Patents by Inventor Fernand Brochu
Fernand Brochu 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: 20200373570Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: ApplicationFiled: June 24, 2020Publication date: November 26, 2020Applicant: HYDRO-QUÉBECInventors: Karim ZAGHIB, Michel Gauthier, Fernand Brochu, Abdelbast GUERFI, Monique Masse, Michel ARMAND
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Patent number: 10734647Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: GrantFiled: August 31, 2016Date of Patent: August 4, 2020Assignee: HYDRO-QUEBECInventors: Karim Zaghib, Michel Gauthier, Fernand Brochu, Abdelbast Guerfi, Monique Masse, Michel Armand
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Patent number: 9559356Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: GrantFiled: August 18, 2014Date of Patent: January 31, 2017Assignee: HYDRO-QUEBECInventors: Karim Zaghib, Michel Gauthier, Fernand Brochu, Abdelbast Guerfi, Monique Masse, Michel Armand
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Publication number: 20160372746Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: ApplicationFiled: August 31, 2016Publication date: December 22, 2016Applicant: HYDRO-QUEBECInventors: Karim ZAGHIB, Michel GAUTHIER, Fernand BROCHU, Abdelbast GUERFI, Monique MASSE, Michel ARMAND
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Patent number: 9508983Abstract: A method for modifying graphite particles having a prismatic shape or a cylindrical shape characterized by an edge function fe and a basal function fb, said method providing increase of the edge function and lowering of the basal function, wherein the method includes submitting the graphite particles to at least one physical means selected from attrition, jet mill, ball mill, hammer mill, or atomizer mill, in the presence of at least one chemical compound chosen from the group of compounds of the formula MFz, in which M represents an alkaline or alkaline-earth metal and z represents 1 or 2, NaCl and NH4F or a mixture thereof, said compound or compounds being added in solid form, at the beginning of the step using the physical means.Type: GrantFiled: November 5, 2015Date of Patent: November 29, 2016Assignee: HYDRO-QUEBECInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Patent number: 9444092Abstract: Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: GrantFiled: October 2, 2009Date of Patent: September 13, 2016Assignee: HYDRO-QUEBECInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Patent number: 9412999Abstract: Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: GrantFiled: October 8, 2015Date of Patent: August 9, 2016Assignee: HYDRO-QUEBECInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Publication number: 20160141603Abstract: Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: ApplicationFiled: October 8, 2015Publication date: May 19, 2016Applicant: HYDRO QUEBECInventors: Abdelbast GUERFI, Fernand BROCHU, Kimio KINOSHITA, Karim ZAGHIB
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Patent number: 9312537Abstract: A method for modifying graphite particles having a prismatic shape or a cylindrical shape characterized by an edge function fe and a basal function fb, said method providing increase of the edge function and lowering of the basal function, wherein the method includes submitting the graphite particles to at least one physical means selected from attrition, jet mill, ball mill, hammer mill, or atomizer mill, in the presence of at least one chemical compound chosen from the group of compounds of the formula MFz, in which M represents an alkaline or alkaline-earth metal and z represents 1 or 2, NaCl and NH4F or a mixture thereof, said compound or compounds being added in solid form, at the beginning of the step using the physical means.Type: GrantFiled: September 14, 2012Date of Patent: April 12, 2016Assignee: HYDRO-QUEBECInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Publication number: 20160060119Abstract: A method for modifying graphite particles having a prismatic shape or a cylindrical shape characterized by an edge function fe and a basal function fb, said method providing increase of the edge function and lowering of the basal function, wherein the method includes submitting the graphite particles to at least one physical means selected from attrition, jet mill, ball mill, hammer mill, or atomizer mill, in the presence of at least one chemical compound chosen from the group of compounds of the formula MFz, in which M represents an alkaline or alkaline-earth metal and z represents 1 or 2, NaCl and NH4F or a mixture thereof, said compound or compounds being added in solid form, at the beginning of the step using the physical means.Type: ApplicationFiled: November 5, 2015Publication date: March 3, 2016Applicant: HYDRO-QUEBECInventors: Abdelbast GUERFI, Fernand BROCHU, Kimio KINOSHITA, Karim ZAGHIB
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Patent number: 9184437Abstract: Modified graphite particles are obtained from graphite or based on graphite. The particles have impurities in their internal structure and have on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: GrantFiled: April 5, 2013Date of Patent: November 10, 2015Assignee: HYDRO-QUEBECInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Patent number: 9077031Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, wherein ? is >0 and ?0.5, ? is a number >0 and ?0.33, Z is a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators. The process may involve the steps of a) preparing a dispersion of a mixture of TiOx—LizY-carbon, wherein x is a number between 1 and 2, z is 1 or 2, and Y is a radical chosen among CO3, OH, O and TiO3 or a mixture thereof; and 2) heating of the dispersion, preferably to a temperature of between about 400° C. and about 1000° C.Type: GrantFiled: January 27, 2012Date of Patent: July 7, 2015Assignee: HYDRO-QUEBECInventors: Karim Zaghib, Michel Gauthier, Fernand Brochu, Abdelbast Guerfi, Monique Masse, Michel Armand
