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  • 专利标题:   Cathode active material useful in secondary battery, comprises silicon inner core whose surface is coated with first coating layer, where first coating layer is carbon-containing layer, and second coating layer coated on first coating layer, where second coating layer is sulfur single layer.
  • 专利号:   CN115842108-A, WO2023050837-A1, KR2023088792-A
  • 发明人:   HUANG Q, WEN Y, MA Q, GUAN Y, ZHAO Y, MA C Y, HWANG C
  • 专利权人:   NINGDE CONTEMPORARY AMPEREX TECHNOLOGY, CONTEMPORARY AMPEREX TECHNOLOGY LTD
  • 国际专利分类:   C01B017/02, C01B032/05, C01B033/02, H01M010/05, H01M010/0566, H01M004/36, H01M004/38, H01M004/62, H01M004/02, H01M004/134, H01M004/1395
  • 专利详细信息:   CN115842108-A 24 Mar 2023 H01M-004/36 202330 Chinese
  • 申请详细信息:   CN115842108-A CN11143669 28 Sep 2021
  • 优先权号:   CN11143669, KR716641

▎ 摘　　要

NOVELTY - Cathode active material comprises a silicon inner core; first coating layer coated on the surface of the silicon inner core, where first coating layer is a carbon-containing layer, and second coating layer coated on the surface of first coating layer, where second coating layer is a sulfur single layer. USE - The cathode active material is useful in secondary battery (claimed). ADVANTAGE - The material improves the energy density of secondary battery and prolongs the cycle life. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a preparation method of cathode active material; a secondary battery; a battery module; a battery pack; and an electric device.