Preparation of low-temperature graphite fluorides through decomposition of fluorinated-graphite intercalation compounds

Abstract

The decomposition of C x FCl y · zR (R = N2O4, N2O, SO2) fluorinated graphite intercalation compounds at 370–420 K leads to the formation of C x FCl y graphite fluorides with x close to 2 and y close to 0.1. The C x FCl y fluorides are first-stage compounds with an interlayer spacing of 0.60–0.61 nm. According to the synthesis conditions and their structure, these compounds can be classed with low-temperature C2F graphite fluorides. They are stable in air and inert atmospheres up to 720–750 and 750–780 K, respectively, which is comparable to the thermal stability of high-temperature CF and C2F graphite fluorides.