• 专利标题:   Low-temperature and fast preparation of oligomeric graphene with large interlayer distance useful in cathode material for potassium ion battery, comprises preparing graphene oxide dispersion by Hummers method, drying, placing graphene oxide powder in tubular furnace and heating.
  • 专利号:   CN116022780-A
  • 发明人:   WANG Q, QIN M, YAN J
  • 专利权人:   UNIV HARBIN ENGINEERING
  • 国际专利分类:   B82Y030/00, B82Y040/00, C01B032/19, H01M010/0525, H01M004/587
  • 专利详细信息:   CN116022780-A 28 Apr 2023 C01B-032/19 202345 Chinese
  • 申请详细信息:   CN116022780-A CN10049960 01 Feb 2023
  • 优先权号:   CN10049960

▎ 摘  要

NOVELTY - Low-temperature and fast preparation of oligomeric graphene with large interlayer distance, comprises (i) preparing the graphene oxide (GO) dispersion by Hummers method as precursor, drying until the moisture content is 20-45% to obtain GO powder, and (ii) placing the GO powder in a tubular furnace, and heating to a certain temperature under the protection atmosphere to generate micro-explosion peeling. USE - The oligomeric graphene is useful in cathode material for potassium ion battery (claimed). ADVANTAGE - The method has excellent potassium storage performance, high structural stability, and buffering of volume expansion during electrochemical reactions. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing highly reduced oligomeric graphene with large interlayer distance; and Cathode electrode material for a potassium ion battery.