Non-Aqueous Electrolytic Solutions and Electrochemical Cells Comprising the Same
US-2016301105-A1 · Oct 13, 2016 · US
Porous carbon having connecting mesopores and electrode
US10833358B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10833358-B2 |
| Application number | US-201916599534-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2019 |
| Priority date | Mar 11, 2015 |
| Publication date | Nov 10, 2020 |
| Grant date | Nov 10, 2020 |
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Abstract
Official abstract text for this publication.
To provide a non-aqueous electrolyte electricity-storage element including a positive electrode including a positive-electrode active material capable of inserting and releasing anions, a negative electrode including a negative-electrode active material capable of inserting and releasing cations, and a non-aqueous electrolyte, wherein the positive-electrode active material is porous carbon having pores having a three-dimensional network structure, and wherein a changing rate of a cross-sectional thickness of a positive electrode film including the positive-electrode active material defined by Formula (1) below is less than 45%.
First claim
Opening claim text (preview).
What is claimed is: 1. An electrode film comprising a porous carbon having connecting mesopores which have a three-dimensional network structure, wherein a changing rate of a cross-sectional thickness of the electrode film including the porous carbon is less than 45%, wherein the changing rate of the cross-sectional thickness is measured by: mixing the porous carbon, acetylene black, an acrylate-based latex, and carboxymethyl cellulose in a mass ratio of the porous carbon, the acetylene black, the acrylate-based latex, and the carboxymethyl cellulose based on each of solid contents is 100:7.5:3.0:9.5, to obtain a mixture; adding water to the mixture to obtain a slurry; applying the slurry onto one side of an aluminum foil; drying the applied slurry; cutting the dried slurry into a circle having a diameter of 16 mm to obtain the electrode film; and measuring the changing rate of the cross-sectional thickness defined by Formula (1), Changing rate of cross - sectional thickness ( % ) = Film thickness after charge - discharge - Film thickness before charge - discharge Film thickness before charge - discharge × 100 , Formula ( 1 ) wherein the charge-discharge in the Formula (1) is 50 cycles charge-discharge where charge is performed with cut-off voltage of 4.5V and discharge is performed with cut-off voltage of 1.5V. 2. The electrode film according to claim 1 , wherein the changing rate of the cross-sectional thickness is 20% or less. 3. The electrode film according to claim 1 , wherein the porous carbon is suitable for a non-aqueous electrolyte electricity-storage element, in which a discharge capacity of the non-aqueous electrolyte electricity-storage element under charge-discharge conditions of the non-aqueous electrolyte electricity-storage element is 50 mAh/g or greater but 140 mAh/g or less. 4. The electrode film according to claim 1 , wherein a BET specific surface area of the porous carbon is 50 m 2 /g or greater but 2,000 m 2 /g or less, and a pore volume of the porous carbon is 0.2 mL/g or greater but 2.3 mL/g or less. 5. The electrode film according to claim 1 , wherein a BET specific surface area of the porous carbon is 800 m 2 /g or greater but 1,800 m 2 /g or less, and a pore volume of
Assignees
Inventors
Classifications
Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
characterised by the solvents · CPC title
specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title
Li-accumulators · CPC title
- H01G11/04Primary
Hybrid capacitors · CPC title
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- What does patent US10833358B2 cover?
- To provide a non-aqueous electrolyte electricity-storage element including a positive electrode including a positive-electrode active material capable of inserting and releasing anions, a negative electrode including a negative-electrode active material capable of inserting and releasing cations, and a non-aqueous electrolyte, wherein the positive-electrode active material is porous carbon havi…
- Who is the assignee on this patent?
- Abe Naoto, Itoh Yoshio, Dan Tatsuya, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H01G11/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 10 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).