Lithium ion secondary battery
US-2017005369-A1 · Jan 5, 2017 · US
Lithium Ion Secondary Battery
US2017125844A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017125844-A1 |
| Application number | US-201615298407-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 20, 2016 |
| Priority date | Oct 30, 2015 |
| Publication date | May 4, 2017 |
| Grant date | — |
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Abstract
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Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; a separator; and an electrolyte solution. The positive electrode active material layer includes a positive electrode active material containing lithium nickel composite oxide. The electrolyte solution contains a disulfonic acid compound as an additive. A mass of the disulfonic acid compound adsorbed on the positive electrode is 1.0 g/m 2 or less per unit surface area of the lithium nickel composite oxide.
First claim
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What is claimed is: 1 . A lithium ion secondary battery comprising: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; a separator; and an electrolyte solution, wherein the positive electrode active material layer includes a positive electrode active material containing lithium nickel composite oxide, the electrolyte solution contains a disulfonic acid compound as an additive, and a mass of the disulfonic acid compound adsorbed on the positive electrode is 1.0 g/m 2 or less per unit surface area of the lithium nickel composite oxide. 2 . The lithium ion secondary battery according to claim 1 , wherein the positive electrode active material layer includes a positive electrode active material containing lithium manganese composite oxide, and a mass of the disulfonic acid compound adsorbed on the positive electrode is 0.04 to 0.6 g/m 2 per unit surface area of the lithium manganese composite oxide. 3 . The lithium ion secondary battery according to claim 1 , wherein the lithium nickel composite oxide is lithium nickel cobalt manganese composite oxide, and the lithium nickel cobalt manganese composite oxide has a layered crystal structure and is represented by a general formula Li x Ni y Co z Mn (1-y-z) O 2 in which x satisfies 1≦x≦1.2, y and z are positive numerals satisfying y+z<1, and y is 0.5 or less. 4 . The lithium ion secondary battery according to claim 1 , wherein the lithium manganese composite oxide is LiMn 2 O 4 . 5 . The lithium ion secondary battery according to claim 1 , wherein the electrolyte solution contains as an additive, a cyclic carbonate compound with an unsaturated bond and/or a cyclic carbonate compound with a halogen, and a total mass of the cyclic carbonate compound with the unsaturated bond and the cyclic carbonate compound with the halogen contained in the electrolyte solution per unit surface area of the lithium nickel composite oxide is more than the mass of the disulfonic acid compound adsorbed on the positive electrode per unit surface area of the lithium nickel composite oxide. 6 . The lithium ion secondary battery according to claim 1 , wherein the disulfonic acid compound is methylene methanedisulfonate. 7 . The lithium ion secondary battery according to claim 1 , a capacity of the lithium ion secondary battery is 5 Ah or more and 70 Ah or less.
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Classifications
the electrolyte being constituted of inorganic materials only · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
- H01M10/0567Primary
characterised by the additives · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
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- What does patent US2017125844A1 cover?
- Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; a separator; and an electrolyte solution. The positive electrode active material layer includes …
- Who is the assignee on this patent?
- Automotive Energy Supply Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0567. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu May 04 2017 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).