- 专利标题： FAST-CHARGING ANODE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND PREPARING METHOD OF LITHIUM SECONDARY BATTERY COMPRISING SAME
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申请号： EP22904722.0申请日： 2022-12-09
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公开(公告)号： EP4447155A1公开(公告)日： 2024-10-16
- 发明人: JUNG, Myung Sun , LEE, Heon Young , CHOI, Hyun Ki , KIM, Dae Sik , KWON, Ki Min , PARK, Hyeonggu , LEE, Jae Hyeon
- 申请人： Posco Future M Co., Ltd
- 申请人地址： KR Pohang-si, Gyeongsangbuk-do 37918 110, Sinhang-ro Nam-gu
- 代理机构： Meissner Bolte Partnerschaft mbB
- 优先权： KR20210176507 20211210
- 国际公布： WO2023106893 20230615
- 主分类号： H01M4/36
- IPC分类号： H01M4/36 ; H01M4/587 ; H01M10/0525 ; C01B32/05 ; H01M4/02
摘要：
One embodiment provides a negative active material for lithium secondary battery, comprising:
a first coke with a Total Fibrosity Index (TFI) of 0.70 to 0.85 and a second coke with a Total Fibrosity Index (TFI) of 0.01 to 0.60 at a weight ratio of 4:1 to 50:1, and wherein, a lithium secondary battery containing the negative active material has an average voltage value of -0.16 V or more at the 40% of SOC (State of Charge), based on the entire battery charge capacity of 100%. Lithium secondary batteries containing the negative active material have excellent charge/discharge and rate characteristics.
a first coke with a Total Fibrosity Index (TFI) of 0.70 to 0.85 and a second coke with a Total Fibrosity Index (TFI) of 0.01 to 0.60 at a weight ratio of 4:1 to 50:1, and wherein, a lithium secondary battery containing the negative active material has an average voltage value of -0.16 V or more at the 40% of SOC (State of Charge), based on the entire battery charge capacity of 100%. Lithium secondary batteries containing the negative active material have excellent charge/discharge and rate characteristics.
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