Patents by Inventor Geoffrey SPIKES
Geoffrey SPIKES 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: 20240030463Abstract: Disclosed herein are electrocatalyst materials for an anode catalyst, wherein the electrocatalyst material comprises a carbon support material, the carbon support material comprising a plurality of individual support particles or aggregates, wherein each individual support particle or aggregate has dispersed thereon separate (i) first particles and (ii) second particles. Also provided are processes for forming such electrocatalyst materials, as well as anode catalysts comprising the electrocatalyst materials.Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Inventors: Alejandro MARTINEZ BONASTRE, Jonathan SHARMAN, Geoffrey SPIKES
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Patent number: 11811073Abstract: The use of an electrocatalyst material in an anode catalyst layer, wherein the electrocatalyst material comprises a support material, the support material comprising a plurality of individual support particles or aggregates wherein each individual support particle or aggregate has dispersed thereon (i) first particles and (ii) second particles, wherein: (i) the first particles comprise Pt optionally alloyed with an alloying metal X1; wherein the optional alloying metal X1 is selected from the group consisting of Rh, Ti, Os, V, Co, Ni, Ga, Hf, Sn, Ir, Pd, Mo, Zn, W, Zr and Re; (ii) the second particles consist essentially of a second metal or a second metal compound wherein the second metal is selected from the group consisting of Ir and Ru and the second metal compound comprises IrX2 wherein X2 is selected from the group consisting of Ta, Nb, Ru, Ni and Co; and wherein if the first particles consist of Pt then the second particles do not comprise IrTa; and wherein if the first particles consist of Pt withoutType: GrantFiled: November 22, 2018Date of Patent: November 7, 2023Assignee: Johnson Matthey Hydrogen Technologies LimitedInventors: Alejandro Martinez Bonastre, Jonathan Sharman, Geoffrey Spikes
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Publication number: 20230223557Abstract: The present invention provides a method of preparing a catalyst material, said catalyst material comprising a support material and an electrocatalyst dispersed on the support material; said method comprising the steps: i) providing a support material; then ii) 10 depositing a silicon oxide precursor on the support material; then iii) carrying out a heat treatment step to convert the silicon oxide precursor to silicon oxide; then iv) depositing said electrocatalyst or a precursor of said electrocatalyst on the support material; then v) removal of at least some of the silicon oxide.Type: ApplicationFiled: July 6, 2021Publication date: July 13, 2023Inventors: Alejandro MARTINEZ BONASTRE, Geoffrey SPIKES
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Publication number: 20230045086Abstract: The present invention provides a metal carbonitride comprising: i) a first metal, M1; and ii) a second metal, M2; wherein M1 is titanium, zirconium or hafnium; and M2 is vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, ruthenium or osmium.Type: ApplicationFiled: March 12, 2021Publication date: February 9, 2023Inventors: Lucy MCLEOD, Jonathan SHARMAN, Geoffrey SPIKES, Richard WALTON
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Patent number: 11139482Abstract: An electrocatalyst material comprising: (i) a support material comprising a plurality of individual support particles or aggregates; (ii) first particles comprising a first metal and an alloying metal; and (iii) second particles consisting of a second metal or a second metal oxide, wherein the second metal is platinum or iridium; wherein each individual support particle or aggregate has dispersed thereon first particles and second particles, characterised in that the mean average particle size of the second particles is smaller than the mean average particle size of the first particles is disclosed. The electrocatalyst material has particular use in an electrode, such as the cathode, of an electrochemical cell, such as a fuel cell.Type: GrantFiled: May 25, 2017Date of Patent: October 5, 2021Assignee: Johnson Matthey Fuel Cells LimitedInventors: Jonathan David Brereton Sharman, Alejandro Martinez Bonastre, Geoffrey Spikes
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Publication number: 20210220912Abstract: The present invention concerns methods of forming metal-containing nanoparticles or oxide thereof, especially metal alloy nanoparticles. The method the steps of providing at least two different kinds of transition metal ion by providing at least two kinds of metal ion-containing compound; a heating step in which the at least two metal ion-containing compounds are subjected to a temperature of at least 300° C. to form the metal alloy nanoparticles; a cooling step comprising cooling the product of step b; and each metal ion-containing compound is a transition metal complex having ligands coordinated to a transition metal ion, the ligands being selected from the group consisting of glyoxime; a glyoxime derivative; salicylaldimine; and a salicylaldimine derivative. The preferred methods are solution-based methods. Products of the methods are also described, as are their uses as electrocatalysts, as well as uses of the metal ion-containing compounds for making nanoparticles.Type: ApplicationFiled: July 19, 2019Publication date: July 22, 2021Inventors: Nicoleta MURESAN, Geoffrey SPIKES
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Publication number: 20200321622Abstract: An electrocatalyst material comprising: (i) a support material comprising a plurality of individual support particles or aggregates; (ii) first particles comprising a first metal and an alloying metal; and (iii) second particles consisting of a second metal or a second metal oxide, wherein the second metal is platinum or iridium; wherein each individual support particle or aggregate has dispersed thereon first particles and second particles, characterised in that the mean average particle size of the second particles is smaller than the mean average particle size of the first particles is disclosed. The electrocatalyst material has particular use in an electrode, such as the cathode, of an electrochemical cell, such as a fuel cell.Type: ApplicationFiled: May 25, 2017Publication date: October 8, 2020Inventors: Jonathan David Brereton SHARMAN, Alejandro MARTINEZ BONASTRE, Geoffrey SPIKES
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Publication number: 20200313201Abstract: The use of an electrocatalyst material in an anode catalyst layer, wherein the electrocatalyst material comprises a support material, the support material comprising a plurality of individual support particles or aggregates wherein each individual support particle or aggregate has dispersed thereon (i) first particles and (ii) second particles, wherein: (i) the first particles comprise Pt optionally alloyed with an alloying metal X1; wherein the optional alloying metal X1 is selected from the group consisting of Rh, Ti, Os, V, Co, Ni, Ga, Hf, Sn, Ir, Pd, Mo, Zn, W, Zr and Re; (ii) the second particles consist essentially of a second metal or a second metal compound wherein the second metal is selected from the group consisting of Ir and Ru and the second metal compound comprises IrX2 wherein X2 is selected from the group consisting of Ta, Nb, Ru, Ni and Co; and wherein if the first particles consist of Pt then the second particles do not comprise IrTa; and wherein if the first particles consist of Pt withoutType: ApplicationFiled: November 22, 2018Publication date: October 1, 2020Inventors: Alejandro MARTINEZ BONASTRE, Jonathan SHARMAN, Geoffrey SPIKES