Abstract: The invention concerns a multi-battery assembly, and a container comprising such an assembly, for use in particular in the field of high energy-density assemblies comprising a plurality of Ni—Cd, Ni-MH, lead-acid or Li-ion stationary batteries stored in a container or a library-like room. The multi-battery assembly comprises at least three rows (1 to 4) of batteries (12 to 23) connected in series and/or parallel, including two end rows (1, 4) and at least two intermediate rows (2, 3), each row being connected in series and/or parallel to at least one adjacent row, extending in a first direction (d1), and comprising at least one level (36 to 38) of a plurality of batteries connected in series and/or parallel, each of the levels extending in the first direction (d1).

Abstract: The invention concerns a multi-battery assembly, and a container comprising such an assembly, for use in particular in the field of high energy-density assemblies comprising a plurality of Ni—Cd, Ni-MH, lead-acid or Li-ion stationary batteries stored in a container or a library-like room. The multi-battery assembly comprises at least three rows (1 to 4) of batteries (12 to 23) connected in series and/or parallel, including two end rows (1, 4) and at least two intermediate rows (2, 3), each row being connected in series and/or parallel to at least one adjacent row, extending in a first direction (d1), and comprising at least one level (36 to 38) of a plurality of batteries connected in series and/or parallel, each of the levels extending in the first direction (d1).

Abstract: A lithium-ion battery containing: a positive electrode, a negative electrode, an electrolyte comprising: an organic solvent chosen from the group comprising carbonates, linear esters of a saturated acid, or a mixture thereof, an additive capable of forming a passivation film on the surface of the negative electrode, at least one lithium salt, at least one ionic liquid for which the percentage by weight in the electrolyte is greater than or equal to 20% and less than 50%; a separator for which the apparent contact angle between the surface thereof and the electrolyte is less than 20°.

Abstract: A composition including (a) a lithiated oxide of transition metals containing at least nickel, cobalt and aluminum and (b) a lithiated phosphate of at least one transition metal, the surface of which is at least partially covered by a layer of carbon. In the composition, the proportion by mass of the lithiated oxide of transition metals containing at least nickel, cobalt and aluminum is less than or equal to 10% of the weight of the composition, and the proportion by mass of the lithiated phosphate of at least one transition metal is greater than or equal to 90% of the weight of the composition. A lithium-ion or lithium-polymer type accumulator including at least one positive electrode containing this composition.

Abstract: An electrode material comprising a LixFeyMzPw04 compound for an electrode for a Li rechargeable battery, wherein 0.90<=x<=1.03, 0.85<=y<=1.0, 0.01<=z<=0.15, 0.90<=w<=1.0, 1.9<=x+y+z<=2.1; wherein M comprises at least one element selected from the group consisting of Mn, Co, Mg, Cr, Zn, Al, Ti, Zr, Nb, Na, and Ni; and wherein the compound comprises a charge transfer resistance increase of less than 20% between room temperature and 0° C.

Abstract: A compound of formula Li1+x(NiaMnbCocAly)1?xO2 wherein: a, b and c are non-zero; a+b+c+y=1; 1.05?(1+x)/(1?x)?1.25; 0.015?y(1?x); and the atomic amount of manganese representing from 95% to 100% of the atomic amount of nickel.

Abstract: A composition comprising: a) a lithiated oxide of transition metals containing at least nickel, cobalt and aluminium; b) a lithiated phosphate of at least one transition metal, the surface of which is at least partially covered by a layer of carbon, the proportion by mass of the lithiated oxide of transition metals containing at least nickel, cobalt and aluminium, being less than or equal to 10 % of the weight of the composition. the proportion by mass of the lithiated phosphate of at least one transition metal being greater than or equal to 90 % of the weight of the composition. A lithium-ion or lithium-polymer type accumulator comprising at least one positive electrode containing this composition.

