• 专利标题:   Preparing high-quality reduced graphene oxide used for manufacturing button lithium battery, involves mixing graphite and concentrated sulfuric acid, adding potassium permanganate, using strong flow pulse electron beam, and vacuuming.
  • 专利号:   CN111646462-A
  • 发明人:   GAO B, LI K, SUN Y, YIN J, FU H, ZHU G, LIU Z
  • 专利权人:   UNIV NORTHEASTERN
  • 国际专利分类:   C01B032/19, H01M010/04, H01M010/0525, H01M004/133, H01M004/1393, H01M004/587
  • 专利详细信息:   CN111646462-A 11 Sep 2020 C01B-032/19 202078 Pages: 7 Chinese
  • 申请详细信息:   CN111646462-A CN10317719 21 Apr 2020
  • 优先权号:   CN10317719

▎ 摘  要

NOVELTY - Method for preparing high-quality reduced graphene oxide using strong-flow pulsed electron beam, involves (a) preparing graphene oxide, uniformly mixing graphite and concentrated sulfuric acid, stirring under ice bath, adding potassium permanganate, performing water bath stirring, adding hydrogen peroxide for continuous stirring, adding hydrochloric acid and deionized water, performing centrifugal treatment, and preparing graphite oxide repeatedly for many times, adding obtained graphite oxide to ultrasonic instrument, and ultrasonically treating, (b) treating processed high-quality reduced graphene oxide using strong flow pulse electron beam to obtain high-quality reduced graphene oxide, using polyvinylidene fluoride as binder, uniformly stirring graphene oxide, uniformly mixing graphene oxide and polyvinylidene fluoride mixture, uniformly coating mixture of graphene oxide and polyvinylidene fluoride on surface of metal base portion, starting beam device, and vacuuming. USE - The high-quality reduced graphene oxide is used for manufacturing button lithium battery (claimed). ADVANTAGE - The method improves the performance of the lithium ion battery, contributes idea for development of lithium ion battery, broadens the application range of high current pulsed electron beam technology, converts the high current pulsed electron beam technology which is usually applied to surface modification of metal materials and surface purification and impurity removal to clean and high-temperature reduction technology, and ensures far-reaching influence on application mode of high current pulsed electron beam technology. DETAILED DESCRIPTION - Method for preparing high-quality reduced graphene oxide using strong-flow pulsed electron beam, involves (a) preparing graphene oxide, uniformly mixing graphite and concentrated sulfuric acid, stirring under ice bath, uniformly mixing, adding potassium permanganate for ice bath stirring, and performing water bath stirring, adding hydrogen peroxide for continuous stirring, adding hydrochloric acid and deionized water, performing centrifugal treatment on sample, and preparing graphite oxide repeatedly for many times, adding obtained graphite oxide to ultrasonic instrument, and ultrasonically treating to obtain graphene oxide, (b) treating processed high-quality reduced graphene oxide using strong flow pulse electron beam to obtain high-quality reduced graphene oxide, using polyvinylidene fluoride as binder, uniformly stirring prepared graphene oxide, uniformly mixing graphene oxide and polyvinylidene fluoride mixture, uniformly coating mixture of graphene oxide and the polyvinylidene fluoride on surface of metal base portion, starting strong current pulse electron beam device, vacuuming equipment, setting the acceleration voltage to 15-30 kV in energy density of 2-4 J/cm, the pulse frequency is 5-20 times, and prepared treated reduced graphene oxide using strong flow pulse electron beam. An INDEPENDENT CLAIM is included for a use of high-quality reduced graphene oxide prepared using above-mentioned method for manufacturing button lithium battery.