リチウム二次電池用負極材料、リチウム二次電池用の負極活物質層用組成物、リチウム二次電池用負極及びリチウム二次電池の製造方法

Title:

リチウム二次電池用負極材料、リチウム二次電池用の負極活物質層用組成物、リチウム二次電池用負極及びリチウム二次電池の製造方法

Document Type and Number:

Japanese Patent JP6505464

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a negative material for a lithium secondary battery having sufficient charging/discharging capacity, coulomb efficiency and cycle characteristic with a simpler method.SOLUTION: A method of manufacturing a negative material for a lithium secondary battery which contains conductive carbon particles, silicon material and carbon nanotube comprises: (1) a step of mixing conductive carbon particles, silicon material and carbon nanotube to obtain a composite body, (2) a step of dry-blending the composite body obtained in the step (1), graphite and pitch, and (3) a step of subjecting the mixture obtained in the step (2) to a heat treatment at a thermal decomposition temperature of the pitch or more.SELECTED DRAWING: None

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Inventors:

Hitoshi Nishino
Hiroyuki Fujimoto
Yasunori Mori

Application Number:

JP2015032057A

Publication Date:

April 24, 2019

Filing Date:

February 20, 2015

Export Citation:

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Assignee:

OSAKA GAS CO.,LTD.

International Classes:

H01M4/38; B82Y30/00; B82Y40/00; C01B32/15; C01B32/152; C01B32/205; C01B33/02; H01M4/36; H01M4/587

Domestic Patent References:

JP2003223892A
JP2005310760A
JP2014532263A

Foreign References:

WO2013183187A1
WO2015019994A1
WO2014122748A1
WO2015091968A1

Attorney, Agent or Firm:

Patent Business Corporation Saegusa International Patent Office

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