1 Scope

This part of IEC 62607 specifies the dispersion stability by using the zeta potential (ζ) method for nano-carbon materials for lithium-ion capacitors. This document describes not only the dispersion stability of nano-carbon materials but also the effect of different surfactants as well as the evaluation method for testing long-term dispersion stability using ζ. This document describes:

• Dispersion stability of nano-carbon materials using ζ for lithium-ion capacitors using carbon nanomaterials as electrodes

• Effect of different surfactants

• Evaluation of long-term dispersion stability using the ζ method