Method for manufacturing electrochemical device, and electrochemical device

Abstract

A method for manufacturing an electrochemical device includes the following steps: a step of preparing a positive electrode, the positive electrode including a first current collector and a positive electrode layer containing a conductive polymer; a step of preparing a negative electrode, the negative electrode including a second current collector and a negative electrode layer; and a step of sealing the positive electrode, the negative electrode, and an electrolytic solution in an exterior body. The step of preparing the positive electrode includes a step of holding the positive electrode in depressurized atmosphere and then introducing gas containing CO2 as a primary component into the depressurized atmosphere.

What is claimed is: 
     
         1 . A method for manufacturing an electrochemical device, the method comprising the steps of:
 preparing a positive electrode, the positive electrode including a first current collector and a positive electrode layer containing a conductive polymer;   preparing a negative electrode, the negative electrode including a second current collector and a negative electrode layer; and   sealing the positive electrode, the negative electrode, and an electrolytic solution in an exterior body, wherein the step of preparing the positive electrode includes a step of holding the positive electrode in depressurized atmosphere and then introducing gas containing CO 2  as a primary component into the depressurized atmosphere.   
     
     
         2 . A method for manufacturing an electrochemical device, the method comprising the steps of:
 preparing a positive electrode, the positive electrode including a first current collector and a positive electrode layer containing a conductive polymer;   preparing a negative electrode, the negative electrode including a second current collector and a negative electrode layer;   preparing a laminated body including the positive electrode and the negative electrode; and   sealing the positive electrode, the negative electrode, and an electrolytic solution in an exterior body,   wherein the step of preparing the laminated body includes a step of holding the laminated body in depressurized atmosphere and then introducing gas containing CO 2  as a primary component into the depressurized atmosphere.   
     
     
         3 . The method for manufacturing an electrochemical device according to  claim 1 , wherein the negative electrode layer contains a material configured to occlude and release a lithium ion. 
     
     
         4 . The method for manufacturing an electrochemical device according to  claim 2 , wherein the negative electrode layer contains a material configured to occlude and release a lithium ion. 
     
     
         5 . The method for manufacturing an electrochemical device according to  claim 1 , wherein a temperature at the depressurized atmosphere ranges from 15° C. to 120° C., inclusive, when the gas is introduced. 
     
     
         6 . The method for manufacturing an electrochemical device according to  claim 2 , wherein a temperature at the depressurized atmosphere ranges from 15° C. to 120° C., inclusive, when the gas is introduced. 
     
     
         7 . The method for manufacturing an electrochemical device according to  claim 1 , wherein the conductive polymer contains polyaniline or a derivative of polyaniline. 
     
     
         8 . The method for manufacturing an electrochemical device according to  claim 2 , wherein the conductive polymer contains polyaniline or a derivative of polyaniline.