Aqueous dual-ion secondary battery
US-2019036173-A1 · Jan 31, 2019 · US
Aqueous battery
US11522170B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11522170-B2 |
| Application number | US-202017099902-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 17, 2020 |
| Priority date | Nov 25, 2019 |
| Publication date | Dec 6, 2022 |
| Grant date | Dec 6, 2022 |
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.
Provided is an aqueous battery configured to use hydroxide ions (OH−) as carrier ions. The aqueous battery is an aqueous battery comprising a cathode layer, an anode layer and an aqueous liquid electrolyte, wherein the cathode layer contains, as a cathode active material, a graphite having a rhombohedral crystal structure; wherein the anode layer contains, as an anode active material, at least one selected from the group consisting of an elemental Zn, an elemental Cd, an elemental Fe, a Zn alloy, a Cd alloy, an Fe alloy, ZnO, Cd(OH)2, Fe(OH)2 and a hydrogen storage alloy; and wherein, as an electrolyte, at least one selected from the group consisting of KOH and NaOH is dissolved in the aqueous liquid electrolyte.
First claim
Opening claim text (preview).
The invention claimed is: 1. An aqueous secondary battery comprising a cathode layer, an anode layer and an aqueous liquid electrolyte, wherein the cathode layer contains, as a cathode active material, a graphite having a rhombohedral crystal structure; wherein the anode layer contains, as an anode active material, at least one selected from the group consisting of an elemental Zn, an elemental Cd, an elemental Fe, a Zn alloy, a Cd alloy, an Fe alloy, ZnO, Cd(OH) 2 , Fe(OH) 2 and a hydrogen storage alloy; and wherein, as an electrolyte, at least one selected from the group consisting of KOH and NaOH is dissolved in the aqueous liquid electrolyte. 2. The aqueous secondary battery according to claim 1 , wherein a volume-based median diameter (D50) of the graphite is from 7 μm to 30 μm. 3. The aqueous secondary battery according to claim 1 , wherein the graphite is a natural graphite or a pyrolytic graphite. 4. The aqueous secondary battery according to claim 1 , wherein a BET specific surface area of the graphite is 5.7 m 2 /g or more. 5. The aqueous secondary battery according to claim 1 , wherein the volume-based median diameter (D50) of the graphite is from 17 μm to 30 μm. 6. The aqueous secondary battery according to claim 1 , wherein the aqueous secondary battery is configured to be repeatedly charged and discharged. 7. The aqueous secondary battery according to claim 6 , wherein the aqueous secondary battery is a car battery.
Assignees
Inventors
Classifications
Construction or manufacture · CPC title
Energy storage using batteries · CPC title
- H01M10/28Primary
Construction or manufacture · CPC title
Hydrogen storage electrodes · CPC title
of inorganic oxides or hydroxides · 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 US11522170B2 cover?
- Provided is an aqueous battery configured to use hydroxide ions (OH−) as carrier ions. The aqueous battery is an aqueous battery comprising a cathode layer, an anode layer and an aqueous liquid electrolyte, wherein the cathode layer contains, as a cathode active material, a graphite having a rhombohedral crystal structure; wherein the anode layer contains, as an anode active material, at least …
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/28. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 06 2022 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).