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Title:
ACTIVE MATERIAL, METHOD FOR MANUFACTURING SAME, ELECTRODE, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/172604
Kind Code:
A1
Abstract:
An active material according to the present invention contains, as constituent elements: lithium; silicon; oxygen; a first element including at least one of boron and phosphorus; a second element including at least one of an alkali metal element (excluding lithium), a transition element, and a typical element (excluding lithium, silicon, oxygen, boron, phosphorus, an alkali metal element, and an alkaline-earth metal element); and a third element including an alkaline-earth metal element. The content of silicon in all constituent elements excluding lithium, oxygen, and carbon is 60-98 atomic%. The content of the first element in all constituent elements is 1-15 atomic%. The content of the second element in all constituent elements is 1-34 atomic%. The content of the third element in all constituent elements is 0-6 atomic%. In an XPS spectrum (binding energy (eV) on the horizontal axis and spectral intensity on the vertical axis) of Si2p as measured by using X-ray photoelectron spectroscopy (XPS), a first peak having an apex in a binding energy range of 100-102 eV is detected. In a Raman spectrum (Raman shift (cm-1) on the horizontal axis and spectral intensity on the vertical axis) as measured by using Raman spectroscopy, a second peak having an apex in a Raman shift range of 600 cm-1 to 640 cm-1, inclusive, is detected.

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Inventors:
ITO DAISUKE (JP)
Application Number:
PCT/JP2021/047211
Publication Date:
August 18, 2022
Filing Date:
December 21, 2021
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M4/36; H01M4/58
Domestic Patent References:
WO2011138964A12011-11-10
WO2013018721A12013-02-07
WO2014200063A12014-12-18
Foreign References:
JP2013047162A2013-03-07
JP2013067543A2013-04-18
JP2019518311A2019-06-27
JP2014051418A2014-03-20
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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