Method for manufacturing a polymer composite material and method for manufacturing a capacitor package structure using the polymer composite material

Abstract

The instant disclosure provides a polymer composite material, the method for manufacturing the polymer composite material, a capacitor package structure using the polymer composite material and the method for manufacturing the capacitor package structure. The polymer composite material is used for the cathode of a capacitor, wherein the polymer composite material includes poly(3,4-ethylenedioxythiophene), polystyrene sulfonate and a nanomaterial. Polystyrene sulfonate is connected between the nanomaterial and poly(3,4-ethylenedioxythiophene), and polystyrene sulfonate is bonded to the poly(3,4-ethylenedioxythiophene) through a polymerization process. The content of the nanomaterial ranges from 0.01-1.5 wt. % based on the weight of the polymer composite material.

What is claimed is: 
     
         1 . A method for manufacturing a polymer composite material, comprising:
 mixing a carbon nanomaterial with polystyrene sulfonate to form a carbon nanomaterial modified by polystyrene sulfonate;   adding 3,4-ethylenedioxythiophene into a solution comprising the carbon nanomaterial modified by polystyrene sulfonate; and   initiating a polymerization reaction to allow a reaction between 3,4-ethylenedioxythiophene and the carbon nanomaterial modified by polystyrene sulfonate in the solution for forming a product stream comprising the polymer composite material, the polymer composite material comprising a poly(3,4-ethylenedioxythiophene) unit, a polystyrene sulfonate unit and the carbon nanomaterial;   wherein the polystyrene sulfonate unit is connected between the poly(3,4-ethylenedioxythiophene) unit and the carbon nanomaterial, and the polystyrene sulfonate unit is bonded to the poly(3,4-ethylenedioxythiophene) unit through a polymerization process, the content of the nanomaterial ranging from 0.01-1.5 wt. % based on the weight of the polymer composite material.   
     
     
         2 . The method according to  claim 1 , wherein the step of initiating the polymerization reaction further comprises adding an oxidant into the solution. 
     
     
         3 . The method according to  claim 1 , wherein the step of initiating the polymerization reaction further comprises homogeneously stirring the solution comprising 3,4-ethylenedioxythiophene. 
     
     
         4 . The method according to  claim 1 , wherein before the step of mixing the carbon nanomaterial with polystyrene sulfonate, the method further comprises activating a surface of the carbon nanomaterial. 
     
     
         5 . The method according to  claim 1 , wherein after the step of initiating the polymerization reaction, the method further comprises purifying the product stream for separating the polymer composite material. 
     
     
         6 . The method according to  claim 5 , wherein the step of purifying the product stream comprises purifying the product by at least one of centrifugation, dialysis, column chromatography, precipitation and ion exchange process. 
     
     
         7 . The method according to  claim 5 , wherein after the step of purifying the product stream, the method further comprises homogeneously dispersing the polymer composite material. 
     
     
         8 . The method according to  claim 7 , wherein the step of homogeneously dispersing the polymer composite material comprises homogeneously dispersing the polymer composite material by at least one of a homogenous stirrer, ultrasonic grinder, high pressure homogenizer and ball mill. 
     
     
         9 . A method for manufacturing a capacitor package structure, comprising:
 providing at least a capacitor having a cathode comprising the polymer composite material manufactured by the method according to  claim 6 ; and   packaging the capacitor with a package structure, wherein a positive pin and a negative pin both electrically connected to the capacitor are exposed from the package structure.