NEGATIVE ELECTRODE CARBON MATERIAL FOR LITHIUM SECONDARY CELL, NEGATIVE ELECTRODE FOR LITHIUM CELL, AND LITHIUM SECONDARY CELL

Title:

NEGATIVE ELECTRODE CARBON MATERIAL FOR LITHIUM SECONDARY CELL, NEGATIVE ELECTRODE FOR LITHIUM CELL, AND LITHIUM SECONDARY CELL

Document Type and Number:

WIPO Patent Application WO/2015/146899

Kind Code:

A1

Abstract:

　In order to provide a negative electrode carbon material that yields a lithium secondary cell having improved charge rate characteristics, there is used a low-crystalline carbon material having pores formed in the surface thereof, particularly, a negative electrode carbon material for a lithium secondary cell comprising pitch coke, wherein the pores have an aperture of 20 nm-1 μm. The pores can be formed by heat-treating pitch coke in an oxidizing atmosphere.

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Inventors:

CHENG QIAN (JP)
TAMURA NORIYUKI (JP)

Application Number:

PCT/JP2015/058706

Publication Date:

October 01, 2015

Filing Date:

March 23, 2015

Export Citation:

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Assignee:

NEC CORP (JP)

International Classes:

H01M4/587; C01B31/02; H01M4/36; H01M4/38; H01M4/48

Domestic Patent References:

WO2009104681A1	2009-08-27
WO2012154183A1	2012-11-15

Foreign References:

JP2004055505A	2004-02-19
JPH0896796A	1996-04-12
JPH10326611A	1998-12-08
JPH11335673A	1999-12-07
JP2001332263A	2001-11-30

Attorney, Agent or Firm:

MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)

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