A simple methodology for the quantification of graphite in end-of-life lithium-ion batteries using thermogravimetric analysis.A new method based on thermogravimetric analysis was developed to measure the graphite content in battery material mixture.  This approach exploits the thermochemical reduction of cathodic Li-transition metal oxides with anodic graphite at elevated temperatures under an inert atmosphere.  Thermal degradation profiles of industrial battery waste reflected those in the artificial system, demonstrating its applicability.  This work also demonstrates that thermogravimetric degradation profiles can distinguish between a cathode consisting of single or multiple Li-metal oxides. 
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