MANUFACTURING METHOD OF LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a simple manufacturing method of a lithium secondary battery composed by uniformly coating a positive electrode with a conductive polymer.

SOLUTION: This manufacturing method of a lithium secondary battery provided with a positive electrode, a negative electrode and an electrolyte is characterized by including: a monomer addition process of including a polymerizable compound being a monomer of a conductive polymer having an electrolytically polymerizable property in the electrolyte; and a polymerization process of polymerizing the polymerizable compound in the positive electrode by imparting potential thereto with the positive electrode brought into contact with the electrolyte. The need of employing a dedicated device executing a process of coating the positive electrode with the conductive polymer is obviated by executing a polymerization reaction with the monomer of the conductive polymer included in the electrolyte. The manufacturing method has an advantage of obviating the need to introduce any additive or any device for the purpose of executing polymerization by employing electrolytic polymerization progressing polymerization by using a difference of potential present in the battery as a polymerization reaction.

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