リチウム二次電池用負極活物質及びその製造方法

Title:

リチウム二次電池用負極活物質及びその製造方法

Document Type and Number:

Japanese Patent JP5744313

Kind Code:

B2

Abstract:

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.

Inventors:

U, Sun-Uk
Kim, Kite
Kwon, Yohan

Application Number:

JP2014502488A

Publication Date:

July 08, 2015

Filing Date:

April 05, 2012

Export Citation:

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