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Method for producing pitch coke for carbon negative electrode from coal tar pitch and method for producing carbon negative electrode and battery from pitch coke
Method for producing pitch coke for carbon negative electrode from coal tar pitch and method for producing carbon negative electrode and battery from pitch coke
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机译：由煤焦油沥青生产碳负极沥青焦的方法以及由沥青焦生产碳负极和电池的方法
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摘要
1. Fields to which the invention described in the claims belong;The present invention relates to a lithium secondary battery that is easy to charge and discharge.;2. The technical problem to be solved by the invention;Conventionally, coke prepared using petroleum pitch was used for carbon negative electrode. However, the phosphorus compound was added during the manufacturing process to produce a carbon negative electrode having excellent charging and discharging efficiency. By developing a method for producing a carbon nanoparticle, the carbon negative electrode having excellent charge and discharge efficiency can be produced without adding a phosphorus compound.;3. Summary of Solution to Invention;In the present invention, the carbon-based tar pitch is carbonized by primary heat treatment for 4 to 6 hours at a temperature of 480 to 520 ° C. in an atmosphere of a ball activated gas, followed by secondary treatment at 700 ° C. to 1200 ° C. for 1 to 2 hours. The above problems can be solved by manufacturing the carbon negative electrode using the coke obtained by performing heat treatment.;4. Important uses of the invention;The coke produced by the present invention is used for the production of a carbon negative electrode for a lithium-based secondary battery.
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