Audi Ag

Ballard Power Systems Corporation

Toyota Jidosha Kabushiki Kaisha

Utc Power Corporation

United Technologies Corporation

The State University of New York

Minhua Shao

Belabbes Merzougui

Lesia V Protsailo

Susanne Marie Opalka

Patrick L Hagans

Jingguang Chen

Chuan-Jian Zhong

Michael Paul Humbert

Jin Luo

Keiichi Kaneko

Tetsuo Kawamura

Sathya Motupally

John W Weidner

Peter N Njoki

Brandon Howard Smith

Jonathan H Odell

Brigid Wanjala

Rameshwori Loukrakpam

According to an embodiment, a method of processing a material for a catalyst includes establishing an electrical potential on a porous electrode. Core particles are directed through the porous electrode. A layer of metal is deposited on the core particles as the particles pass through the porous electrode. According to an embodiment, an example assembly for processing a material for a catalyst includes a housing that establishes a path for particles to move through the housing. A porous electrode is situated within the housing for permitting core particles to move through the porous electrode. A layer of metal can be deposited on the core particles as the particles pass through the porous electrode.

Method and system for core-shell catalyst processing

A core-shell catalyst includes a porous, palladium-based core particle and a catalytic layer on the particle. The particle can be made by providing a precursor particle that has palladium interspersed with a sacrificial material. At least a portion of the sacrificial material is then removed such that the remaining precursor particle is porous.

Core-shell catalyst and method for palladium-based core particle

A nanoparticle includes a noble metal skeletal structure. The noble metal skeletal structure is formed as an atomically thin layer of noble metal atoms that has a hollow center.

Platinum nanoparticles having hollow skeletal structures and methods of making

A supported catalyst includes a plurality of support particles that each include a carbon support and a layer disposed around the carbon support. The layer is selected from a metal carbide, metal oxycarbide, and combinations thereof. A catalytic material is disposed on the layers of the support particles.

Fuel cell catalyst including carbon support particles with metal carbide layer and catalytic material and fuel cell using the same

A method of forming a catalyst material includes hindering the reaction rate of a displacement reaction and controlling the formation of platinum clusters, where an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms.

Method of forming a catalyst with an atomic layer of platinum atoms

A method for removing a surfactant from a palladium nanoparticle includes exposing the palladium nanoparticle to hydrogen and removing the surfactant from the palladium nanoparticle. A method includes synthesizing a palladium nanoparticle using a surfactant. The surfactant influences a geometric property of the palladium nanoparticle and bonds to the palladium nanoparticle. The method also includes exposing the palladium nanoparticle to hydrogen to remove the surfactant from the palladium nanoparticle.

Surfactant removal from palladium nanoparticles

A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m/g.

Supported catalyst

An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum.

Platinum monolayer for fuel cell

A method for forming catalytic nanoparticles includes forming core-shell catalytic nanoparticles and processing the core-shell catalytic nanoparticles. The core-shell catalytic nanoparticles have a palladium core enclosed by a platinum shell. The core-shell catalytic nanoparticles are processed to increase the percentage of the surface area of the core-shell catalytic nanoparticles covered by the platinum shell.

Method to prepare full monolayer of platinum on palladium based core nanoparticles

A method of forming a catalyst structure includes providing a catalyst support structure having a core and an inner carbide film on the core, depositing catalyst nanoparticles on the catalyst support structure, and forming an outer carbide film on the catalyst support structure after the step of depositing catalyst nanoparticles. The outer carbide film is preferentially formed on the catalyst support structure compared to the catalyst particles.

Carbide stabilized catalyst structures and method of making

A catalyst support for an electrochemical system includes a high surface area refractory material core structure and boron-doped diamond. The BDD modifies the high surface area refractory material core structure.

Boron-doped diamond coated catalyst support

A fuel cell catalyst support includes a fluoride-doped metal oxide/phosphate support structure and a catalyst layer, supported on such fluoride-doped support structure. In one example, the support structure is a sub-stechiometric titanium oxide and/or indium-tin oxide (ITO) partially coated or mixed with a fluoride-doped metal oxide or metal phosphate. In another example, the support structure is fluoride-doped and mixed with at least one of low surface carbon, boron-doped diamond, carbides, borides, and silicides.

Fuel cell catalyst support with fluoride-doped metal oxides/phosphates and method of manufacturing same

A catalytic nanoparticle includes a porous, hollow core and an atomically thin layer of platinum atoms on the core. The core is a porous palladium, palladium-M or platinum-M core, where M is selected from the group consisting of gold, iridium, osmium, palladium, rhenium, rhodium and ruthenium.

Platinum monolayer on hollow, porous nanoparticles with high surface areas and method of making

A method of generating electrical power includes flowing hydrogen across an anode, splitting the hydrogen into protons and electrons using a catalyst attached to the anode, directing the electrons to a circuit to produce electrical power, flowing oxygen across a cathode, splitting the oxygen molecules into oxygen atoms using a cathode catalyst, passing the protons through an electrolyte to the cathode, and combining the protons with oxygen to form water. The cathode catalyst includes a plurality of nanoparticles having terraces formed of platinum, and corner regions and edge regions formed of a second metal.

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Minhua Shao