Title:
NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/054098
Kind Code:
A1
Abstract:
An electrode for secondary batteries according to one example of an embodiment is provided with a core body and a mixture layer that is formed on the core body. The mixture layer includes a first mixture layer and a second mixture layer disposed on the first mixture layer, and contains graphite and silicon material as active materials, and the content of the silicon material is 0.5 % by mass or more with respect to the active material. The ratio (τ2/τ1) of the tortuosity factor (τ2) of the second mixture layer to the tortuosity factor (τ1) of the first mixture layer is less than 1.1.
Inventors:
SOGA MASAHIRO
YAMAMOTO NORIHISA
SATO NAOMICHI
YAMAMOTO NORIHISA
SATO NAOMICHI
Application Number:
PCT/JP2022/035117
Publication Date:
April 06, 2023
Filing Date:
September 21, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/133; H01M4/13; H01M4/134; H01M4/36; H01M4/62
Domestic Patent References:
| WO2021132114A1 | 2021-07-01 | |||
| WO2019003835A1 | 2019-01-03 |
Foreign References:
| JP2015037008A | 2015-02-23 |
Other References:
SPECTROSCOPY JOHANNES, LANDESFEIND JOHANNES, HATTENDORFF ANDREAS, EHRL, EBNER MARTIN, ELDIVEN ASKIN, KEHRWALD DIRK, SHEARING PAUL : "Local Tortuosity Inhomogeneities in a Lithium Battery Composite Electrode You may also like Platelet size and density affect shear- induced thrombus formation in tortuous arterioles Jennifer K W Chesnutt and Hai-Chao Han - Tortuosity Determination of Battery Electrodes and Separators by Impedance of", JOURNAL OF THE ELECTROCHEMICAL SOCIETY JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 158, no. 12, 4 November 2011 (2011-11-04), pages 1393 - 1399, XP093053164
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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