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公开(公告)号：US11139482B2
公开(公告)日：2021-10-05
申请号：US16303912
申请日：2017-05-25
IPC分类号： H01M8/04 , H01M4/86 , H01M4/88 , H01M4/92 , H01M8/1018
摘要： 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.
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公开(公告)号：US20210296656A1
公开(公告)日：2021-09-23
申请号：US17201817
申请日：2021-03-15
发明人： Jonathan David Brereton Sharman , Brian Ronald Theobald , David Thompsett , Edward Anthony Wright
IPC分类号： H01M4/92 , H01M8/04228 , H01M8/04225 , H01M4/86 , H01M4/90 , C25B9/23 , C25B11/091 , C25B11/093
摘要： A catalyst layer includes (i) an electrocatalyst, and (ii) a water electrolysis catalyst, iridium or iridium oxide and one or more metals M or an oxide thereof, wherein M is selected from transition metals and/or Sn, with the exception of ruthenium. Such a catalyst layer has utility in fuel cells that experience high electrochemical potentials.
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公开(公告)号：US20210220912A1
公开(公告)日：2021-07-22
申请号：US17255579
申请日：2019-07-19
发明人： Nicoleta MURESAN , Geoffrey SPIKES
IPC分类号： B22F9/24 , B22F1/00 , H01M8/1004 , H01M4/92
摘要： 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.
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公开(公告)号：US20210143443A1
公开(公告)日：2021-05-13
申请号：US17153927
申请日：2021-01-21
IPC分类号： H01M4/92 , H01M8/1004 , H01M4/86 , B01J21/18 , B01J23/648 , B01J37/02 , H01M8/1018
摘要： A method of operating a fuel cell having an anode, a cathode and a polymer electrolyte membrane disposed between the anode and the cathode, includes feeding the anode with an impure hydrogen stream having low levels of carbon monoxide up to 5 ppm, and wherein the anode includes an anode catalyst layer including a carbon monoxide tolerant catalyst material, wherein the catalyst material includes: (i) a binary alloy of PtX, wherein X is a metal selected from the group consisting of rhodium and osmium, and wherein the atomic percentage of platinum in the alloy is from 45 to 80 atomic % and the atomic percentage of X in the alloy is from 20 to 55 atomic %; and (ii) a support material on which the PtX alloy is dispersed; wherein the total loading of platinum group metals (PGM) in the anode catalyst layer is from 0.01 to 0.2 mgPGM/cm2.
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公开(公告)号：US10833334B2
公开(公告)日：2020-11-10
申请号：US16072946
申请日：2017-01-26
IPC分类号： B01J23/40 , B01J23/48 , B01J23/60 , B01J23/648 , H01M4/88 , H01M4/92 , H01M4/90 , H01M8/1004 , H01M8/1018
摘要： A process for preparing a catalyst material, said catalyst material comprising a support material, a first metal and one or more second metals, wherein the first metal and the second metal(s) are alloyed and wherein the first metal is a platinum group metal and the second metal(s) is selected from the group of transition metals and tin provided the second metal(s) is different to the first metal is disclosed. The process comprises depositing a silicon oxide before or after deposition of the second metal(s), alloying the first and second metals and subsequently removing silicon oxide. A catalyst material prepared by this process is also disclosed.
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公开(公告)号：US20200313201A1
公开(公告)日：2020-10-01
申请号：US16761873
申请日：2018-11-22
摘要： 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 without alloying metal X1 and the second particles consist essentially of a second metal which is Ir, each individual support particle or aggregate of the support material of the electrocatalyst material has dispersed thereon only the said first and second particles; or wherein each individual support particle or aggregate has dispersed thereon (i) first particles and (ii) third particles, wherein: (iii) the third particles comprise Au or a third metal alloy; wherein the third metal alloy is selected from the group consisting of AuX3 and PdX4, wherein X3 is selected from the group consisting of Pt, Pd, Cu, Ir and Sn; and X4 is selected from the group consisting of Hg, Au, Sn, Co, Ni, Ga, In, Zn, W and Pb.
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公开(公告)号：US20200303753A1
公开(公告)日：2020-09-24
申请号：US16303942
申请日：2017-05-25
IPC分类号： H01M8/1004 , H01M8/1027 , H01M8/1053 , H01M8/106 , H01M8/1088
摘要： A reinforced ion-conducting membrane comprises a planar reinforcing component which comprises a porous polymer material; an ion-conducting component embedded in at least a region of the planar reinforcing component, which ion-conducting component comprises an ion-conducting polymer material; and linking groups which are chemically bonded to both the planar reinforcing component and the ion-conducting component. The reinforced ion-conducting membrane is useful as the membrane in a membrane-electrode assembly for example as used in fuel cells.
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公开(公告)号：US20200099061A1
公开(公告)日：2020-03-26
申请号：US16472503
申请日：2017-12-18
摘要： A catalyst-coated membrane (CCM) for use in a water electrolyser, having a laminate structure comprising: a first layer comprising a first membrane component having a cathode catalyst layer disposed on a first face thereof; a second layer comprising a second membrane component having an anode catalyst layer disposed on a first face thereof; and an intermediate layer disposed between the first and second layers, comprising a third membrane component having a recombination catalyst layer disposed on a first face thereof is disclosed. The CCM is useful within a water electrolyser. The recombination catalyst layer reduces the risk associated with hydrogen crossover and allows thinner membranes with lower resistance to be used.
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公开(公告)号：US10424795B2
公开(公告)日：2019-09-24
申请号：US15116572
申请日：2015-02-04
IPC分类号： H01M8/0234 , H01M4/86 , H01M4/88 , H01M8/0243 , H01M8/0245 , H01M8/1018
摘要： A porous gas diffusion substrate that includes: (a) a porous non-woven web comprising carbon fibers; and (b) a carbonaceous residue; wherein the carbonaceous residue is embedded within the porous non-woven web; (c) a fluorinated polymer; and (d) inert particles wherein at least some of the carbon fibers of the porous non-woven web have a coating comprising the fluorinated polymer and inert particles is disclosed.
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公开(公告)号：US10218022B2
公开(公告)日：2019-02-26
申请号：US15128026
申请日：2015-03-24
发明人： David Edward Barnwell , Robert Jeffrey Coleman , Angus Dickinson , Peter Geoffrey Gray , Jorge Manuel Caramelo Soares
IPC分类号： H01M8/1004 , H01M8/1018 , H01M8/1053 , H01M8/1058 , H01M8/0271 , H01M8/0284 , H01M8/0289 , H01M8/1007
摘要： A process for manufacturing a reinforced membrane-seal assembly includes: (i) providing a carrier material; (ii) providing a planar reinforcing component having one or more first regions including pores and a second region including pores, the first regions being patches and non-continuous and the second region surrounding the first regions and being continuous; (iii) depositing an ion-conducting component; (iv) drying the ion-conducting component; (v) depositing a seal component; (vi) drying the seal component (vii) removing the carrier material. In embodiments, ion-conducting component fills the pores in the first regions and seal component fills the pores in the second region; steps (ii), (iii) and (v) can be carried out in any order; step (iv) is carried out subsequent to step (iii); step (vi) is carried out subsequent to step (v); and steps (iv) and (vi) are carried out subsequent to step (ii). Also disclosed is an assembly prepared by such process.
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