Title:
GRAPHITE MATERIAL, CARBON MATERIAL FOR BATTERY ELECTRODE, AND BATTERY
Document Type and Number:
Japanese Patent JP2013155110
Kind Code:
A
Abstract:
To provide a graphite material as an electrode material of a secondary battery excellent in charge-discharge cycle characteristics and high-current load characteristics.
This graphite material is such that: when 200 locations in a rectangular area of 6 μm by 8 μm are arbitrarily selected on the graphite material surface image observed by a scanning electron microscope, cylindrical pores, which have an opening part shape with a diameter of 15 nm to 200 nm, roundness of 0.75 to 1.0, and a major axis/minor axis ratio of 1.0 to 1.5, are visible on the surface of the graphite material that appears in the area in at least two locations.
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Inventors:
WAKIZAKA YASUAKI (JP)
KAMIJOU YUUICHI (JP)
SOTOWA CHIAKI (JP)
SUDOH AKINORI (JP)
TANAKA MASAKO (JP)
TAKEUCHI MASATAKA (JP)
FUKAI TAKAYUKI (JP)
KAMIJOU YUUICHI (JP)
SOTOWA CHIAKI (JP)
SUDOH AKINORI (JP)
TANAKA MASAKO (JP)
TAKEUCHI MASATAKA (JP)
FUKAI TAKAYUKI (JP)
Application Number:
JP2013096935A
Publication Date:
August 15, 2013
Filing Date:
May 02, 2013
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C01B31/04; H01M4/587; H01M10/0525; H01M10/0565; H01M10/0569
Domestic Patent References:
| JPH02122828A | 1990-05-10 | |||
| JPH11219700A | 1999-08-10 | |||
| JP2005166325A | 2005-06-23 | |||
| JP2002170574A | 2002-06-14 |
Attorney, Agent or Firm:
Kunihisa Landlord
Atsushi Hayashi
Atsushi Hayashi