Title:
NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERΥ
Document Type and Number:
WIPO Patent Application WO/2024/028994
Kind Code:
A1
Abstract:
A negative electrode material for a lithium ion secondary battery, said negative electrode material including graphite particles, wherein the graphite particles satisfy conditions in which, with regard to an R value which is the intensity ratio Id/Ig of the intensity Ig of the maximum peak in the range 1580 cm–1 to 1620 cm–1 and the intensity Id of the maximum peak in the range 1300 cm–1 to 1400 cm–1 in a Raman spectrum obtained through Raman spectroscopy, the percentage of particles for which R≥0.2 is greater than or equal to 10% by number, and the average value of the half-value width of Id in the R-value top 10 spectrum is less than or equal to 60 cm–1.
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Inventors:
ONUMA HIROO (JP)
MATSUMOTO YOSHIYUKI (JP)
TSUCHIYA HIDEYUKI (JP)
UCHIYAMA YOSHINORI (JP)
MATSUMOTO YOSHIYUKI (JP)
TSUCHIYA HIDEYUKI (JP)
UCHIYAMA YOSHINORI (JP)
Application Number:
PCT/JP2022/029714
Publication Date:
February 08, 2024
Filing Date:
August 02, 2022
Export Citation:
Assignee:
RESONAC CORP (JP)
International Classes:
H01M4/587
Foreign References:
| JP2010135314A | 2010-06-17 | |||
| JP2005197002A | 2005-07-21 | |||
| JP2018530495A | 2018-10-18 | |||
| JP2008143731A | 2008-06-26 | |||
| JP2001229914A | 2001-08-24 | |||
| JP2005306729A | 2005-11-04 | |||
| JP2010098020A | 2010-04-30 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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