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Title:
POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, NON-AQUEOUS ELECTROLYTE POWER STORAGE ELEMENT, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL, AND METHOD FOR PRODUCING NON-AQUEOUS ELECTROLYTE POWER STORAGE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/163475
Kind Code:
A1
Abstract:
One embodiment of the present invention is a positive electrode active material which contains an oxide containing lithium and a transition metal element M, wherein: the transition metal element M is cobalt, iron, copper, manganese, nickel, chromium, or a combination thereof; and the ratio (Ia/Ib) of the peak intensity Ia which appears in the range in which 2θ is 20-25° to the peak intensity Ib which appears in the range in which 2θ is 30-35° in an X-ray diffraction pattern of the oxide is 0.2-0.8, inclusive.

Inventors:
MIZUNO YUSUKE (JP)
Application Number:
JP2019/003542
Publication Date:
August 29, 2019
Filing Date:
February 01, 2019
Export Citation:
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Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M4/525; C01G51/00; H01G11/06; H01G11/24; H01G11/46; H01G11/86; H01M4/505
Domestic Patent References:
WO2017183653A12017-10-26
Foreign References:
US20130171524A12013-07-04
JP2015107890A2015-06-11
JP2015032515A2015-02-16
Other References:
KOBAYASHI HIROAKI ET AL.: "Synthesis of Cu-doped Li2O and its cathode properties for lithium-ion batteries based on oxide/peroxide redox reactions", JOURNAL OF POWER SOURCES, vol. 340, 2017, pages 365 - 372, XP029842126, DOI: 10.1016/j.jpowsour.2016.11.050
KOBAYASHI HIROAKI ET AL.: "Improved performance of Co-doped Li2O cathodes for lithium-peroxide batteries using LiCo02 as a dopant source", JOURNAL OF POWER SOURCES, vol. 306, 2016, pages 567 - 572, XP029399149, DOI: 10.1016/j.jpowsour.2015.12.041
OGASAWARA YOSHIYUKI ET AL.: "Charge/discharge mechanism of a new Co-doped Li2O cathode material for a rechargeable sealed lithium-peroxide battery analyzed by X-ray absorption spectroscopy", JOURNAL OF POWER SOURCES, vol. 287, 2015, pages 220 - 225, XP029158110, DOI: 10.1016/j.jpowsour.2015.04.050
HARADA KOSUKE ET AL.: "Electrochemical reactions and cathode properties of Fe-doped Li20 for the hermetically sealed lithium peroxide battery", JOURNAL OF POWER SOURCES, vol. 322, 12 May 2016 (2016-05-12), pages 49 - 56, XP029553432, DOI: 10.1016/j.jpowsour.2016.04.141
OKUOKA SHIN-ICHI ET AL.: "A New Sealed Lithium-peroxide Battery with a Co-Doped LizO", SCIENCE REPORT, vol. 4, no. 5684, 14 July 2014 (2014-07-14), XP055632420
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