POSITIVE ELECTRODE MATERIALS USING DISORDERED MESOPOROUS CARBON, MANUFACTURING METHOD THEREOF AND SODIUM-SULFUR DIOXIDE SECONDARY BATTERY HAVING THE SAME

摘要

The present invention relates to a positive electrode active material produced by using a porous carbon structure, a method for producing the same, and a sodium-sulfur dioxide (Na-SO_2) secondary battery. The purpose of the present invention is to provide the sodium-sulfur dioxide secondary battery which can be used at room temperature and has increased energy density and lifespan properties. According to the present invention, the sodium-sulfur dioxide secondary battery includes: a negative electrode which contains sodium and is made of an inorganic material; a positive electrode which has the porous carbon structure synthesized by using sucrose and colloidal silica (nano-silicic acid) having a pore size of 20 nm as precursors; and sulfur dioxide-based inorganic electrolyte containing inorganic liquid electrolyte including sulfur dioxide (SO_2) and sodium salt. The positive electrode active material, synthesized by using sucrose and colloidal silica as precursors can increase a specific area and porosity compared to an existing porous carbon material.