Preparation and Properties of PEDOT/PSS Conductive Polymer Blended with Graphene/PVDF

Abstract:

Graphene has unique structure and excellent performance , It has good optical, thermal, mechanical properties and electrical conductivity. In this article , based on elaborating the structure , characteristic and preparation methods of the graphene , the modification of graphene in polymer composite was discussed and the development and research direction of the graphene/polymer composite were proposed. The conductivity of poly (3,4-ethylenedioxythiophene) (PEDOT) doped with poly(4-styrenesulfonate) (PSS) blended with different ratios of graphene/PVDF (polyvinylidiene fluoride) solution was measured. After dryness, we found that an addition of graphene/PVDF solution lowered the resistance by three or four orders of magnitude when the concentration are 25wt% and 50wt% , among them the Gb50 has the best surface conductivity, the magnitude is about 1.43 S/cm, and then we found that the second onset degradation temperature of PEDOT/PSS membrane blended with graphene/PVDF was 75°C higher than that of without blended with graphene/PVDF. All kind of dispersion has been studied using a four-point probe conductive meter, X-ray diffractometry (XRD), fourier transform infrared (FTIR), thermogravimetric analysis(TGA) and scanning electrical microscopy (SEM) in order to discuss the surface resistance, the crystallinity, the chemical structure , the thermal properties and morphology of the PEDOT/PSS-graphene/PVDF film. Conductive PEDOT/PSS-graphene/PVDF membrane has good electrical properties and thermal stability , which can be used for the electrolyte of lithium battery.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1318-1326
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1318
• Online since: December 2012
• Authors: Chin Jung Lee*, I Shou Tsai
• Keywords: Graphen, Lithium Battery, Poly(3,4-Ethylenedioxythiophene)/Poly(4-Styrenesulfonate), Surface Resistance, Thermal Stability

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