• 专利标题:   Negative electrode for lithium-ion secondary battery comprises negative electrode current collector and negative electrode active material layer comprising negative electrode active material comprising lower layer facing surface of current collector and upper layer on lower layer.
  • 专利号:   WO2022080995-A1, KR2022050828-A, CN116235307-A
  • 发明人:   LEE S, PARK S, SHIN S, LEE Y, CHOI J, LEE S M, PARK S M, SHIN S Y, LEE Y J, HYEON C, LI L, SHEN S, PIAO S
  • 专利权人:   LG ENERGY SOLUTION LTD
  • 国际专利分类:   H01M010/052, H01M004/02, H01M004/131, H01M004/133, H01M004/36, H01M004/48, H01M004/587, H01M004/62
  • 专利详细信息:   WO2022080995-A1 21 Apr 2022 202237 Pages: 25
  • 申请详细信息:   WO2022080995-A1 WOKR014516 18 Oct 2021
  • 优先权号:   KR134444, CN80066796

▎ 摘  要

NOVELTY - Negative electrode for a lithium-ion secondary battery comprises a negative electrode current collector and a negative electrode active material layer comprising a negative electrode active material on at least one surface of the negative electrode current collector. The negative electrode active material layer comprises a lower layer facing the surface of the current collector and an upper layer arranged on the lower layer. The lower layer comprises graphite as an anode active material, and the upper layer comprises graphite and silicon oxide as an anode active material. The silicon oxide has a sphericity of 0.4-0.8 and the negative electrode comprises a linear conductive material. USE - As negative electrode for a lithium-ion secondary battery. ADVANTAGE - The negative electrode has an effect of improving lifetime characteristics and rapid charging characteristics of a battery.