein the separator is not in contact with surfaces of the first current collector, wherein the separator surrounds the negative electrode, and wherein the separator is in contact with the ionic liquid. 2 . The power storage device according to claim 1 , wherein the separator has a tubular shape. 3 . The power storage device according to claim 1 , wherein the separator is impregnated with the ionic liquid. 4 . The power storage device according to claim 1 , wherein the separator includes cellulose. 5 . A power storage device comprising: a negative electrode; a positive electrode; a separator; and an ionic liquid, wherein the positive electrode comprises a first current collector and a first active substance provided on a surface of the first current collector, wherein the negative electrode comprises a second current collector and a second active substance provided on both surfaces of the second current collector, wherein the separator is not in contact with surfaces of the first current collector, wherein the separator has a hollow structure, wherein the negative electrode is in the hollow structure, and wherein the separator is in contact with the ionic liquid. 6 . The power storage device according to claim 5 , wherein the separator has a tubular shape. 7 . The power storage device according to claim 5 , wherein the separator is impregnated with the ionic liquid. 8 . The power storage device according to claim 5 , wherein the separator includes cellulose. 9 . A power storage device comprising: a negative electrode; a positive electrode; a separator; and an ionic liquid, wherein the negative electrode comprises a first current collector and a first active substance provided on a surface of the first current collector, wherein the positive electrode comprises a second current collector and a second active substance provided on both surfaces of the second current collector, wherein the separator is not in contact with surfaces of the first current collector, wherein the separator surrounds the positive electrode, and wherein the separator is in contact with the ionic liquid. 10 . The power storage device according to claim 9 , wherein the separator has a tubular shape. 11 . The power storage device according to claim 9 , wherein the separator is impregnated with the ionic liquid. 12 . The power storage device according to claim 9 , wherein the separator includes cellulose. 13 . A power storage device comprising: a negative electrode; a positive electrode; a separator; and an ionic liquid, wherein the negative electrode comprises a first current collector and a first active substance provided on a surface of the first current collector, wherein the positive electrode comprises a second current collector and a second active substance provided on both surfaces of the second current collector, wherein the separator is not in contact with surfaces of the first current collector, wherein the separator has a hollow structure, wherein the positive electrode is in the hollow structure, and wherein the separator is in contact with the ionic liquid. 14 . The power storage device according to claim 13 , wherein the separator has a tubular shape. 15 . The power storage device according to claim 13 , wherein the separator is impregnated with the ionic liquid. 16 . The power storage device according to claim 13 , wherein the separator includes cellulose.
Assignees
Inventors
Classifications
tubular or cylindrical · CPC title
arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives · CPC title
- H01M2/1673Primary
Electricity · mapped topic
characterised by the solvent · CPC title
characterised by the solute, e.g. salts, anions or cations therein · CPC title
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Frequently asked questions
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- What does patent US2016118637A1 cover?
- When cellulose is used as a separator, the cellulose is impregnated with an ionic liquid. Charge and discharge are repeated with this separator touching a surface of a current collector; then, the separator is changed in color. Thus, it is an object to provide a power storage device with a structure in which a side reaction other than a battery reaction, e.g., a change in color of separator, is…
- Who is the assignee on this patent?
- Semiconductor Energy Lab
- What technology area does this patent fall under?
- Primary CPC classification H01M2/1673. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).