Patents by Inventor Stefano Passerini
Stefano Passerini 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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Publication number: 20150099165Abstract: The invention relates to an electrolyte for a lithium-based energy storage device comprising at least one lithium salt, a solvent and at least one compound of general formula (1), and to their use in lithium-based energy storage devices.Type: ApplicationFiled: October 31, 2012Publication date: April 9, 2015Inventors: Christian Dippel, Alexandra Lex-Balducci, Martin Winter, Miriam Kunze, René Schmitz, Romek Ansgar Müller, Stefano Passerini, Nataliya Kalinovich, Gerd-Volker Röschenthaler, Tobias Böttcher
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Publication number: 20150044573Abstract: The invention relates to lithium 1-trifluoromethoxy-1,2,2,2-tetra-fluoroethanesulphonate, the use of lithium 1-trifluoromethoxy-1,2,2,2-tetra-fluoroethanesulphonate as electrolyte salt in lithium-based energy stores and also ionic liquids comprising 1-trifluoro-methoxy-1,2,2,2-tetrafluoro-ethanesulphonate as anion.Type: ApplicationFiled: February 27, 2013Publication date: February 12, 2015Inventors: Gerd-Volker Röschenthaler, Martin Winter, Stefano Passerini, Katja Vlasov, Nataliya Kalinovich, Christian Schreiner Schreiner, Raphael Wilhelm Schmitz, Ansgar Romek Müller, Rene Schmitz, Tanja Schedlbauer, Alexandra Lex-Balducci, Miriam Kunze
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Publication number: 20150037674Abstract: The invention relates to carbon-coated zinc ferrite particles, to a method for producing carbon-coated zinc ferrite particles, and to the use thereof as the electrode material for lithium-ion batteries.Type: ApplicationFiled: February 22, 2013Publication date: February 5, 2015Inventors: Dominic Bresser, Elie Paillard, Martin Winter, Stefano Passerini
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Publication number: 20150030939Abstract: The invention relates to the use of lithium-2-pentafluoroethoxy-1,1,2,2-tetrafluoro-ethanesulfonate as a conductive salt in lithium-based energy stores and to electrolytes containing lithium-2-pentafluoroethoxy-1,1,2,2-tetrafluoro-ethanesulfonate.Type: ApplicationFiled: February 27, 2013Publication date: January 29, 2015Inventors: Marius Amereller, René Schmitz, Raphael Wilhelm Schmitz, Ansgar Romek Müller, Martin Winter, Christian Schreiner, Miriam Kunze, Stefano Passerini
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Publication number: 20140255787Abstract: A method of producing an active material for batteries comprising providing electrochemically active particles, optionally comminuting the electrochemically active particles, adding an organic carbon compound, optionally in a suitable organic solvent, and mixing, heating the mixture under protective gas to a temperature above the decomposition limit of the organic compound and below the decomposition temperature of the electrochemically active particles, active materials thus obtained and also corresponding applications and uses.Type: ApplicationFiled: October 10, 2012Publication date: September 11, 2014Applicant: ROCKWOOD LITHIUM GMBHInventors: Stefano Passerini, Sangsik Jeong, Dominic Bresser, Martin Winter
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Publication number: 20140154590Abstract: The invention relates to an electrolyte, comprising at least one lithium salt, a solvent, and at least one compound according to general formula (1). The invention further relates to lithium-based energy stores comprising such an electrolyte.Type: ApplicationFiled: August 2, 2012Publication date: June 5, 2014Applicant: WESTFALISCHE WILHELMS UNIVERSITAT MUNSTERInventors: Elisabeth Kramer, Rene Schmitz, Stefano Passerini, Martin Winter
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Publication number: 20130337334Abstract: The invention accordingly provides a silicon-carbon composite which has at least a proportion of hard carbon and a proportion of silicon powder and is obtained by, under a noble gas atmosphere, a) treating the hard carbon component at least once with high energy in a mechanofusion mixer and b) subsequently adding the silicon powder component thereto and mixing the components, or adding the silicon powder component during step a) and continuing the mechanofusion treatment, and is characterized in that the composite has an average particle size of less than or equal to 12 ?m, a proportion of hard carbon of from 5 to 50% by weight and a proportion of silicon powder of from 5 to 50% by weight.Type: ApplicationFiled: January 27, 2012Publication date: December 19, 2013Applicant: Evonik Litarion GmbHInventors: Chuanqi Tao, Martin Miessen, Peter Pilgram, Stefano Passerini, Martin Winter
