Fabrication of CNT Dispersion Fluid by Wet-Jet Milling Method for Coating on Bipolar Plate of Fuel Cell

Abstract EN

Water based carbon nanotube (CNT) dispersion was produced by wet-jet milling method.

Commercial CNT was originally agglomerated at the particle size of less than 1 mm.

The wet-jet milling process exfoliated CNTs from the agglomerates and dispersed them into water.

Sedimentation of the CNTs in the dispersion fluid was not observed for more than a month.

The produced CNT dispersion was characterized by the SEM and the viscometer.

CNT/PTFE composite film was formed with the CNT dispersion in this study.

The electrical conductivity of the composite film increased to 10 times when the CNT dispersion, which was produced by the wet-jet milling method, was used as a constituent of the film.

Moreover, the composite film was applied to bipolar plate of fuel cell and increased the output power of the fuel cell to 1.3 times.