Significant results have been achieved in the research of graphene lithium-ion batteries

　　Since last year, graphene batteries have been heated up, and most of them have doubts or even doubts about graphene batteries. Are graphene batteries real? Yan Liqun, chairman of Beijing Carbon Century Technology Co., Ltd., said that the full name of graphene batteries should be graphene-modified lithium-ion batteries. There are four methods for making batteries. One is directly used in the negative electrode; the other is as a conductive additive for the positive electrode. , All lithium batteries must be added with conductive additives. Originally, conductive carbon black is added. Now, graphene is used to replace carbon black. It is relatively low-end. The third is to directly coat the surface of the positive electrode of the lithium battery because the positive electrode material of the lithium battery is metal oxide. After a long period of time, it will cause oxidation and decrease the conductivity. After the graphene is covered, this problem will be solved, and the microscopic conductivity will be improved, which cannot compare with the macroscopic metal conductivity. Fourth, it is directly used as the skeleton of the electrode material to increase the strength of the positive electrode material, and at the same time make the graphene become the bone of the positive electrode, which can improve the life of the lithium battery as a whole, improve the micro-conductivity and the safety performance of the battery. Kind of method.