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Publication number: 20130327249Abstract: Cathode or anode, wherein the cathode binder or the anode binder comprises or consists of cellulose and/or cellulose derivatives which are soluble only in ionic liquids, a process for the production thereof and the use of cellulose and/or cellulose derivatives which are soluble only in ionic liquids as binder for producing cathodes and anodes, in particular battery electrodes.Type: ApplicationFiled: December 20, 2011Publication date: December 12, 2013Applicants: ROCKWOOD LITHIUM GMBH, EVONIK LITARION GMBH, VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Martin Winter, Sangsik Jeong, Stefano Passerini
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Publication number: 20050287441Abstract: This invention is a new solid polymer ionically-conducting electrolyte material or composition (SPE) in which the mobile ions include, but are not limited to the lithium ion. SPEs of this invention are formed from the combination of three component materials comprising: (1) an ionic liquid as defined herein, (2) a lithium salt and (3) a polyalkene oxide or polyether material. The invention is useable with numerous types of electrochemical devices, especially rechargeable batteries.Type: ApplicationFiled: June 23, 2005Publication date: December 29, 2005Inventors: Stefano Passerini, Wesley Henderson, Joon-Ho Shin, Fabrizio Alessandrini
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Patent number: 6310960Abstract: A contactless rechargeable hearing aid system in which a rechargeable hearing aid may be optically or inductively recharged by an optical or an inductive recharger. The optically rechargeable hearing aid may have a dual purpose optical fiber that may act as a light conduit for the recharging light, and that may also act as a draw string for the hearing aid. The rechargeable hearing aid may use a high energy nickel metal-hydride rechargeable battery or a high energy, high voltage lithium based rechargeable battery, in conjunction with a DC to DC voltage regulating circuit for converting the rechargeable battery's declining DC output voltage to the fixed DC input voltage needed by the hearing aid's audio related circuitry. The DC to DC voltage regulating circuit may also help to present a supply impedance that matches the input impedance of the audio related circuitry in the hearing aid.Type: GrantFiled: October 7, 1999Date of Patent: October 30, 2001Assignee: Research International, Inc.Inventors: Elric W. Saaski, Boone B. Owens, Michael Bizak, Stefano Passerini
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Patent number: 6265100Abstract: A contactless rechargeable hearing aid system in which a rechargeable hearing aid may be optically or inductively recharged by an optical or an inductive recharger. The optically rechargeable hearing aid may have a dual purpose optical fiber that may act as a light conduit for the recharging light, and that may also act as a draw string for the hearing aid. The rechargeable hearing aid may use a high energy nickel metal-hydride rechargeable battery or a high energy, high voltage lithium based rechargeable battery, in conjunction with a DC to DC voltage regulating circuit for converting the rechargeable battery's declining DC output voltage to the fixed DC input voltage needed by the hearing aid's audio related circuitry. The DC to DC voltage regulating circuit may also help to present a supply impedance that matches the input impedance of the audio related circuitry in the hearing aid.Type: GrantFiled: February 23, 1998Date of Patent: July 24, 2001Assignee: Research International, Inc.Inventors: Elric W. Saaski, Boone B. Owens, Stefano Passerini
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Patent number: 6013391Abstract: Nominal composition V.sub.2 O.sub.4.5 (OH) materials suitable for intercalations of greater than 2.4 Li per V.sub.2 O.sub.5 to yield theoretical energy density of greater than 970 Wh/Kg of cathode active material, the intercalation being completely reversible and synthesis of the materials from sol and gels, and devices incorporating these materials.Type: GrantFiled: June 12, 1997Date of Patent: January 11, 2000Assignee: Regents of The University of MinnesotaInventors: Dinh Ba Le, William H. Smyrl, Boone B. Owens, Stefano Passerini
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Patent number: 5674642Abstract: Nominal composition V.sub.2 O.sub.4.5 (OH) materials suitable for intercalations of greater than 2.4 Li per V.sub.2 O.sub.5 to yield theoretical energy density of greater than 970 Wh/Kg of cathode active material, the intercalation being completely reversible and synthesis of the materials from sol and gels, and devices incorporating these materials.Type: GrantFiled: June 2, 1995Date of Patent: October 7, 1997Assignee: Regents of the University of MinnesotaInventors: Dinh Ba Le, William H. Smyrl, Boone B. Owens, Stefano Passerini
