• 专利标题:   Negative active material for sodium secondary battery, comprises metal phosphate particles dispersed on graphene, and having ratio of number of metal phosphate particles having particle diameter and total number of metal phosphate particles.
  • 专利号:   US2017155130-A1, KR2017064318-A, US10305098-B2
  • 发明人:   KIM K B, ROH H K, KIM H K, KIM M S, NOH H K
  • 专利权人:   UNIV YONSEI IND FOUND, UNIV YONSEI IND FOUND, UNIV YONSEI IND ACADEMIC COOP FOUND, UNIV YONSEI IND FOUND
  • 国际专利分类:   H01M010/054, H01M004/04, H01M004/36, H01M004/58, H01M004/587, H01M004/66, C01B032/184, C01B025/45
  • 专利详细信息:   US2017155130-A1 01 Jun 2017 H01M-004/36 201739 Pages: 11 English
  • 申请详细信息:   US2017155130-A1 US297216 19 Oct 2016
  • 优先权号:   KR169947

▎ 摘  要

NOVELTY - A negative active material comprises graphene and metal phosphate particles dispersed on graphene surfaces, and having ratio of number of metal phosphate particles having a particle diameter of 10-40 nm to the total number of metal phosphate particles of 0.8 or more. USE - Negative active material for sodium secondary battery (claimed). ADVANTAGE - The negative material has improved electrical conductivity, high capacity due to the presence of metal phosphate having uniform size, and is economically prepared by simple method. The negative material provides the battery with improved electrochemical property and excellent charge and discharge capacity, and discharge retention. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of negative active material; and (2) sodium secondary battery.