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Title:
POSITIVE ELECTRODE MATERIAL AND MANUFACTURING METHOD THEREFOR, BATTERY USING POSITIVE ELECTRODE MATERIAL AND MANUFACTURING METHOD THEREFOR, AND ELECTRONIC EQUIPMENT USING BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/159262
Kind Code:
A1
Abstract:
This positive electrode material has, in X-ray diffraction (2θ=5°-90°) that uses radiated light having a wavelength 1Å, diffraction peaks located at 2θ = 13.1°±0.2°, 14.0°±0.2°, and 18.4°±0.2°, and has a monoclinic crystal structure belonging to a space group P21/c. The positive electrode material is represented by composition formula Li2-2xCo1+xP2O7 (-0.2≤x≤0.2).

Inventors:
KURITA, Tomochika (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 〒2118588, JP)
HOMMA, Kenji (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 〒2118588, JP)
HIDA, Masaharu (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 〒2118588, JP)
IWATA, Jiyunichi (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 〒2118588, JP)
Application Number:
JP2018/005102
Publication Date:
August 22, 2019
Filing Date:
February 14, 2018
Export Citation:
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Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-sh, Kanagawa 88, 〒2118588, JP)
International Classes:
H01M4/58
Domestic Patent References:
WO2013035572A12013-03-14
WO2014181436A12014-11-13
WO2011068255A12011-06-09
Foreign References:
JP2016038996A2016-03-22
Other References:
NISHIMURA, SHIN-ICHI ET AL.: "New Lithium Iron Pyrophosphate as 3.5V Class Cathode Material for Lithium Ion Battery", J. AM. CHEM. SOC., vol. 132, no. 39, 6 October 2010 (2010-10-06), pages 13596 - 13597, XP055634930
Attorney, Agent or Firm:
HIROTA, Koichi (HIROTA, NAGARE & ASSOCIATES 4th Floor, TS Bldg., 1-24-10, Yoyogi, Shibuya-k, Tokyo 53, 〒1510053, JP)
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