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US-2024429384-A1 · Dec 26, 2024 · US
Modified carbon black materials for lithium-ion batteries
US9368798B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9368798-B2 |
| Application number | US-201414274458-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 9, 2014 |
| Priority date | May 10, 2013 |
| Publication date | Jun 14, 2016 |
| Grant date | Jun 14, 2016 |
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Abstract
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A lithium (Li) ion battery comprising a cathode, a separator, an organic electrolyte, an anode, and a carbon black conductive additive, wherein the carbon black has been heated treated in a CO 2 gas environment at a temperature range of between 875-925 degrees Celsius for a time range of between 50 to 70 minutes to oxidize the carbon black and reduce an electrochemical reactivity of the carbon black towards the organic electrolyte.
First claim
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What is claimed is: 1. A method of treating carbon black to reduce an electrochemical reactivity of the carbon black towards an organic electrolyte, comprising: a. heat the carbon black in a CO 2 gas environment at a temperature range of between 600-1200 degrees Celsius for a time range of between 1 to 120 minutes to oxidize the carbon black surface and reduce the electrochemical reactivity; and b. measure the carbon black electrochemical reactivity using a cyclic voltammetry technique to determine an electrochemical current in response to an electrochemical polarization in the voltage range of between 2.5 to 5.0 volts versus a Li/Li + reference potential, wherein a treated carbon black produces an electrochemical current in a range of between −0.025 and +0.075 mA/cm 2 in the voltage range of between 2.5 to 4.75 volts. 2. The method of claim 1 , wherein a treated carbon black produces an electrochemical current in a range of between −0.025 and +0.025 mA/cm 2 in the voltage range of between 2.5 to 4.25 volts. 3. The method of claim 1 , wherein the carbon black has been heated treated in the CO 2 gas environment at the temperature of 900 degrees Celsius for the time of 60 minutes.
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Classifications
Chemistry & Metallurgy · mapped topic
Batteries in portable systems, e.g. mobile phone, laptop · CPC title
- H01M4/625Primary
Carbon or graphite · CPC title
Electric properties · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US9368798B2 cover?
- A lithium (Li) ion battery comprising a cathode, a separator, an organic electrolyte, an anode, and a carbon black conductive additive, wherein the carbon black has been heated treated in a CO 2 gas environment at a temperature range of between 875-925 degrees Celsius for a time range of between 50 to 70 minutes to oxidize the carbon black and reduce an electrochemical reactivity of the carbon…
- Who is the assignee on this patent?
- Kostecki Robert, Richardson Thomas, Boesenberg Ulrike, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/625. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 14 2016 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).