Title:
SYNTHETIC GRAPHITE MATERIAL, SYNTHETIC GRAPHITE MATERIAL PRODUCTION METHOD, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/149251
Kind Code:
A1
Abstract:
A synthetic graphite material wherein the crystal grain size L(112) in the c-axis direction as calculated from a (112) diffraction line obtained by wide-angle X-ray diffraction is 4-30nm, the surface area based on volume as calculated by a laser diffraction-type particle size distribution measurement device is 0.22-1.70m2/cm3, the oil absorption is 67-147mL/100g, and the half-value width ΔνG is 19-24cm-1 for a peak appearing in the wavelength region of 1580cm-1±100cm-1 in Raman spectroscopy using argon ion laser light having a wavelength of 514.5nm.
Inventors:
SUZUKI TAKASHI (JP)
MAEDA TAKASHI (JP)
KARAKANE MITSUO (JP)
SHIRAI TAKAHIRO (JP)
KAWACHI HIROSHI (JP)
KIUCHI NORIYUKI (JP)
MAEDA TAKASHI (JP)
KARAKANE MITSUO (JP)
SHIRAI TAKAHIRO (JP)
KAWACHI HIROSHI (JP)
KIUCHI NORIYUKI (JP)
Application Number:
PCT/JP2020/000825
Publication Date:
July 23, 2020
Filing Date:
January 14, 2020
Export Citation:
Assignee:
JXTG NIPPON OIL & ENERGY CORP (JP)
International Classes:
C01B32/205; H01M4/587
Domestic Patent References:
| WO2015098754A1 | 2015-07-02 |
Foreign References:
| JP2015167118A | 2015-09-24 | |||
| JP2011065961A | 2011-03-31 | |||
| JP2016164862A | 2016-09-08 | |||
| JP2012216545A | 2012-11-08 | |||
| JP2019004663A | 2019-01-10 | |||
| JPS5415684B2 | 1979-06-16 |
Other References:
THE 51ST BATTERY SYMPOSIUM IN JAPAN 3G, vol. 15, 8 November 2010 (2010-11-08)
"Carbon Material for Negative Electrode for Lithium Ion Secondary Batteries", 20 October 1996, REALIZE CORPORATION, pages: 3 - 4
CARBON, 2006, pages 2 - 7
"JPI-5S-49-97", THE JAPAN PETROLEUM INSTITUTE, article "Hydrocarbon Type Test Method-High Performance Liquid Chromatograph Method"
See also references of EP 3912960A4
"Carbon Material for Negative Electrode for Lithium Ion Secondary Batteries", 20 October 1996, REALIZE CORPORATION, pages: 3 - 4
CARBON, 2006, pages 2 - 7
"JPI-5S-49-97", THE JAPAN PETROLEUM INSTITUTE, article "Hydrocarbon Type Test Method-High Performance Liquid Chromatograph Method"
See also references of EP 3912960A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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