Each half-cell has a characteristic voltage. Different choices of substances for each half-cell give different potential differences. Each reaction is undergoing an equilibrium reaction between different oxidation states of the ions—when equilibrium is reached the cell cannot provide further voltage. In the half-cell which is undergoing oxidation, the closer the equilibrium lies to the ion/atom with the more positive oxidation state the more potential this reaction will provide. Similarly, in the reduction reaction, the further the equilibrium lies to the ion/atom with the more negative oxidation state the higher the potential.
The cell potential can be predicted through the use of electrode potentials (the voltages of each half-cell). (See table of standard electrode potentials). The difference in voltage between electrode potentials gives a prediction for the potential measured.
Cell potentials have a possible range of about zero to 6 volts. Cells using water-based electrolytes are usually limited to cell potentials less than about 2.5 volts, because the very powerful oxidising and reducing agents which would be required to produce a higher cell potential tend to react with the water.
Wipo Publishes Patent of Li-Tec Battery for "Method and System for Producing an Electrochemical Cell and Battery with a Number of These Electrochemical Cells" (German Inventor)
Apr 19, 2013; GENEVA, April 19 -- Publication No. WO/2013/053440 was published on April 18.Title of the invention: "METHOD AND SYSTEM FOR...