| 摘要 |
PROBLEM TO BE SOLVED: To improve performance of a lithium-ion secondary battery.SOLUTION: A lithium-ion secondary battery 100A comprises: an anode collector 241A; and an anode active material layer 243A coated on the anode collector 241A. The anode active material layer 243A contains at least anode active material particles 710 and a binder 730, and the anode active material particles 710 are a carbon material. A ratio (A/B) of a BET specific surface area A of the anode active material particles 710 before coating to a BET specific surface area B of the anode active material layer 243A after coating is 1.17≤(A/B)≤1.88. |
