NOVELTY - An electrical storage device consists of electrolyte solution containing electrolytic salt and organic solvent, negative electrode (110) and positive electrode (101) containing nitroxyl compound, which includes nitroxyl cation and nitroxyl radical. The nitroxyl cation and nitroxyl radical have specific structures at oxidized state and reduced state, respectively, and are reacted to deliver and receive an electron between two states. The negative electrode has coating film formed by decomposition of 1,3-propane sultone and/or vinylene carbonate before assembly of the device.    USE - Electrical storage device. Uses include but are not limited to notebook computer, mobile phone, electric vehicle, hybrid electric vehicle, solar energy, wind power generation and household electric appliance.    ADVANTAGE - The electrical storage device has high output and excellent reliability at high temperature.    DETAILED DESCRIPTION - An electrical storage device consists of an electrolyte solution containing an electrolytic salt and an organic solvent, a negative electrode and a positive electrode containing a nitroxyl compound, which includes a nitroxyl cation and a nitroxyl radical. The nitroxyl cation has a partial structure of formula: asterisk-N+(=O)-asterisk (I), at an oxidized state. The nitroxyl radical has a partial structure of formula asterisk-N-(=O)-asterisk (II), at a reduced state. The nitroxyl cation and the nitroxyl radical are reacted to deliver and receive an electron between two states. The negative electrode has a coating film, which is formed by decomposition of 1,3-propane sultone and/or vinylene carbonate before the assembly of the device. An INDEPENDENT CLAIM is included for manufacture of electrical storage device.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the lamination-type electrical storage device.    Positive electrode (101)    Electrical power collector (103)    Electrode lead (104)    Separator (105)    Negative electrode (110)