Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Positive electrode active material for alkaline secondary battery and alkaline secondary battery including the positive electrode active material
US2017237065A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017237065-A1 |
| Application number | US-201715425816-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 6, 2017 |
| Priority date | Feb 12, 2016 |
| Publication date | Aug 17, 2017 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.
First claim
Opening claim text (preview).
What is claimed is: 1 . A positive electrode active material for an alkaline secondary battery, comprising: a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering a surface of the base particle, wherein: an X-ray absorption edge energy of the Mn detected within 6500 to 6600 eV by measurement with an XAFS (X-ray Absorption Fine Structure) method is 6548 eV or high. 2 . The positive electrode active material for an alkaline secondary battery according to claim 1 , wherein: a content of the Mn is 0.1% by mass or more and 2.0% by mass or less based on a quantity of the nickel hydroxide. 3 . The positive electrode active material for an alkaline secondary battery according to claim 1 , wherein: the conductive layer contains an alkali metal. 4 . The positive electrode active material for an alkaline secondary battery according to claim 3 , wherein: the alkali metal is Na. 5 . The positive electrode active material for an alkaline secondary battery according to claim 3 , wherein: the alkali metal is Na and Li. 6 . The positive electrode active material for an alkaline secondary battery according to claim 1 , wherein: the measurement with an XAFS method is XAFS measurement with a fluorescence yield method. 7 . An alkaline secondary battery comprising a container and an electrode group contained together with an alkaline electrolytic solution in the container, wherein: the electrode group comprises a positive electrode and a negative electrode laminated with a separator sandwiched therebetween, and the positive electrode contains the positive electrode active material for an alkaline secondary battery according to claim 1 .
Assignees
Inventors
Classifications
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
Nickel accumulators (H01M10/34 takes precedence) · CPC title
of nickel, cobalt or iron · CPC title
Positive electrodes · CPC title
Nickel oxide or hydroxide electrodes · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2017237065A1 cover?
- A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base partic…
- Who is the assignee on this patent?
- Fdk Corp, Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 17 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).