Electrodeposition system and method incorporating an anode having a back side capacitive element
US-2015376812-A1 · Dec 31, 2015 · US
Anode active material for lithium secondary battery and preparation thereof
US2016056449A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016056449-A1 |
| Application number | US-201514933577-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 5, 2015 |
| Priority date | Apr 5, 2011 |
| Publication date | Feb 25, 2016 |
| Grant date | — |
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Abstract
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The present invention relates to an anode active material for a lithium secondary battery, comprising a carbon material, and a coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 μm or less. The inventive anode active material having a Sn-based domains coating layer on the surface of a carbon material can surprisingly prevent stress due to volume expansion which generates by an alloy of Sn and lithium. Also, the inventive method for preparing an anode active material can easily control the thickness of the coating layer.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for preparing an anode active material for a lithium secondary battery, the method comprising: disposing a main electrode and a counter electrode in an electroplating bath and filling the electroplating bath with an electroplating electrolyte; and dispersing a carbon material in the electroplating electrolyte and then applying an electric current to form a coating layer having a plurality of Sn-based domains having an average diameter of 1 μm or less on the surface of particles of the carbon material. 2 . The method according to claim 1 , wherein the electroplating electrolyte is an acid-based Ni—Sn, Sn—Zn, Sn—Co or Sn—Pb plating solution; a sulfate-based Sn plating solution; hydrochloride-based Sn plating solution; a sulfonate-based Sn, Sn—Pb or Sn—Bi plating solution; a cyanide-based Sn—Cu or Sn—Ag plating solution; or a pyrophosphate-based Sn, Sn—Cu, Sn—Pb or Sn—Zn plating solution.
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Classifications
of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
- C25D3/30Primary
of tin · CPC title
Tin or alloys based on tin · CPC title
- H01M4/0452Primary
from solutions · CPC title
Li-accumulators · CPC title
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- What does patent US2016056449A1 cover?
- The present invention relates to an anode active material for a lithium secondary battery, comprising a carbon material, and a coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 μm or less. The inventive anode active material having a Sn-based domains coating layer on the surface of a carbon material…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C25D3/30. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 25 2016 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).