Title:
PRE-DOPING AGENT FOR POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING PRE-DOPING AGENT
Document Type and Number:
WIPO Patent Application WO/2021/029357
Kind Code:
A1
Abstract:
This pre-doping agent for a power storage device is characterized by being made of a lithium feroxide represented by formula (1) and is characterized in that, in X-ray diffraction measurement, the half width of the diffraction peak at a diffraction angle (2θ) of 23.6 ± 0.5° is 0.06° to 0.17°. This configuration makes it possible: to suppress a reduction in the volume energy density of the power storage device; to reduce the manufacturing cost; to pre-dope lithium ions at a lower charging voltage and thereby suppress electrolyte decomposition; and to provide a pre-doping agent for a power storage device that has a large irreversible capacity and can be suitably used as a power storage device demonstrating a large state of charge and a large discharge capacity. (1) LixFeOy [In formula (1), x satisfies 3.5 ≤ x ≤ 4.7, and y satisfies 3.25 ≤ y ≤ 3.85]
Inventors:
KAKIMOTO YUTA (JP)
AOYAMA SHIN (JP)
AOYAMA SHIN (JP)
Application Number:
PCT/JP2020/030364
Publication Date:
February 18, 2021
Filing Date:
August 07, 2020
Export Citation:
Assignee:
TAYCA CORP (JP)
International Classes:
H01M4/62; H01G11/06; H01G11/50; H01G11/86; H01M4/13
Foreign References:
| CN101252043A | 2008-08-27 | |||
| JP2016012620A | 2016-01-21 | |||
| JP2020123460A | 2020-08-13 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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