Study On Erosion Of Industrial Synthetic LiCoO₂ On Fire-resistant Material Of Being Used

As one of the most important positive active material, Lithium ion battery is one of new green battery with a lot of advantages, light weight, high electric voltage, big energy ratio, low local action, long usage period and no environmental contaminated etc, was widely used variedly in cellular dynamoelectric facilities, electric technical motor, battery storage for large power plant, UPS power, medical instrument power and cosmic space, etc. According to the Stat. Of nation's authority department, the increase rate of Lithium ion battery was beyond 78.5%, the demand quantity of Lithium ion battery will go up to 40.6 hundred millions in the world. However, including a lot of small product factories, over 80% of the Lithium ion battery was synthesized by high temperature solid state reaction, with the method of which Co₃O₄ and Li₂CO₃ was put into kiln made of refractory material. Actually, long time's high temperature solid state reaction will easily lead to corrosion between synthesized LiCoO₂ and firebrick lining, which plays down the life of refractory material and influence the produce and quality of LiCoO₂ without doubt.In this paper, based on theory of material science and the series of material testing technique and method, the condition of reaction was analyzed including series of physical or chemic reaction, and the mechanism corrosion was studied. Finish the technological design finally. In order to reduce or prevent the corrosion between LiCoO₂ and firebrick lining, we constantly do a lot of experiments. The first step, study the reaction of corrosion;the second step, search the damage mechanism and resist the corrosive agent;the third step, bring forward refractory material's technological design.