Low temperature syntheses of glucose-derived activated carbons were carried out in order to synthesise highly disordered nanoporous carbons (See Methods). Importantly, both the hydrothermal carbonisation and the KOH chemical activation steps were carried out at the same temperature for each carbon, with the nomenclature HTC-X representing a hydrothermal carbon prepared at X ºC. A relatively long carbonisation and activation time (6 hours) was applied for sufficient carbonisation and activation in the low-temperature synthesis.