INTERCALATED LITHIUM PHOSPHATES, CONTAINING LITHIUM, AND ITS USE AS A POSITIVE OR NEGATIVE ELECTRODE MATERIAL IN A SECONDARY LITHIUM BATTERY.

摘要

THE INVENTION PROVIDES AN ELECTROCHEMICAL CELL THAT INCLUDES A FIRST ELECTRODE AND A SECOND ELECTRODE THAT IS A COUNTERELECTRODE REGARDING THE MENTIONED FIRST ELECTRODE. THE FIRST ELECTRODE INCLUDES A PHOSPHORATED COMPOUND OF THE NOMINAL GENERAL FORMULA LI 3 E '' AE "B (PO 4) 3, IN WHICH DESIRABLY AT LEAST E IS A METAL; AND PREFERIBLY LI 3 M''M" (PO 4) 3 , IN WHICH E '' YE "ARE THE SAME OR DIFFERENT BETWEEN YES. IF E '' YE" ARE THE SAME, THEY ARE PREFERIBLY METALS THAT HAVE MORE THAN ONE STATE OF OXIDATION. IF E '' AND E "ARE DIFFERENT BETWEEN YES, THEY ARE PREFERIBLY SELECTED FROM THE METAL GROUP IN THAT AT LEAST E '' AND E" HAVE MORE THAN ONE STATE OF OXIDATION. MORE SPECIFICALLY, A RECHARGEABLE LITHIUM BATTERY THAT INCLUDES AN ELECTRODE IS EXPOSED, PREFERIBLY THE POSITIVE ELECTRODE, FORMED BY A LITHIUM METAL INTERCALATION TYPE M''M "(PO 4) 3, IN WHICH M '', M" THEY ARE METALS SELECTED FROM YOU, FAITH, V, AL, MO AND CR.