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Lithium secondary battery and binder for anode of the lithium secondary battery
US2019173086A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019173086-A1 |
| Application number | US-201816038054-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 17, 2018 |
| Priority date | Dec 1, 2017 |
| Publication date | Jun 6, 2019 |
| Grant date | — |
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Abstract
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Disclosed herein is a lithium secondary battery capable of improving an output characteristic, a life characteristic, and stability of electrode adhesion by using a binder containing dopamine-polymerized heparin in an anode containing silicon. In accordance with an aspect of the present disclosure, a lithium secondary battery includes: a cathode; an anode; a separation film disposed between the cathode and the anode; and an electrolyte, wherein the anode comprises a binder containing carboxymethyl cellulose (CMC), styrene-butadiene rubber (SBR), and polysaccharide including a sulfonate functional group and an amine group.
First claim
Opening claim text (preview).
What is claimed is: 1 . A lithium secondary battery comprising: a cathode; an anode; a separation film disposed between the cathode and the anode; and an electrolyte, wherein the anode comprises a binder containing carboxymethyl cellulose (CMC), styrene-butadiene rubber (SBR), and polysaccharide including a sulfonate functional group and an amine group. 2 . The lithium secondary battery according to claim 1 , wherein the binder comprises the CMC of 10 wt % or less (except for zero). 3 . The lithium secondary battery according to claim 1 , wherein the binder comprises the SBR of 10 wt % or less (except for zero). 4 . The lithium secondary battery according to claim 1 , wherein the binder comprises the CMC and the SBR of 10 wt % or less (except for zero). 5 . The lithium secondary battery according to claim 1 , wherein the polysaccharide comprises dopamine-polymerized heparin. 6 . The lithium secondary battery according to claim 5 , wherein the binder comprises dopamine-polymerized heparin of 20 wt % or less (except for zero). 7 . The lithium secondary battery according to claim 1 , wherein the binder comprises polysaccharide of 20 wt % or less (except for zero). 8 . The lithium secondary battery according to claim 1 , wherein the anode comprises graphite and silicon. 9 . A binder for an anode of a lithium secondary battery, comprising: carboxymethyl cellulose (CMC) of 10 wt % or less (except for zero); styrene-butadiene rubber (SBR) of 10 wt % or less (except for zero); and dopamine-polymerized heparin of 20 wt % or less (except for zero). 10 . The binder according to claim 9 , wherein a total content of the CMC and the SBR is 10 wt % or less (except for zero). 11 . The binder according to claim 9 , wherein a content of the CMC is 5 wt % or less (except for zero). 12 . The binder according to claim 9 , wherein a content of the SBR is 5 wt % or less (except for zero). 13 . The binder according to claim 9 , wherein a content of the dopamine-polymerized heparin is 10 wt % or less (except for zero).
Assignees
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Classifications
Polyolefins · CPC title
- H01M4/622Primary
being polymers · CPC title
Electrodes based on metals, Si or alloys · CPC title
Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
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Frequently asked questions
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- What does patent US2019173086A1 cover?
- Disclosed herein is a lithium secondary battery capable of improving an output characteristic, a life characteristic, and stability of electrode adhesion by using a binder containing dopamine-polymerized heparin in an anode containing silicon. In accordance with an aspect of the present disclosure, a lithium secondary battery includes: a cathode; an anode; a separation film disposed between the…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp, Univ Incheon Ind Acad Coop
- 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 Thu Jun 06 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).