Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/026642
Kind Code:
A1
Abstract:
The present invention provides: a negative electrode active material which has a La3Ni2Sn7 crystal structure, while having a high weight energy density; and a lithium ion battery which uses this negative electrode active material. A negative electrode active material according to one embodiment of the present disclosure is contained in a negative electrode of a lithium ion battery, and is represented by general formula M3Me2X7 (wherein M comprises at least one of La and Ca; Me comprises at least one element that is selected from the group consisting of Mn, Ni, Fe and Co; and X comprises at least one element that is selected from the group consisting of Ge, Si, Sn and Al). With respect to the XRD pattern obtained by XRD measurement wherein Cu is used for an anticathode, the half-value width of the diffraction peak of the (1 17 1) plane of the negative electrode active material is 0.4713° or more.
Inventors:
ASANO KAZUKO
OKI YUKIHIRO
TAKEDA NANAMI
HIBINO MITSUHIRO
OKI YUKIHIRO
TAKEDA NANAMI
HIBINO MITSUHIRO
Application Number:
PCT/JP2022/023708
Publication Date:
March 02, 2023
Filing Date:
June 14, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/38; H01M10/052; H01M10/0562; H01M10/0565
Domestic Patent References:
| WO2021153401A1 | 2021-08-05 |
Foreign References:
| JP2009283370A | 2009-12-03 | |||
| JP2000311681A | 2000-11-07 | |||
| JP2006351516A | 2006-12-28 |
Other References:
SHINSUKE MATSUNO ET AL.: "La3Ni2Sn7 Ternary Intermetallic Phase for Lithium Insertion and Deinsertion", ELECTROCHEMICAL AND SOLID-STATE LETTERS, vol. 8, no. 4, 2005, pages A234 - A236, XP055850603, DOI: 10.1149/1.1870692
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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