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Electrode material and secondary cell
US10290875B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10290875-B2 |
| Application number | US-201414905135-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2014 |
| Priority date | Jul 25, 2013 |
| Publication date | May 14, 2019 |
| Grant date | May 14, 2019 |
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- Title
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Abstract
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An electrode material for a secondary cell includes a porous carbon material having an absolute value of a differential value of a mass using a temperature as a parameter exceeding 0 at 360° C. and being 0.016 or more at 290° C. provided by thermally analyzing a mixture of the porous carbon material and S 8 sulfur at a mass ratio of 1:2.
First claim
Opening claim text (preview).
The invention claimed is: 1. A secondary cell, comprising: an electrode material, comprising a porous carbon material having an absolute value of a differential value of a mass with respect to a differential value of a temperature exceeding 0 at 360° C. and being 0.016 or more at 290° C. provided by thermogravimetrically analyzing a mixture of the porous carbon material and S 8 sulfur at a mass ratio of 1:2, wherein the secondary cell is a lithium-sulfur secondary cell, and wherein the electrode material supports sulfur or a sulfur compound. 2. The secondary cell according to claim 1 , wherein the porous carbon material includes a plant-derived material containing 5% by mass or more of silicon as a raw material. 3. The secondary cell according to claim 1 , wherein the porous carbon material includes a peat or a wood-based material as a raw material. 4. The secondary cell according to claim 1 , wherein the porous carbon material has a surface area of 10 m2/g or more by a nitrogen BET method, and has a pore volume of 0.1 cm3/g or more by a BJH method and an MP method. 5. The secondary cell according to claim 1 , wherein the porous carbon material has a half-value width of 5 degrees or less based on a diffraction angle of 2θ in a diffraction intensity peak of a (100) face or a (101) face by an X ray diffractometry. 6. The secondary cell according to claim 1 , wherein the electrode material is configured as a cathode.
Assignees
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Classifications
- H01M4/663Primary
containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title
Processes of manufacture · CPC title
- H01M4/13Primary
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
of elements or alloys · CPC title
Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
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- What does patent US10290875B2 cover?
- An electrode material for a secondary cell includes a porous carbon material having an absolute value of a differential value of a mass using a temperature as a parameter exceeding 0 at 360° C. and being 0.016 or more at 290° C. provided by thermally analyzing a mixture of the porous carbon material and S 8 sulfur at a mass ratio of 1:2.
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H01M4/663. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 14 2019 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).