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Publication number: 20140356725Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: ApplicationFiled: August 18, 2014Publication date: December 4, 2014Applicant: HYDRO-QUEBECInventors: Karim ZAGHIB, Michel GAUTHIER, Fernand BROCHU, Abdelbast GUERFI, Monique MASSE, Michel ARMAND
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Publication number: 20130323600Abstract: Modified graphite particles are obtained from graphite or based on graphite. The particles have impurities in their internal structure and have on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: ApplicationFiled: April 5, 2013Publication date: December 5, 2013Applicant: HYDRO QUEBECInventors: ABDELBAST GUERFI, FERNAND BROCHU, KIMIO KINOSHITA, KARIM ZAGHIB
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Publication number: 20130011554Abstract: A method for modifying graphite particles having a prismatic shape or a cylindrical shape characterized by an edge function fe and a basal function fb, said method providing increase of the edge function and lowering of the basal function, wherein the method includes submitting the graphite particles to at least one physical means selected from attrition, jet mill, ball mill, hammer mill, or atomizer mill, in the presence of at least one chemical compound chosen from the group of compounds of the formula MFz, in which M represents an alkaline or alkaline-earth metal and z represents 1 or 2, NaCl and NH4F or a mixture thereof, said compound or compounds being added in solid form, at the beginning of the step using the physical means.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Hydro QuebecInventors: ABDELBAST GUERFI, Fernand Brochu, Kimio Kinoshita, Karim Zaghib
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Publication number: 20120135311Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.Type: ApplicationFiled: January 27, 2012Publication date: May 31, 2012Applicant: Hydro-QuebecInventors: Karim ZAGHIB, Michel Gauthier, Fernand Brochu, Abdelbast Guerfi, Monique Massé, Michel Armand
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Patent number: 8114469Abstract: A process for synthesizing particles of an oxide corresponding to a formula selected from: Li4Ti5O12; Li(4-?)Z?Ti5O12; and Li4Z?Ti(5-?)O12, said process including the steps of: a) preparing an intimately dispersed ternary mixture of TiOx—LiZY-carbon, wherein x is a number between 1 and 2, z is 1 or 2, Y is a radical chosen from the group consisting of CO3, OH, O and TiO3 or a mixture thereof, and the carbon is a carbon powder selected from the group consisting of natural or artificial graphite, carbon black, Shawinigan black, Ketjen black and cokes; b) heating the dispersion at a temperature of between 400 and 1,000° C.; and c) if appropriate, adding a source of at least one metal Z to the ternary mixture, wherein the operating conditions are chosen in such a way as to yield a conversion of the initial products respectively into Li4Ti5O12, Li(4-?)Z?Ti5O12, Li4Z?Ti(5-?)O12.Type: GrantFiled: May 2, 2008Date of Patent: February 14, 2012Assignee: Hydro-QuebecInventors: Karim Zaghib, Michel Gauthier, Fernand Brochu, Abdelbast Guerfi, Monique Masse, Michel Armand
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Patent number: 7993621Abstract: The present invention relates to the physical or chemical specific purification of natural mineral graphite. This purification is preferably applied to the surface of natural graphite in order to allow the formation of a passivation film during the first electrical discharge or the insertion of lithium in the graphite when the latter is used in a lithium-ion cell. The grinding to a small size before purification allows the optimization of the distribution of the particles, resulting in a more uniform electrode. This grinding is carried out in the presence of the natural impurities of the graphite that play the role of a micro-abrasive and result in a hardness of the graphite that increases its mechanical properties.Type: GrantFiled: April 23, 2007Date of Patent: August 9, 2011Assignee: Hydro-QuebecInventors: Karim Zaghib, Michel Gauthier, Gabrielle Nadeau, Abdelbast Guerfi, Monique Massé, Fernand Brochu, Michel Armand
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Publication number: 20110108771Abstract: A composition for applying a coating on a support at low temperature from a dispersion of at least a component of the coating to be deposited in the composition. The composition includes at least a strong and heavy solvent with a boiling point higher than 150° C. approximately, and a weak solvent with a boiling point less than 100° C. approximately. The solvents forming the composition must constitute a mixture that evaporates at a temperature less than 100° C. The composition is particularly useful for forming electrodes or electrolyte in lithium-ion batteries. The method and the device used for forming the coating use a dispersion spreader and an infrared lamp.Type: ApplicationFiled: November 12, 2010Publication date: May 12, 2011Applicant: HYDRO-QUEBECInventors: Abdelbast GUERFI, Fernand Brochu, Monique Masse, Karim Zaghib
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Publication number: 20100092808Abstract: Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 ?m. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.Type: ApplicationFiled: October 2, 2009Publication date: April 15, 2010Applicant: Hydro QuebecInventors: Abdelbast Guerfi, Fernand Brochu, Kimio Kinoshita, Karim Zaghib