METHOD FOR MANUFACTURING ANODE FOR SECONDARY BATTERY

The present invention relates to a method for manufacturing an anode for a secondary battery, the method comprising the steps of: forming an anode structure including an anode current collector and an anode active material layer formed on the anode current collector; immersing the anode structure in...

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Bibliographic Details
Main Authors CHAE, Oh Byong, WOO, Sang Wook, KIM, Ye Ri
Format Patent
LanguageEnglish
French
Korean
Published 06.08.2020
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Summary:The present invention relates to a method for manufacturing an anode for a secondary battery, the method comprising the steps of: forming an anode structure including an anode current collector and an anode active material layer formed on the anode current collector; immersing the anode structure in a pre-lithiation solution in which a lithium metal counter electrode is immersed, the anode structure and the lithium metal counter electrode being spaced apart from each other; and performing a pre-lithiation process of the anode structure, the pre-lithiation process including an electrochemical charging process and an electrochemical discharging process performed after the electrochemical charging, wherein the state of charge, SOCP, of the anode structure which has been subjected to the pre-lithiation process is 5% to 50%. La présente invention porte sur un procédé destiné à fabriquer une anode pour une batterie secondaire, les étapes du procédé consistant : à former une structure d'anode incluant un collecteur de courant d'anode et une couche de matériau actif d'anode formée sur le collecteur de courant d'anode; à immerger la structure d'anode dans une solution de prélithiation dans laquelle est immergée une contrélectrode de métal de lithium, la structure d'anode et la contrélectrode de métal de lithium étant espacées l'une par rapport à l'autre; et à mettre en œuvre un processus de prélithiation de la structure d'anode, le processus de prélithiation consistant en un processus de charge électrochimique et en un processus de décharge électrochimique mis en œuvre après la charge électrochimique, l'état de charge (SOCP) de la structure d'anode qui a été soumise au processus de prélithiation étant compris entre 5 % et 50 %. 본 발명은 음극 집전체 및 상기 음극 집전체 상에 형성된 음극 활물질층을 포함하는 음극 구조체를 형성하는 단계; 상기 음극 구조체를 리튬 금속 대극이 침지된 전리튬화 용액에 상기 리튬 금속 대극과 이격되도록 침지시키는 단계; 및 상기 음극 구조체에 전기화학적 충전 공정 및 상기 전기화학적 충전 후 수행되는 전기화학적 방전 공정을 포함하는 전리튬화 공정을 수행하는 단계를 포함하고, 상기 전리튬화 공정이 수행된 음극 구조체의 잔존 용량 SOCP는 5% 내지 50%인 이차전지용 음극의 제조방법에 관한 것이다.
Bibliography:Application Number: WO2020KR01440