Abstract: Positive electrode material for a lithium battery comprises a lithiated metal layered oxide comprising metal elements arranged in layers of metal cations and lithium arranged in interlayers of lithium cations and, in part, in the layers of metal cations, the oxide has a stack arrangement 02 and corresponds to the formula (I): Li(a+b)NicMndCoeMfOg (I) wherein: *a represents the proportion of lithium in the interlayers, 0<a<1; *b represents the proportion of lithium in the layers of metal cations, 0<b<?; *c, d, e and f are between 0 and 1 and b+c+d+e+f=I; *1.9<g<2.1; *when f?0, M is one or more of Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; wherein the oxide is coated with an oxide of the formula (II): MnhM?iO2 (M) wherein: *0<h?1.5, preferably h=1; *M? is one or more of Ni, Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; *0?i?1.5.

Abstract: A method for preparing a positive electrode active material for a lithium battery consisting of a lithiated oxide comprising titanium and optionally one or more other metal elements comprising the following successive steps: a) a step of forming a precipitate comprising titanium and the optional other metal element(s) by contacting a titanium coordination complex and, if necessary, at least one salt of the other metal element(s) with an aqueous medium; b) a step of recovering the precipitate thus formed; c) a step of calcining the precipitate in the presence of a lithium source.

Abstract: An electrochemical cell for an accumulator operating according to the principle of forming an alloy with the active material of the negative electrode during the charge process comprising: a negative electrode comprising, as active material, a material alloyable with an element M, M being a metal element; a positive electrode comprising, as active material, a conversion material; an electrolyte comprising at least one salt of M disposed between the negative electrode and the positive electrode.

Abstract: An electrode material of formula Li2+xNiuTivNbwO4 where: 0<x<0.3, u>0 and w>0, x+u+v+w=2, x+2u+4v+5w=6, the electrode material having a crystal structure of disordered NaCl type. A cathode having this material as an electronically active material and also the lithium-ion battery containing this cathode are also contemplated.

Abstract: Positive electrode material for a lithium battery comprises a lithiated metal layered oxide comprising metal elements arranged in layers of metal cations and lithium arranged in interlayers of lithium cations and, in part, in the layers of metal cations, the oxide has a stack arrangement 02 and corresponds to the formula (I): Li(a+b)NicMndCoeMfOg (I) wherein: *a represents the proportion of lithium in the interlayers, 0<a<1; *b represents the proportion of lithium in the layers of metal cations, 0<b<?; *c, d, e and f are between 0 and 1 and b+c+d+e+f=I; *1.9<g<2.1; *when f?0, M is one or more of Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; wherein the oxide is coated with an oxide of the formula (II): MnhM?iO2 (M) wherein: *0<h?1.5, preferably h=1; *M? is one or more of Ni, Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; *0?i?1.5.

Abstract: The present invention concerns an electrode material of formula Li2+xNiuTivNbwO4 wherein: 0<x<0.3, u>0 and w>0, x+u+v+w=2, x+2u+4v+5w=6, the electrode material having a crystal structure of disordered NaCl type. The present invention also concerns the cathode having this material as an electronically active material, and also the lithium-ion battery containing this cathode.

Abstract: The present invention relates to an electrode material of formula LiMnxCo1-xBO3, where 0<×<1, and to a method of preparing the same comprising independently preparing a manganese borate and a cobalt borate and then simultaneously thermally treating them under an inert atmosphere, in the presence of a precursor of lithium and of boric acid.

Abstract: The present invention relates to an electrode material of formula LiFe1-xCoxBO3, where 0<x<1, and to a method of preparing the same comprising independently preparing an iron borate and a cobalt borate and then simultaneously thermally treating them under an inert atmosphere, in the presence of a precursor of lithium and of boric acid.

Abstract: The present invention relates to an electrode material of formula LiMnxCo1-xBO3, where 0<x<1, and to a method of preparing the same comprising independently preparing a manganese borate and a cobalt borate and then simultaneously thermally treating them under an inert atmosphere, in the presence of a precursor of lithium and of boric acid.

Abstract: A method for preparing a mixture of a powder of an electrode active compound and of a powder of an electron conducting compound is disclosed. According to some aspects, the method includes preparing a liquid medium containing the powder of the electrode active compound and the powder of the electron conducting compound, subjecting the liquid medium containing the powder of the electrode active compound and the powder of the electron conducting compound to the action of high energy ultrasonic waves, removing the liquid medium, and collecting the mixture of the powder of the electrode active compound and of the powder of the electron conducting compound. According to some aspects, an electrode including the mixture as an electrochemically active material, a cell including the electrode, and an accumulator or battery including one or more of these cells are disclosed.

Abstract: A two-phase positive electrode material for a lithium battery in which particles of lithium-enriched layered oxide of formula Li1+x(MnaNibMc)1?xO2 are at least partially coated on the surface with a metal oxide of formula LiyVOz. Such a material is advantageously produced by mixing the lithium-enriched lamellar oxide with at least one precursor of the metal oxide in aqueous solution, followed by thermal treatment at a temperature no lower than 280° C.

