The pyrolysis of 1,2-diphosphinobenzene at 800 °C gives a phosphorus-doped graphite (P-DG) with an unprecedented high phosphorus content, ca. 20 at%. In contrast with previously studied boron and nitrogen doped graphite materials, thorough characterisation and analysis of this material demonstrates that it is extensively disordered and contains substitutional P-atoms along with PO units in the host graphitic lattice, as well as P _(4) molecules trapped between the graphitic sheets. This represents a stabilised form of P _(4) , which has been shown to covalently bind to lithium as Li _(3) P in this material.
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