Polyimide-based binder for power storage device, electrode mixture paste, negative electrode active material layer, negative electrode sheet for power storage device, and power storage device
US-12176543-B2 · Dec 24, 2024 · US
Electrode for sodium molten-salt battery and sodium molten-salt battery
US9755240B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9755240-B2 |
| Application number | US-201314765164-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 17, 2013 |
| Priority date | Feb 4, 2013 |
| Publication date | Sep 5, 2017 |
| Grant date | Sep 5, 2017 |
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Abstract
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Provided is an electrode for a sodium molten-salt battery in which degradation of the electrode can be suppressed even when charging and discharging are repeated, and which has excellent cycle characteristics. The electrode for a sodium molten-salt battery includes a current collector and an electrode mixture adhering to a surface of the current collector, in which the electrode mixture includes an electrode active material and a binder containing a polymer, and the polymer does not contain a fluorine atom. The polymer can include, for example, at least one selected from the group consisting of polyamide resins and polyimide resins or at least one selected from the group consisting of acrylic resins, rubber-like polymers, and cellulose derivatives.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sodium molten-salt battery comprising a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte which has sodium ion conductivity at least at the time of being molten, wherein the electrolyte contains at least a salt of an anion including a bis(sulfonyl)imide anion and a sodium ion; the negative electrode includes a negative electrode current collector and a negative electrode mixture adhering to a surface of the negative electrode current collector, the negative electrode mixture including a negative electrode active material and a binder containing a polymer; and the polymer does not contain a fluorine atom. 2. A charging and discharging method for a sodium molten-salt battery, wherein the sodium molten-salt battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte which has sodium ion conductivity at least at the time of being molten; the electrolyte contains at least a salt of an anion including a bis(sulfonyl)imide anion and a sodium ion; the negative electrode includes a negative electrode current collector and a negative electrode mixture adhering to a surface of the negative electrode current collector, the negative electrode mixture including a negative electrode active material and a binder containing a polymer; and the polymer does not contain a fluorine atom, the charging and discharging method comprising a step of charging and discharging the sodium molten-salt battery in the state of being heated in a temperature range of 40° C. to 190° C.
Assignees
Inventors
Classifications
Molten electrolytes used at high temperature · CPC title
Cells with molten salts · CPC title
Electricity · mapped topic
- H01M4/622Primary
being polymers · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
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- What does patent US9755240B2 cover?
- Provided is an electrode for a sodium molten-salt battery in which degradation of the electrode can be suppressed even when charging and discharging are repeated, and which has excellent cycle characteristics. The electrode for a sodium molten-salt battery includes a current collector and an electrode mixture adhering to a surface of the current collector, in which the electrode mixture include…
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01M4/622. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 05 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).