Facile preparation method for polymer and exfoliated graphite composites and their application as conduction-promoting materials

Abstract

This paper introduces a new carbon material having high electrical conductivity and dispersibility, which is characterized by a partially exfoliated structure with grafted polymer and restacking ability through removal of the grafted polymer.

Sulfur-inserted polymer-anchored edge exfoliated graphite for durable positive electrodes for lithium–sulfur batteries

“…A similar phenomenon was observed for the thermal decomposition of the polymer anchor, where the PPG anchor showed significantly improved thermal stability up to ∼600 °C compared to that of pristine PPG ( T d = 250 °C (ref. 33 )) (Fig. S1 † ).…”

“…Polymer-anchored edge-exfoliated graphite (polymer-EExG) was synthesized following the previously reported method. 33 Polypropylene glycol (PPG, Sanyo Chemical) and polyethylene glycol (PEG, Sanyo Chemical) were selected as an anchoring polymer and decorated at the edge portion of the expanded graphite (PF8, Toyo Tanso) by radical trapping and subsequent heat treatment. The excess polymer was removed by treated the resultant composite at 500 °C for 120 min.…”