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Patent number: 5394264Abstract: An electrochromic window comprises a tungsten oxide electrode on a transparent conductive glass sheet and a nickel oxide counterelectrode. The counterelectrode is activated by electrochemical intercalation of lithium on a transparent conductive glass sheet. The window also comprises a solid polymeric electrolyte interposed between the electrode and the counterelectrode. The electrolyte is formed by a solid solution of an ionic lithium compound in a solid crosslinked polyepoxide. The polyepoxide is obtained by copolymerization of a monoepoxide with a diepoxide.Type: GrantFiled: November 8, 1993Date of Patent: February 28, 1995Assignee: Eniricerche S.p.A.Inventors: Luca Marchese, Stefano Passerini, Maria Andrei, Bruno Scrosati, Arnaldo Roggero
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Patent number: 5307201Abstract: An electrode of nickel oxide intercalated with lithium ions, is obtained by:thermally evaporating, under vacuum, nickel oxide (Ni.sub.2 O.sub.3) and depositing on a conductive glass substrate a film of nickel oxide in which the atomic ratio of nickel to oxygen is comprised within the range of from 0.7:1 to 0.9:1, up to a thickness of the order of 100 nm; andactivating the thin film of nickel oxide by electrochemical intercalation of an amount of lithium ions, which corresponds to a charge level of from 100 to 1,000 C/m.sup.2. An electrochromic window is disclosed, which comprises:(a) an electrode of tungsten oxide (WO.sub.3) on a transparent, conductive glass sheet; and(b) an electrode of nickel oxide activated by electrochemical intercalation of lithium metal, on a transparent, conductive glass sheet;(c) an electrolyte interposed between the (a) electrode and the (b) electrode;wherein the nickel oxide electrode was obtained as said hereinabove.Type: GrantFiled: May 5, 1992Date of Patent: April 26, 1994Assignee: Eniricerche S.p.A.Inventors: Stefano Passerini, Lucio De Angelis
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Patent number: 5162174Abstract: A solid, polymeric electrolyte is constituted by a solid solution of an ionic compound in a polyepoxide, wherein said polyepoxide is the product of copolymerization of a monoepoxide of formula: ##STR1## wherein: R stands for methyl or ethyl radical; andn is an integer comprised within the range of from 2 to 10;with a diepoxide of formula: ##STR2## wherein: m is an integer comprised within the range of from 2 to 10;with a molar ratio of monoepoxide to diepoxide comprised within the range of from 99.9/0.1 to 90/10;with said polyepoxide furthermore having a weight average molecular weight equal to, or higher than, 1,000, and a glass transition temperature (Tg) of from -80.degree. to -60.degree. C.The solid, polymeric electrolyte can be converted into an electrochemical membrane useful in the manufacture of high-energy-density electrochemical generators, optical displays, electrochromic systems and sensors.Type: GrantFiled: October 4, 1990Date of Patent: November 10, 1992Assignee: Eniricerche S.P.A.Inventors: Maria Andrei, Luca Marchese, Stefano Passerini, Arnaldo Roggero, Bruno Scrosati
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Patent number: 5064548Abstract: A solid polymeric electrolyte is constituted by a solid solution of an ionic compound in an organic matrix of polyether nature, constituted by a mixture consisting of:a high-molecular-weight poly-(ethylene oxide); andthe product of polymerization of a vinylether having the formula:R--(O--CH.sub.2 --CH.sub.2).sub.n --O--CH.dbd.CH.sub.2wherein:R means the methyl or ethyl radical; andn is an integer within the range of from 2 to 6,with said polyvinylether having a number average molecular weight within the range of from about 1,000 to about 10,000 and the weight ratio of said poly(ethylene oxide) to said polyvinylether being within the range of from 10:90 to 90:10.Type: GrantFiled: August 1, 1990Date of Patent: November 12, 1991Assignee: 501 Eniricerche S.p.A.Inventors: Arnaldo Roggero, Maria Andrei, Stefano Passerini, Bruno Scrosati
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Patent number: 4886716Abstract: A solid polymeric electrolyte is constituted by a solid solution of an ionic compound in a cross-linked polyether, wherein this latter is the copolymerization product of a vinyl-ether of formula:R--(O--CH.sub.2 --CH.sub.2).sub.n --O--CH.dbd.CH.sub.2 (I)wherein:R is the methyl or ehtyl radical; andn is an integer comprised within the range of from 1 to 16; with a di-vinyl-ether of formula:CH.sub.2 .dbd.CH--(O--CH.sub.2 --CH.sub.2).sub.m --O--CH.dbd.CH.sub.2(II)wherein:m is an integer comprised within the range of from 1 to 16; with a molar ratio of the di-vinyl-ether (II) to the vinyl-ether (I) comprised within the range of from 1/100 to 10/100; with said polyether having a weight average molecular weight of about 10,000, and a glass transition temperature (T.sub.g) comprised within the range of from --60.degree. C. to --80.degree. C.Such a solid polymeric electrolyte is used in the manufacturing of high-energy-density electrochemical generators.Type: GrantFiled: October 6, 1988Date of Patent: December 12, 1989Assignee: Eniricerche S.p.A.Inventors: Arnaldo Roggero, Bruno Scrosati, Maria Andrei, Stefano Passerini, Ugo Pedretti