METHOD FOR MANUFACTURING SECONDARY BATTERY

• Main Authors: CHAE, Oh Byong, JEON, Seo Young, KIM, Ye Ri, LEE, Su Yeon, HWANG, Seung Hae
• Format: Patent
• Language: English; French; Korean
• Published: 02.09.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention provides a method for manufacturing a secondary battery, the method comprising the steps of: preparing a pre-lithiated cell containing a negative electrode and a lithium metal counter electrode and charging the pre-lithiated cell to pre-lithiate the negative electrode; separating the pre-lithiated negative electrode from the pre-lithiated cell and preparing an electrode assembly containing the pre-lithiated negative electrode and a positive electrode; immersing the electrode assembly into an electrolyte; primarily charging the immersed electrode assembly to activate same; removing a gas generated during the activation; discharging the activated electrode assembly immediately after the gas removal; and secondarily charging the discharged electrode assembly. La présente invention concerne un procédé de fabrication d'une batterie secondaire, le procédé comprenant les étapes consistant à : préparer une cellule pré-lithiée contenant une électrode négative et une contre-électrode métallique au lithium et charger la cellule pré-lithiée pour prélithier l'électrode négative ; séparer l'électrode négative pré-lithiée de la cellule pré-lithiée et préparer un ensemble électrode contenant l'électrode négative pré-lithiée et une électrode positive ; immerger l'ensemble électrode dans un électrolyte ; charger principalement l'ensemble électrode immergé pour l'activer ; éliminer un gaz généré pendant l'activation ; décharger l'ensemble électrode activé immédiatement après l'élimination de gaz ; et charger secondairement l'ensemble électrode déchargé. 본 발명은 음극 및 리튬 금속 대극을 포함하는 전리튬화 셀을 제조하고, 상기 전리튬화 셀을 충전시켜 상기 음극을 전리튬화시키는 단계; 상기 전리튬화 셀로부터 상기 전리튬화된 음극을 분리하고, 상기 전리튬화된 음극 및 양극을 포함하는 전극 조립체를 제조하는 단계; 상기 전극 조립체를 전해액에 함침시키는 단계; 상기 함침된 전극 조립체를 제1 충전하여 활성화시키는 단계; 상기 활성화에서 발생된 가스를 제거하는 단계; 상기 가스를 제거한 직후 상기 활성화된 전극 조립체를 방전시키는 단계; 및 상기 방전시킨 전극 조립체를 제2 충전하는 단계;를 포함하는 이차전지의 제조방법을 제공한다.