NOVELTY - The electrochemical cell or battery (100) comprises: an anode; a cathode coupled to the anode; and an electrolyte solution configured to activate the anode and the cathode. The electrolyte solution comprises lithium dinitramide (LiDN) salt as a primary salt with a molarity of 0.8 M and vinylene carbonate (VC) additive having a weight concentration of 2% of the total weight of the electrolyte solution. A cycle of the cell includes a discharging operation that decreases a cell voltage of the electrochemical cell from an upper limit cut-off voltage to a lower limit cut-off voltage.    USE - The electrochemical cell or battery such as lithium or lithium-ion battery is useful in a motor vehicle.    ADVANTAGE - The electrochemical cell or battery has improved stability (stable discharge capacities even after several cycles), reduced water sensitivity and improved thermal stability, eliminates the risk of unintentionally producing hydrochloric acid using the electrolyte solution, and can be economically produced.    DETAILED DESCRIPTION - The electrochemical cell or battery (100) comprises: an anode; a cathode coupled to the anode; and an electrolyte solution configured to activate the anode and the cathode. The electrolyte solution comprises lithium dinitramide (LiDN) salt as a primary salt with a molarity of 0.8 M and vinylene carbonate (VC) additive having a weight concentration of 2% of the total weight of the electrolyte solution. A cycle of the electrochemical cell includes a discharging operation that decreases a cell voltage of the electrochemical cell from an upper limit cut-off voltage to a lower limit cut-off voltage by a constant discharge current flowing from the electrochemical cell during a predetermined time period at a predetermined temperature and further includes a charging operation that increases the cell voltage from the lower limit cut-off voltage to the upper limit cut-off voltage. A discharge capacity is defined as an amount of electric charge that is withdrawn from the electrochemical cell during the discharging operation. The VC additive utilized with the LiDN salt increases the discharge capacity as compared with a battery having LiDN as the sole salt. The VC additive utilized with the LiDN salt substantially maintains the discharge capacity during the first sixth cycles after manufacturing of the electrochemical cell is completed. A graph plotting the discharge capacity on a Y-axis, over the number of the cycles completed after the manufacturing of the electrochemical cell ranging from the second cycle to the sixth cycle on an X-axis, has a near flat or near zero slope. An INDEPENDENT CLAIM is included for an electrolyte solution for use in a battery.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic perspective view of a battery.    Electrochemical cell or battery (100)    Outer casing (105)    Terminal post corresponding to cathode (110)    Terminal post corresponding to anode (115)    Plug. (120)