Manufacturing method of electrode assembly

Abstract

A manufacturing method of an electrode assembly capable of easily manufacturing a configuration in which an electrolyte and an active material are bonded to each other. A step of supplying, solidifying, and crystallizing a solid electrolyte including Li 2+X C 1−X B X O 3 (X represents a real number equal to or greater than 0 and smaller than 1), so as to be in contact with an active material aggregate including a communication hole between active material particles, is included. In a case where the solid electrolyte is melted, the solid electrolyte is heated in a range of 650 degrees to 900 degrees.

1 . A manufacturing method of an electrode assembly, the method comprising:
 a first step of forming an active material aggregate including a communication hole;   a second step of providing a solid material including Li 2+X C 1−X B X O 3  (X represents a real number exceeding 0 and equal to or smaller than 1) on the active material aggregate without using a solvent;   a third step of melting the solid material; and   a fourth step of solidifying and crystallizing a molten material of the solid material,   wherein the communication hole is filled with the molten material in the third step.   
     
     
         2 . The manufacturing method of an electrode assembly according to  claim 1 , wherein the solid material is heated at a temperature of 650° C. to 900° C. in the third step. 
     
     
         3 . The manufacturing method of an electrode assembly according to  claim 1 , wherein X in the Li 2+X C 1−X B X O 3  is 0.2 to 0.6. 
     
     
         4 . The manufacturing method of an electrode assembly according to  claim 1 , wherein the amount of the solid material is an amount with which a layer can be formed on the active material aggregate after the solidification and crystallization.