1. 平台首页
  2. 国际专利信息
  • 专利标题:   Positive electrode used for lithium secondary battery, comprises positive electrode current collector and positive electrode active material layer having active material particles and graphene oxide over positive electrode current collector.
  • 专利号:   US2017133673-A1, US9935313-B2
  • 发明人:   MIWA T, INOUE N, NOMOTO K, MOMO J
  • 专利权人:   SEMICONDUCTOR ENERGY LAB, SEMICONDUCTOR ENERGY LAB
  • 国际专利分类:   C01B025/30, C01B025/45, C30B029/14, C30B007/10, H01M010/0525, H01M004/36, H01M004/485, H01M004/62, C01B032/23, H01M004/02, H01M004/04, H01M004/1397, H01M004/583
  • 专利详细信息:   US2017133673-A1 11 May 2017 H01M-004/36 201733 Pages: 19 English
  • 申请详细信息:   US2017133673-A1 US409566 19 Jan 2017
  • 优先权号:   JP197021

▎ 摘　　要

NOVELTY - Positive electrode (100) comprises: positive electrode current collector (120); and positive electrode active material layer (110) over positive electrode current collector, where positive electrode active material layer includes many active material particles and graphene oxide (112) and active material particles are lithium containing composite oxide (111) having olivine structure in a X-ray diffraction spectrum of the positive electrode active material layer is greater than or equal to 4.5 and less than or equal to 5.5. USE - The positive electrode is useful for a lithium secondary battery (claimed). ADVANTAGE - The positive electrode provides lithium secondary battery that exhibits small memory effect, high energy density, high output voltage and high charge/discharge capacity and is smaller in size more lightweight than conventional secondary battery. DETAILED DESCRIPTION - Positive electrode (100) comprises: a positive electrode current collector(120); and a positive electrode active material layer (110) over the positive electrode current collector, where the positive electrode active material layer includes many active material particles and a graphene oxide (112) and active material particles are a lithium containing composite oxide (111) having an olivine structure, and a peak intensity ratio of a (020) diffraction to a (101) diffraction of the lithium containing composite oxide having the olivine structure in a X-ray diffraction spectrum of the positive electrode active material layer is greater than or equal to 4.5 and less than or equal to 5.5. An INDEPENDENT CLAIM is also included for a lithium secondary battery comprising a negative electrode, an electrolyte solution, and the positive electrode for the lithium secondary battery. DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of positive electrode. Positive electrode (100) Positive electrode active material layer (110) Lithium-containing composite oxide (111) Graphene oxide (112) Positive electrode current collector (120)