Title:
POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/070156
Kind Code:
A1
Abstract:
Provided is a positive electrode for a non-aqueous electrolyte secondary battery comprising a positive electrode mixture that includes a positive electrode active material and an adhesive having a polymer structure derived from vinylidene fluoride, the ATR-IR spectrum of the positive electrode mixture having an α peak that belongs to an α-crystal of the polymer structure in a wavelength range of 760-764 cm−1, and a β peak that belongs to a β-crystal of the polymer structure in a wavelength range of 838-842 cm−1, and the maximum absorption intensity H(α) of the α peak and the maximum absorption intensity H(β) of the β peak satisfying the relationship 0.2≤H(α)/H(β)≤5. This makes it possible to improve the capacity retention of the non-aqueous electrolyte secondary battery while retaining the capacity when a ferroelectric substance is used.
Inventors:
HARADA TOMOHIRO
Application Number:
PCT/JP2023/026791
Publication Date:
April 04, 2024
Filing Date:
July 21, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M4/62; C08L27/16; H01M4/13; H01M4/131; H01M4/505; H01M4/525
Attorney, Agent or Firm:
KAWASAKI & PARTNERS (JP)
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