Manufacturing method for capacitor

Abstract

A manufacturing method for a capacitor is provided. The method includes the following steps. A nano carbon material and an electrolyte solution are mixed to obtain an electrolyte composition. A porous substrate is immersed in the electrolyte composition. The electrodes are formed on two opposite surfaces of the porous substrate.

What is claimed is: 
     
         1 . A manufacturing method of a capacitor, comprising:
 mixing a nano carbon material and an electrolyte solution to obtain an electrolyte composition;   immersing a porous substrate in the electrolyte composition; and   forming electrodes on two opposite surfaces of the porous substrate.   
     
     
         2 . The method of  claim 1 , wherein a material of the porous substrate comprises melamine, polystyrene, polyurethane, polyethylene, ethylene-vinyl acetate copolymer, thermoplastic rubber, or polyvinyl chloride. 
     
     
         3 . The method of  claim 1 , wherein based on a total weight of the electrolyte composition, a content of the nano carbon material is between 1% and 10%. 
     
     
         4 . The method of  claim 1 , wherein the nano carbon material comprises expanded graphite or carbon aerogel. 
     
     
         5 . The method of  claim 4 , wherein the carbon aerogel comprises a particle having a particle size between 3 nm and 20 nm. 
     
     
         6 . The method of  claim 4 , wherein a porosity of the carbon aerogel exceeds 50%. 
     
     
         7 . The method of  claim 4 , wherein a specific surface area of the carbon aerogel is between 400 m 2 /g and 1000 m 2 /g. 
     
     
         8 . The method of  claim 1 , further comprising, after the porous substrate is immersed in the electrolyte composition, performing a drying process on the porous substrate immersed in the electrolyte composition. 
     
     
         9 . The method of  claim 1 , further comprising, before the porous substrate is immersed in the electrolyte composition, performing a cleaning process on the porous substrate.