Fig. 1
a Conceptual figure illustrating the heat and current post-treatment for filtrated, exfoliated graphite sheets. b Preparation process of the exfoliated graphite sheet from as-purchased graphite flakes to an exfoliated graphite dispersion and to sheet. c Primary components (chamber, heater, and electrodes) of the treatment apparatus (left) and the two configurations for passing current in-plane or through-plane (right)