Abstract: A lithium-ion battery containing: a positive electrode, a negative electrode, an electrolyte comprising: an organic solvent chosen from the group comprising carbonates, linear esters of a saturated acid, or a mixture thereof, an additive capable of forming a passivation film on the surface of the negative electrode, at least one lithium salt, at least one ionic liquid for which the percentage by weight in the electrolyte is greater than or equal to 20% and less than 50%; a separator for which the apparent contact angle between the surface thereof and the electrolyte is less than 20°.

Abstract: A subject of the invention is a mixture of solvents for the electrolyte of a lithium battery, which mixture of solvents comprises with respect to the volume of said mixture, 50 to 95% by volume of a linear ester of a C2 to C8 saturated acid, and 5 to 50% by volume of a C3 to C6 saturated cyclic carbonate and a C3 to C6 saturated linear carbonate, only one of the two carbonates being substituted by at least one halogen atom. The invention is also aimed at a lithium battery comprising a liquid electrolyte having this composition. The battery according to the invention is able to operate at temperatures which can range up to approximately ?60° C. A subject of the invention is also the use of a battery according to the invention at temperatures which can range up to ?60° C.

Abstract: A compound of formula Li1+x(NiaMnbCocAly)1?xO2 wherein: a, b and c are non-zero; a+b+c+y=1; 1.05?(1+x)/(1?x)?1.25; 0.015?y(1?x); the atomic amount of manganese representing from 95% to 100% of the atomic amount of nickel.

Abstract: A composition useful as an electrolyte in a lithium-ion battery comprises at least one C3-C6 carbonate or a lactone, at least one unsaturated cyclic carbonate in a v/v proportion less than 5% of the volume of the other constituents of the composition, lithium hexafluorophosphate (LiPF6) and at least 0.2 mol/l lithium bis(oxalatoborate). A battery using this electrolyte is suitable for operation at temperatures down to about ?50° C.

Abstract: An electrochemically active material resulting from substituting a portion of the nickel in a single-phase composite oxide of nickel and lithium of the LiNiO2 type, characterized in that the active material satisfies the formula: Li(M1(1-a-b-c)LiaM2bM3c)O2 in which: 0.02<a?0.25; 0?b<0.30; 0?c<0.30; (a+b+c)<0.50; M3 is at least one element selected from Al, B, and Ga; M2 is at least one element selected from Mg and Zn; and M1=Ni(1-x-y-z)CoxMnyM4z in which M4 is at least one element selected from Fe, Cu, Ti, Zr, V, Ga, and Si; and 0?x<0.70; 0.10?y<0.55; 0?z<0.30; and 0.20<(1-x-y-z); b+c+z>0; and in that said active material, regardless of its state of charge, satisfies the relationship: 0.40<R<0.90, where: R=(1-a-b-c)*[3-[(nU/nMA+dox)/(4-2b-3c)]*(2-b-2c)] in which: nU is the lithium content expressed in moles; nMA is the sum of the contents of Ni, Mn, Co, and M4 expressed in moles; and dox is the overall degree of oxidation of M1.

Abstract: A subject of the invention is a mixture of solvents for the electrolyte of a lithium battery, which mixture of solvents comprises with respect to the volume of said mixture, 50 to 95% by volume of a linear ester of a C2 to C8 saturated acid, and 5 to 50% by volume of a C3 to C6 saturated cyclic carbonate and a C3 to C6 saturated linear carbonate, only one of the two carbonates being substituted by at least one halogen atom. The invention is also aimed at a lithium battery comprising a liquid electrolyte having this composition. The battery according to the invention is able to operate at temperatures which can range up to approximately ?60° C. A subject of the invention is also the use of a battery according to the invention at temperatures which can range up to ?60° C.

Abstract: The use of a rechargeable lithium storage cell at a temperature lying in the range 80° C. to 180° C., said cell comprising a cathode, an anode comprising either Li4Ti5O12 or a carbon-containing material capable of inserting lithium, a separator, a non-aqueous solvent, and a lithium slat, wherein: the active material of said cathode is a lithiated metal oxide having the following formula: LiNi1-x-yCoxAl/MnyO2 in which: Al/Mn means Al and/or Mn; 0?x?0.5; 0?y?0.5; the sum x+y being less than 0.66; and wherein the lithium salt is selected from the group consisting of: LiPF6, LiBF4, LiBOB, LiBETI, and mixtures thereof.

