Glycerol electro-oxidation on a carbon-supported platinum catalyst at intermediate temperatures

► A high oxidation current in glycerol electro-oxidation was observed at 250 °C. ► High selectivity for CO2 production was obtained at 250 °C. ► C-C bond dissociation ratio reached 70-80% at both low and high potentials. ► Stable operation during glycerol electro-oxidation at around 250 °C requires a high S/C ratio. ► The present observations provide strategies for the effective operation of DAFCs.