Patents by Inventor Frédéric CASTAING
Frédéric CASTAING has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10862108Abstract: A composition of active material for a positive electrode of a lithium-ion electrochemical cell is provided comprising: (a) a lithiated oxide of formula Li1+xMO2 in which: 0?x?0.15, M designates NiaMnbCocM?d where a>0; b>0; c>0; d?0 and a+b+c+d=1; M? being chosen from B, Mg, Al, Si, Ca, Ti, V, Cr, Fe, Cu, Zn, Y, Zr, Nb, Mo or a mixture of these; (b) a lithiated phosphate of formula LiMn1?yM?yPO4 where M? represents at least one element chosen from the group consisting of Fe, Ni, Co, Mg and Zn; and 0<y<0.5; the particle size distribution of the lithiated oxide being characterized by a first volume median diameter of the particles Dv501?500 nm; the particle size distribution of the lithiated phosphate being characterized by a second volume median diameter of the particles Dv502?500 nm; and Dv502/Dv501?1.5.Type: GrantFiled: May 18, 2016Date of Patent: December 8, 2020Assignee: SAFTInventors: Erwan Dumont, Frédéric Castaing, Cécile Tessier
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Publication number: 20200266492Abstract: A lithium-ion electrochemical cell comprising: at least one negative electrode comprising an active material having an operating potential greater than or equal to 1 V with respect to the potential of the electrochemical couple Li+/Li; at least one positive electrode; the negative electrode and/or the positive electrode comprising a binder selected from polytetrafluoroethylene, polyamideimide, polyimide, styrene-butadiene rubber and polyvinyl alcohol or a mixture thereof; a liquid electrolyte comprising a solvent which is an ionic liquid; a separator having a shrinkage of less than or equal to 3% in the direction of its length and in the direction of its width, after exposure to a temperature of 200° C. for a period of at least one hour. This electrochemical cell can be used in charge or discharge at a temperature ranging from room temperature to 150° C. or higher.Type: ApplicationFiled: October 1, 2018Publication date: August 20, 2020Applicant: SAFTInventors: Erwan DUMONT, Frédéric CASTAING, Benjamin LE GUERN, Fabrice RENE, Michel ULLDEMOLINS, Cécile TESSIER, Jean-Paul PERES, Florent FISCHER
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Publication number: 20180145314Abstract: A composition of active material for a positive electrode of a lithium-ion electrochemical cell is provided comprising: (a) a lithiated oxide of formula Li1+xMO2 in which: 0?x?0.15, M designates NiaMnbCocM?d where a>0; b>0; c>0; d?0 and a+b+c+d=1; M? being chosen from B, Mg, Al, Si, Ca, Ti, V, Cr, Fe, Cu, Zn, Y, Zr, Nb, Mo or a mixture of these; (b) a lithiated phosphate of formula LiMn1?yM?yPO4 where M? represents at least one element chosen from the group consisting of Fe, Ni, Co, Mg and Zn; and 0<y<0.5; the particle size distribution of the lithiated oxide being characterized by a first volume median diameter of the particles Dv501?500 nm; the particle size distribution of the lithiated phosphate being characterized by a second volume median diameter of the particles Dv502?500 nm; and Dv502/Dv501?1.5.Type: ApplicationFiled: May 18, 2016Publication date: May 24, 2018Applicant: SAFTInventors: Erwan DUMONT, Frédéric CASTAING, Cécile TESSIER
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Patent number: 8080184Abstract: 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.Type: GrantFiled: October 1, 2009Date of Patent: December 20, 2011Assignees: Saft, Centre National de la Recherche Scientifique, UmicoreInventors: Julien Breger, Frederic Castaing, Philippe Biensan, Jessica Bains, Laurence Croguennec, Claude Delmas, Stephane Levasseur
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Patent number: 7722985Abstract: 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.Type: GrantFiled: December 2, 2005Date of Patent: May 25, 2010Assignee: SAFTInventors: Clemence Siret, Cecile Teissier, Frederic Castaing, Philippe Biensan
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Publication number: 20100108939Abstract: 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.Type: ApplicationFiled: October 1, 2009Publication date: May 6, 2010Applicants: SAFT GROUPE S.A., CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UMICOREInventors: Julien BREGER, Frederic CASTAING, Philippe BIENSAN, Jessica BAINS, Laurence CROGUENNEC, Claude DELMAS, Stephane LEVASSEUR
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Publication number: 20060154116Abstract: 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.Type: ApplicationFiled: December 2, 2005Publication date: July 13, 2006Applicant: SAFTInventors: Clemence Siret, Cecile Teissier, Frederic Castaing, Philippe Biensan
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Publication number: 20020127471Abstract: 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.Type: ApplicationFiled: December 28, 2001Publication date: September 12, 2002Applicant: ALCATELInventors: Clemence Siret, Frederic Castaing, Philippe Biensan