Abstract: The present invention provides a lithium rechargeable electrochemical cell containing a liquid electrolyte and an electrochemically active material for the positive electrode, wherein said active material comprises a mixture of: I) a composite oxide of lithium and at least one transition metal selected from Ni and Co, which is also substituted by an element selected from Mg, Al, B, Ti, Si, Zr, Fe, Zn, and Cu; and II) a composite oxide of phosphorus, lithium, and at least one transition metal of general formula LitM2zPO4 where 0<t<3 and z=1 or 2, and such that the content of the composite oxide of phosphorus, lithium, and at least one transition metal lies in the range 1% to 50% of the weight of said mixture.

Abstract: The present invention provides an electrochemically active material resulting from substituting a portion of the nickel in a single-phase composite oxide of nickel and lithium of the LiNiO2 type, characterized in that the active material satisfies the formula: Li(M1(1-a-b-c)LiaM2bM3c)O2 in which: 0.02<a?0.25; 0?b<0.30; 0?c<0.30; (a+b+c)<0.50; M3 is at least one element selected from Al, B, and Ga; M2 is at least one element selected from Mg and Zn; and M1=Ni(1-x-y-a)CoxMnyM4z in which M4 is at least one element selected from Fe, Cu, Ti, Zr, V, Ga, and Si; and 0?x<0.70 0.10?y<0.55 0?z<0.30 0.20<(1-x-y-z) b+c+z>0; and in that said active material, regardless of its state of charge, satisfies the following relationship: 0.40<R<0.90 where: R=(1-a-b-c)*[3-[(nU/nMA+dox)/(4-2b-3c)]*(2-b-2c) in which: nU is the lithium content expressed in moles; nMA is the sum of the contents of Ni, Mn, Co, and M4 expressed in moles; and dox is the overall degree of oxidation of M1.

Abstract: The present invention provides an electrochemically active material resulting from substituting a portion of the nickel in a combined nickel and lithium oxide of the LiNiO2 type that crystallizes into a rhombohedral structure and that satisfies the formula: Li (Ni(1-x-y-z-t)CoxMnyLizMt)O2-eFe where: 0?x<0.70 0.05<y?0.50 0?z?0.20 0?t?0.30 0.01<e?0.50 0.20?(1-x-y-z-t) and in which M is at least one element from Mg, Al, B, Ti, Si, Zr, Fe, Zn, and Cu.

Abstract: The present invention provides a lithium insertion compound suitable for operating at a voltage greater than 4.

Abstract: A rechargeable lithium storage cell includes a positive electrode, whose electrochemically active material includes one or more oxides of a transition metal, and a negative electrode, consisting of a conductive support and an active layer containing a binder and an electrochemically active material. The binder is a polymer containing no fluorine. The electrochemically active material is a mixed oxide of lithium and titanium with the general formula LixTiyO4 in which 0.8≦x≦1.4 and 1.6≦y≦2.2. The non-fluorinated polymer is preferably soluble in water or capable of forming a stable emulsion in suspension in water. The binder preferably contains an elastomer, especially an acrylonitrile/butadiene copolymer and/or a cellulose compound such as carboxymethylcellulose.

Abstract: The present invention provides a rechargeable lithium electrochemical cell comprising an electrolyte containing a lithium salt dissolved in a non-aqueous solvent, at least one positive electrode, and at least one negative electrode of the paste type containing an electrochemically active material which is a carbon compound suitable for inserting lithium ions and a binder, the cell being characterized in that said solvent contains at least one saturated cyclic carbonate and at least one linear ester of a saturated aliphatic monocarboxylic acid, and in that said binder is a polymer having no fluorine.