Method for preparing polyanion type sodium battery positive electrode material on the basis of organic acid dissolution method
US-2024228319-A1 · Jul 11, 2024 · US
Sodium ion secondary battery
US2016118683A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016118683-A1 |
| Application number | US-201514879939-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 9, 2015 |
| Priority date | Oct 27, 2014 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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Abstract
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Provided is a sodium ion secondary battery excellent in a cycle characteristic. A sodium ion secondary battery includes a cathode, an anode and an electrolytic solution, wherein the cathode includes a composite oxide including Na as a cathode active material, and no less than 0.03 mol/L and no more than 0.35 mol/L of a compound including BF 4 anion is added to the electrolytic solution.
First claim
Opening claim text (preview).
1 . A sodium ion secondary battery comprising: a cathode; an anode; and an electrolytic solution, wherein the cathode comprises a composite oxide comprising Na as a cathode active material; and no less than 0.03 mol/L and no more than 0.35 mol/L of a compound comprising BF 4 anion is added to the electrolytic solution. 2 . The sodium ion secondary battery according to claim 1 , wherein the compound comprising BF 4 anion is at least one of NaBF 4 , LiBF 4 and (C 2 H 5 ) 4 NBF 4 . 3 . The sodium ion secondary battery according to claim 1 , wherein the cathode active material reaches 4.0 V or more of cathode potential in terms of sodium electrode potential in charging. 4 . The sodium ion secondary battery according to claim 1 , wherein the cathode active material comprises at least one of Co, Ni and Mn. 5 . The sodium ion secondary battery according to claim 1 , wherein the cathode active material comprises at least one of PO 4 , P 2 O 7 and SO 4 . 6 . The sodium ion secondary battery according to claim 5 , wherein the cathode active material is Na 4 M 3 (PO 4 ) 2 P 2 O 7 (M is at least one of Fe, Ni, Co and Mn). 7 . The sodium ion secondary battery according to claim 1 , wherein the electrolytic solution comprises no less than 0.5 mol/L and no more than 2.0 mol/L of NaPF 6 as an electrolyte salt.
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Classifications
- H01M10/054Primary
Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title
Positive electrodes · CPC title
characterised by the additives · CPC title
Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title
Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title
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- What does patent US2016118683A1 cover?
- Provided is a sodium ion secondary battery excellent in a cycle characteristic. A sodium ion secondary battery includes a cathode, an anode and an electrolytic solution, wherein the cathode includes a composite oxide including Na as a cathode active material, and no less than 0.03 mol/L and no more than 0.35 mol/L of a compound including BF 4 anion is added to the electrolytic solution.
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/054. 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).