Title:
NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND ALKALI METAL ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2015/025785
Kind Code:
A1
Abstract:
This negative electrode material (100) is a carbonaceous negative electrode material which is to be used in an alkali metal ion battery. The negative electrode material (100) exhibits an average spacing between (002) planes, d002, of 0.340nm or more as determined by an X-ray diffraction method using CuKα radiation as the radiation source, and satisfies requirement (A) and/or requirement (B). Requirement (A): When embedding the negative electrode material (100) in an epoxy resin, curing the epoxy resin, cutting and polishing the obtained cured product, and thus forming an exposed cross section of the negative electrode material (100), this exposed cross section has a first region (101) and a second region (103) which are different in the hardness determined by a microhardness test. Requirement (B): When embedding the negative electrode material (100) in an epoxy resin, curing the epoxy resin, cutting and polishing the obtained cured product, and thus forming an exposed cross section of the negative electrode material (100), this exposed cross section has a first region (101) and a second region (103) which are different in the peak intensities that are present on curves obtained by image analysis of an electron diffraction image observed through a transmission electron microscope and that correspond to the lattice constants of graphite.
Inventors:
ONO YUKIHARU (JP)
TAKEUCHI TAKESHI (JP)
TAKEUCHI TAKESHI (JP)
Application Number:
PCT/JP2014/071367
Publication Date:
February 26, 2015
Filing Date:
August 13, 2014
Export Citation:
Assignee:
SUMITOMO BAKELITE CO (JP)
International Classes:
H01M4/587; H01M4/36; H01M10/054
Foreign References:
| JP2012114024A | 2012-06-14 | |||
| JP2009084099A | 2009-04-23 | |||
| JP2009059676A | 2009-03-19 | |||
| JPH04249856A | 1992-09-04 | |||
| JP2014132555A | 2014-07-17 | |||
| JP2014132556A | 2014-07-17 | |||
| JP2014154290A | 2014-08-25 |
Attorney, Agent or Firm:
HAYAMI SHINJI (JP)
Shinji Hayami (JP)
Shinji Hayami (JP)
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