Abstract: A method for producing a composite sulphur/carbon conductive material obtained solely from an initial sulphur and an initial carbon which includes the following successive steps between 50% and 90% by weight of initial sulphur and between 50% and 10% by weight of initial carbon having a specific surface smaller than or equal to 200 m2/g are placed in a reactor at atmospheric pressure, the sum of the proportions respectively of the initial sulphur and carbon attaining 100%, the reactor is hermetically sealed at atmospheric pressure, and the composite sulphur/carbon conductive material is formed, in powder form, by heat treatment by heating said reactor to a heating temperature comprised between 115° C. and 400° C., without external regulation of the pressure inside the reactor, and keeping said reactor at said heating temperature during a predetermined time.

Abstract: The invention relates to a positive electrode/electrolyte pair for lithium batteries operating at a voltage above 4.2 V versus Li+/Li. The electrolyte of the lithium battery used in the invention includes at least a first additive chosen from optionally substituted, cyclic or acyclic, carboxylic or dicarboxylic anhydrides and carboxylic or dicarboxylic acids, and mixtures thereof, and optionally a second additive which is a lithium salt, the total content of additive(s) being greater than or equal to 0.01% by weight and less than or equal to 30% by weight, relative to the total weight of electrolyte, and the positive electrode is made of a material having a spinel structure. The lithium batteries of the invention are applicable in particular in the field of portable equipment, such as telephones, computers, camcorders, cameras and tooling.

Abstract: A method of synthesis of a metal fluorophosphate having the following general formula (1): XaMb(PO4)cFd (1), in which: X is an alkaline metal selected among sodium (Na) and lithium (Li) or a mixture of said metals; M is a transition metal selected among the following elements: Co, Ni, Fe, Mn, V, Cu, Ti, Al, Cr, Mo, Nb or a combination of at least two of said metals, 0?a?5; 0.5?b?3; 0.5?c?3; and d is an integer equal to 1, 2 or 3. The method contains an electric-field-activated sintering process for a mixture (1) formed by at least one first phosphate-containing solid precursor and at least one second fluorine-containing solid precursor.

Abstract: The invention relates to a two-phase positive electrode material for a lithium battery, which includes particles of a lithium-enriched lamellar oxide, the surface of which is at least partially covered by a metal oxide having formula LiyVOz, wherein 0<y<3 and 2.5<z<4. The lithium-enriched lamellar oxide has the following specific formula Li1+x(MnaNibMc)1?x02, wherein: 0.1<x<0.25; a+b+c =1, a, b and c having non-zero values; and M is a metal selected from the group comprising Mg, Zn, Al, Na, Ca, K. Such a material is advantageously produced by mixing the lithium-enriched lamellar oxide with at least one precursor of the metal oxide placed in aqueous solution, followed by a step comprising thermal treatment at a temperature no lower than 280° C.

Abstract: Process for the preparation of an insertion compound of an alkali metal in which the following successive stages are carried out: a) an organic complex of a transition metal or of a mixture of transition metals M in an oxidation state of greater than 2 is brought into contact with an alkali metal A in the ionic form and with an entity of formula Hb(XO4), where X is chosen from Si, S, Al, P, Ge, As or Mo and b has a value from 0 to 5, in a liquid medium in a closed chamber; the chamber is brought to a temperature T which makes possible the decomposition of the organic complex in the said liquid medium; the temperature and the pressure in the chamber are brought back to ambient temperature and atmospheric pressure and the insertion compound for an alkali metal of formula AMXO4, in which M is in the +2 oxidation state, is recovered.

Abstract: The LiMPO4 compound is synthesized by reacting a compound of general formula XMPO4, nH2O where X represents a radical selected from —NH4 and —H and M is a transition metal selected from Co, Ni and Mn, with a lithium source such as lithium nitrate, at a temperature lower than or equal to 350° C. The XMPO4, nH2O compound further exhibits a particular morphology in the form of platelets that is preserved during the reaction between the two precursors. The LiMPO4 compound thus synthesized is advantageously used as active material of an electrode for a lithium storage battery.

Abstract: A material or compound is provided having a spinel structure and corresponding to the formula LiyNi0.5Mn1.5?xIVMnxIIIAzO4?d, where: 0.02?x?0.35; d>0; A is selected from the group comprising Na, K, Mg, Nb, Al, Ni, Co, Zr, Cr, Fe, Cu, Ti, Zn, Si and Mo; 0.8?y?1.2; 0?z?0.1; and has a mesh parameter of between 8.174 and 8.179 ?.

Abstract: A lamellar-type oxide, in particular used as active material of a positive electrode for a lithium battery and to a method for synthesizing such an oxide. The oxides are used as active materials for the positive electrode of a lithium battery. With such oxides, the specific capacity of a lithium battery is improved and stabilized on cycling.

Abstract: A method of synthesis of a metal fluorophosphate having the following general formula (1): XaMb(PO4)cFd (1), in which: X is an alkaline metal selected among sodium (Na) and lithium (Li) or a mixture of said metals; M is a transition metal selected among the following elements: Co, Ni, Fe, Mn, V, Cu, Ti, Al, Cr, Mo, Nb or a combination of at least two of said metals, 0?a?5; 0.5?b?3; 0.5?c?3; and d is an integer equal to 1, 2 or 3. The method contains an electric-field-activated sintering process for a mixture (1) formed by at least one first phosphate-containing solid precursor and at least one second fluorine-containing solid precursor.