This dataset supports the publication by B Liu, A L. Hector, W O. Razmus, R G.A. Wills - "Thermal Dependence of Hard Carbon Performance in Sodium Half-cells with 1 M NaClO4 in EC/DEC Electrolyte" in the journal: Batteries (issn:2303-0105) This dataset contains: The original data associated with each figure in the manuscript and supporting information.