Investigation of the properties of polymer composite bipolar plates in fuel cells
This work presents a comparative study of the effect of the polymer matrix on the thermal, electrical and mechanical properties of highly-filled graphite polymer composite. This material was destined to be used as bipolar plates in proton exchange membrane fuel cell (PEMFC). In order to investigate the synergetic effect between Gr (Graphite) and CB (carbon black) particles the polymer PVDF (poly (vinylidene fluoride)) was mixed with 15% wt of CB and 70% wt. of Gr. The results were offering a high value of the electrical conductivity (176 S/cm), while the value of the electrical conductivity of Gr/PVDF composite is about 87 S/cm. A correlation between the thermal and electrical conductivity was explored for the samples filled only with graphite (without CB).
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