CHARACTERIZATION OF THE LITHIUM ORGANIC ELECTROLYTE INTERFACE CONTAINING INORGANIC AND ORGANIC ADDITIVES BY IN-SITU TECHNIQUES

New inorganic additives, tin(II) iodide and aluminum iodide (A1I(3)), improved charge/discharge cycling efficiency of a lithium (Li) electro de in propylene carbonate electrolyte containing lithium perchlorate a s the electrolytic salt. The combination of different types of additiv e, i.e., the addition of A1I(3) together with 2-methylfuran to the ele ctrolyte, resulted in an excellent cycling efficiency of the Li electr ode. The electrochemical behavior of an Li electrolyte-organic electro lyte interface was investigated by in situ techniques such as a.c. imp edance measurements and scanning vibrating electrode technique. The re lation between the Li rechargeability and the interfacial behavior of the Li electrode in the organic electrolyte in the absence and the pre sence of the additives was discussed.