METHOD FOR MANUFACTURING ALL-SOLID TYPE SECONDARY BATTERY

Japanese Patent JP2016081790

A

PROBLEM TO BE SOLVED: To provide an all-solid type secondary battery manufacturing method which enables the manufacturing of an all-solid type secondary battery with enhanced cycle characteristics.SOLUTION: An all-solid type secondary battery manufacturing method comprises the steps of: an assembly step for assembling a battery having positive and negative electrodes, and a sulfide solid electrolyte layer disposed therebetween; an initial charging step for initially charging the battery thus assembled with a constant current and a constant voltage; a constant-voltage charging step for charging the battery with a constant voltage subsequently to the initial charging step; and an initial discharging step for initially discharging the battery with a constant current and a constant voltage subsequently to the constant-voltage charging step. The constant-voltage charging step is a step for charging the battery with the constant voltage while applying a binding pressure of 0.1-10 MPa to the battery under a temperature environment of 40-60°C; the capacity charged in the constant-voltage charging step is 5-10% of a discharge capacity of the battery identified when the battery is initially discharged with the constant current and the constant voltage without performing the constant-voltage charging step.SELECTED DRAWING: Figure 1

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MIZUTANI SATOSHI
HAMA SHIGEKI

JP2014213357A

May 16, 2016

October 20, 2014

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TOYOTA MOTOR CORP

H01M10/0585; H01M4/36; H01M4/505; H01M4/525; H01M4/62; H01M10/0562

Noriyuki Yamamoto
Akihiko Yamashita
Kishimoto Tatsuto

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