Title:
NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE SHEET FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/092141
Kind Code:
A1
Abstract:
This negative electrode material for a lithium ion secondary battery is characterised by comprising a mixture of: artificial graphite (A) for which the spacing (d(002)) of the (002) surface of the graphite structure, as measured using powder X-ray diffractometry, is in the range 0.335-0.339nm, and the particle diameter (D50) for which the volume total frequency of the particle size distribution measured using laser diffractometry is 50% is 4-10μm; and a carbon material (B) for which d(002) is at least 0.340nm, and D50 is 7-17μm and is greater than the D50 of the artificial graphite (A).
Inventors:
HARADA DAISUKE (JP)
TAKEUCHI MASATAKA (JP)
ISHII NOBUAKI (JP)
TONEGAWA AKIHISA (JP)
TAKEUCHI MASATAKA (JP)
ISHII NOBUAKI (JP)
TONEGAWA AKIHISA (JP)
Application Number:
PCT/JP2013/083288
Publication Date:
June 19, 2014
Filing Date:
December 12, 2013
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
H01M4/587; H01M4/133; H01M4/1393; H01M4/36
Foreign References:
| JP2008251523A | 2008-10-16 | |||
| JPH10284060A | 1998-10-23 | |||
| JPH10255766A | 1998-09-25 | |||
| JP2005209591A | 2005-08-04 | |||
| JPH05307977A | 1993-11-19 | |||
| JPH06318459A | 1994-11-15 | |||
| JPH09171814A | 1997-06-30 | |||
| JP2006338977A | 2006-12-14 |
Attorney, Agent or Firm:
OHIE Kunihisa et al. (JP)
Landlord Kunihisa (JP)
Landlord Kunihisa (JP)
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