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公开(公告)号：US20210013522A1
公开(公告)日：2021-01-14
申请号：US15733645
申请日：2019-03-27
发明人： Andrew J.L. Steinbach , Amy E. Hester , Andrew T. Haug , Krzysztof A. Lewinski , Sean M. Luopa , Grant M. Thoma
IPC分类号： H01M4/92 , H01M8/1004 , H01M4/86 , H01M4/90
摘要： Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material comprising at least 90 atomic percent collectively Pt, Ni, and Cr, wherein the Pt is present in a range from 32.4 to 35.8 atomic percent, the Ni is present in a range from 57.7 to 63.7 atomic percent, and the Cr is present in a range from 0.5 to 10.0 atomic percent, and wherein the total atomic percent of Pt, Ni, and Cr equals 100. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.
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公开(公告)号：US20220115675A1
公开(公告)日：2022-04-14
申请号：US17645072
申请日：2021-12-20
摘要： Nanoporous oxygen reduction catalyst material comprising PtNiIr. The nanoporous oxygen reduction catalyst material is useful, for example, in fuel cell membrane electrode assemblies.
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公开(公告)号：US20210408555A1
公开(公告)日：2021-12-30
申请号：US15733735
申请日：2019-04-11
发明人： Andrew J.L. Steinbach , Andrew T. Haug , Krzysztof A. Lewinski , Amy E. Hester , Grant M. Thoma , Cedric Bedoya
IPC分类号： H01M4/92
摘要： Catalyst comprising an Ir layer having an outer layer with a layer comprising Pt directly thereon, wherein the Ir layer has an average thickness in a range from 0.04 to 30 nanometers, wherein the layer comprising Pt has an average thickness in a range from 0.04 to 50 nanometers, and wherein the Pt and Ir are present in an atomic ratio in a range from 0.01:1 to 10:1. Catalysts described herein are useful, for example, in fuel cell membrane electrode assemblies.
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公开(公告)号：US20210384523A1
公开(公告)日：2021-12-09
申请号：US17288021
申请日：2019-10-25
发明人： Andrew T. Haug , John E. Abulu , Matthew J. Lindell , Tyler S. Matthews , Andrew J.L. Steinbach , Fuxia Sun , Michael A. Yandrasits
IPC分类号： H01M4/92 , H01M4/86 , H01M4/88 , C09D127/18 , C09D141/00
摘要： Described herein is a coating composition comprising: (a) a metal catalyst, wherein the metal catalyst comprises at least one of platinum, ruthenium, iridium, and alloys and combinations thereof; (b) an at least highly fluorinated ionomer comprising a polymer backbone and a plurality of first side chains pendant therefrom, wherein the first side chain comprises at least one protogenic group, wherein the protogenic group is selected from a sulfonic acid, a bis(sulfonyl)imide, a sulfonamide, a sulfonyl methide, and salts and combinations thereof, and wherein the polymer backbone comprises an average of at least 14 carbon atoms between adjacent first side chains along the polymer backbone; and (c) a solvent. Such coating compositions may be used to make electrodes for electrochemical cells and have been shown to have reduced poisoning of the catalyst.
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公开(公告)号：US20190267638A1
公开(公告)日：2019-08-29
申请号：US16344769
申请日：2017-10-11
摘要： Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material having the formula PtxNiyAuz, wherein x is in a range from 27.3 to 29.9, y is in a range from 63.0 to 70.0, and z is in a range from 0.1 to 9.6. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.
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公开(公告)号：US20210260989A1
公开(公告)日：2021-08-26
申请号：US17274670
申请日：2019-09-20
发明人： Raymond P. Johnston , Andrew J.L. Steinbach , Krzysztof A. Lewinski , Fuxia Sun , Andrew T. Haug , John E. Abulu , Sean M. Luopa , Jiyoung Park , Attila Molnar , Cedric Bedoya
IPC分类号： B60K15/03 , C25B1/04 , C25B9/23 , C25B11/055 , C25B11/081 , F17C5/06
摘要： A hydrogen fueling system for generating hydrogen on demand is described. The system includes an electrolyzer configured to generate at least a predetermined quantity of hydrogen in a predetermined time when operated at no less than a predetermined current density and provided with at least a predetermined electrical energy over the predetermined time, where the predetermined quantity of hydrogen is at least 1 kg of hydrogen, the predetermined time is no more than 30 minutes, and the predetermined current density is at least 5 A/cm2. The system may further include an electrical energy storage system electrically connected to the electrolyzer and capable of supplying at least 20% of the predetermined electrical energy over the predetermined time. The electrolyzer may include an anode including a plurality of acicular particles dispersed in an ionomer binder, where the acicular particles include iridium.
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公开(公告)号：US20190260035A1
公开(公告)日：2019-08-22
申请号：US16344773
申请日：2017-10-11
摘要： Nanoporous oxygen reduction catalyst material comprising PtNiAu. The nanoporous oxygen reduction catalyst material is useful, for example, in fuel cell membrane electrode assemblies.
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