Lithium Battery with Inorganic Electrolyte.
Final rept. 1 Dec 71-31 May 73,
GTE LABS INC WALTHAM MASS
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A series of lithium anode electrochemical cells using inorganic oxyhalides as solvents for the electrolytic solutions have been operated at room temperature. Lithium metal can be electrodeposited from these solutions accompanied by the simultaneous electrogeneration of chlorine at the positive electrode. The resulting lithiumchlorine electrochemical cell has an open circuit voltage in excess of 4 volts. A group of halogenplatinum, halogengraphite, nonmetallic and metallic cathode systems are described. The solvents themselves, while stable to lithium metal and strong oxidants such as chlorine, can be electrochemically reduced at various catalytic surfaces such as carbon and act as cathode depolarizers. This electrochemical reduction of the solvent results in cells with extremely stable voltages and high-energy densities in excess of 500 Whkg.
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