A non-aqueous liquid electrolyte secondary battery comprising an anode electrode and a cathode electrode, capable of intercalating and deintercalating lithium ions, and a non-aqueous liquid electrolyte, having high charging capacity, capable of maintaining excellent characteristics over a long period of time and excellent in discharge capacity retention in particular, is provided. The non-aqueous liquid electrolyte contains at least, at least, a carbonate having at least either an unsaturated bond or a halogen atom, and a compound of formula (III-1) A-N═C═O where A represents an element or group other than a hydrogen.