Centre National De La Recherche Scientifique

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Toyota Motor Engineering & Manufacturing North America, Inc.

Toyota Motor Corporation

University De Montreal

Michel B Armand

Wen Li

Gerald Perron

Keiichi Kohama

Abdelkader Hammou

Lucienne Ravaine

Yves Charbouillot

A lithium-ion battery comprises a negative electrode, a positive electrode, and an electrolyte including a molten salt. The positive electrode comprises an electroactive compound including phosphorus, oxygen, lithium, and at least one other metal or semi-metal. The combination of such electrode compositions and a molten salt electrolyte provides a battery with very high thermal stability. Other ions, such as alkal metal ions, may be used in place of lithium ions for applications in other battery technologies.

Battery with molten salt electrolyte and phosphorus-containing cathode

Compositions based on derivatives of silica modified by organic groups,

New mixed conductors resulting from the insertion of an alkali element in the lattice of an intercalation compound of graphite and of a product M'.sub.y X.sub.z : M' is a transition metal such as Ti, V, Cr, Mn, Fe, Mo; X is a nonmetallic electronegative atom such as O, S, F, Cl or Br; y and z have the values of the indices in said product M'.sub.y X.sub.z. These mixed compounds are useful for the manufacture of positive electrodes of electrochemical generators.

Mixed conductors of graphite, processes for their preparation and their

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Saint Martin D'uriage, France

Michel B Armand