• 专利标题:   High power high specific capacity lithium sulfur battery anode material preparation method for e.g. portable electronic device, involves filtering, washing and drying reaction solution to obtain graphene coated sulfur particles.
  • 专利号:   CN102709533-A
  • 发明人:   CHEN G, DENG Y, SHI Z, XU H
  • 专利权人:   UNIV HUOYINGDONG RES INST HONG KONG SCI
  • 国际专利分类:   H01M004/38
  • 专利详细信息:   CN102709533-A 03 Oct 2012 H01M-004/38 201304 Pages: 11 Chinese
  • 申请详细信息:   CN102709533-A CN10192197 12 Jun 2012
  • 优先权号:   CN10192197

▎ 摘  要

NOVELTY - The method involves mixing concentrated sulfuric acid, concentrated nitric acid and graphite in a container to form solution. Potassium permanganate and hydrogen peroxide are added in the solution. The solution is filtered and washed until pH value of the solution is 5 to 7 so as to remove all kinds of ion impurities contained in the solution. An active agent is dripped into reaction solution, and graphene oxide solution is added and stirred at 500 to 1200 revolutions per minute. The reaction solution is filtered, washed and dried to obtain graphene coated sulfur particles. USE - Method for preparation of anode material for a high power high specific capacity lithium sulfur battery used in a portable electronic device, an electric vehicle and an energy storage device. ADVANTAGE - The battery has convenient operation and better material performance, and large scale industrial production. The anode material is prepared with high sulfur content, high discharge specific capacity, high power density, better cycle performance, and wide application range. DESCRIPTION OF DRAWING(S) - The drawing shows a microscopic view of an anode material of a high power high specific capacity lithium sulfur battery.