Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, BATTERY MODULE, AND BATTERY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/053606
Kind Code:
A1
Abstract:
This nonaqueous electrolyte secondary battery (1) comprises a positive electrode (10), a negative electrode (20), and a nonaqueous electrolyte present between these electrodes. The positive electrode (10) comprises a current collector and a positive electrode active material layer (12) that includes at least one type of positive electrode active material particles present on one or both sides of the current collector. When 1000 cycles of constant current charging to an end voltage of 3.8 V or less and constant current discharging to an end voltage of 2.5 V are repeated at a 3C rate current value, at the point of a state of charge (SOC) of 50% on a discharge curve plotted such that the vertical axis represents the voltage and the horizontal axis represents the SOC of the cell, the voltage difference V1 - V2 between the voltage V1 of the first cycle and the voltage V2 of the 1000th cycle is 0.1 mV to 5.0 mV.
Inventors:
YOSHIKAWA HIKARU (JP)
IINO JUNYA (JP)
IINO JUNYA (JP)
Application Number:
PCT/JP2023/032239
Publication Date:
March 14, 2024
Filing Date:
September 04, 2023
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M10/052; H01M4/36; H01M4/58; H01M4/66; H01M10/0568
Foreign References:
| JP2015111513A | 2015-06-18 | |||
| JP2016134294A | 2016-07-25 | |||
| JP2016192371A | 2016-11-10 | |||
| US20180358661A1 | 2018-12-13 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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