Leland Stanford Junior University

Volkswagen Ag

Danmarks Tekniske Universitet

Volkswagen Aktiengesellschaf

Thomas F Jaramillo

Friedrich B Prinz

Yongmin Kim

Thomas Schladt

Shicheng Xu

Tanja Graf

Gerold Huebner

Drew C Higgins

Zhaoxuan Wang

Dong Un Lee

Jonathan Edward Mueller

Kyung Min Lee

Hanna-Lena Wittern

Marat Orazov

Maha Yusuf

Jens K Nørskov

Zhenan Bao

Zhebo Chen

Ib Chorkendorff

Beth L Pruitt

Matteo Cargnello

Shucheng Chen

Jonathan Müller

Jens Nørskov

Glavas Vedran

Zhihua Chen

Jakob Kibsgaard

Ifan Stephens

Alexander S Bondarenko

Tobias Johansson

John Lin

Jeffrey Greeley

Michaela Burke Stevens

Joshua M McEnaney

Alessandro Gallo

Jan Rossmeisl

Hadi Abroshan

Samira Siahrostami

Laurie A King

Melissa E Kreider

Heine Anton Hansen

John Schwalbe

Tom Larsen

Timothy Goh

Seoin Back

Arnold J Forman

Frédéric Loizeau

Soonwook Hong

Aayush Ranjan Singh

Pierre-Alexandre Gross

Samuel Dull

Alexander Bondarenko

A catalyst structure includes: (1) a substrate; (2) a catalyst layer on the substrate; and (3) an adhesion layer disposed between the substrate and the catalyst layer. In some implementations, an average thickness of the adhesion layer is about 1 nm or less. In some implementations, a material of the catalyst layer at least partially extends into a region of the adhesion layer. In some implementations, the catalyst layer is characterized by a lattice strain imparted by the adhesion layer.

Electrochemical catalysts with enhanced catalytic activity

A supported catalyst includes: (1) a catalyst support; and (2) deposits of a catalyst covering the catalyst support, wherein the deposits have an average thickness of about 2 nm or less, and the deposits are spaced apart from one another.

Ultrathin electrochemical catalysts on catalyst support for proton exchange membrane fuel cells

An electrode catalyst for an Oxygen Reduction Reaction (ORR) is provided that includes a transition metal nitride layer on a substrate, an ORR surface oxide layer deposited on the transition metal nitride layer, where the ORR surface oxide layer includes from sub-monolayer to 20 surface oxide monolayers.

Oxidized surface layer on transition metal nitrides: active catalysts for the oxygen reduction reaction

A membrane-free electrochemical reactor and fuel-cell having a collection chamber between a first and second chamber, a mesoporous carbon paper cathode between the first chamber and the collection chamber, a mesoporous carbon paper anode between the second chamber and the collection chamber, the cathode is coated with an oxygen reduction reaction catalyst that imparts a two-electron partial reduction reaction to hydrogen peroxide, the anode is coated with an oxygen evolution reaction coating or a hydrogen oxidation reaction coating, oxygen/air input and output ports connected to the first chamber, KOH/water input and output ports connected to the second chamber that are in an open state under an electrolyzer mode, H/water input and output ports connected to the second chamber that are in an open state under a fuel-cell mode, a second KOH/water input port connected to the collection chamber, and a hydrogen peroxide/KOH/water output port connected to the collection chamber.

Electrochemical hydrogen peroxide generating device

A manufacturing process includes: depositing a first catalyst on a first gas diffusion layer (GDL) to form a first catalyst-coated GDL; depositing a first ionomer on the first catalyst-coated GDL to form a first gas diffusion electrode (GDE); depositing a second catalyst on a second GDL to form a second catalyst-coated GDL; depositing a second ionomer on the second catalyst-coated GDL to form a second GDE; and laminating the first GDE with the second GDE and with an electrolyte membrane disposed between the first GDE and the second GDE to form a membrane electrode assembly (MEA). A MEA includes a first GDL; a second GDL; an electrolyte membrane disposed between the first GDL and the second GDL; a first catalyst layer disposed between the first GDL and the electrolyte membrane; and a second catalyst layer disposed between the second GDL and the electrolyte membrane, wherein a thickness of the electrolyte membrane is about 15 &#x3bc;m or less.

Scalable roll-to-roll fabrication of high-performance membrane electrode assemblies

An electro-thermochemical cycling system for producing ammonia is provided that includes a reaction chamber having a metal compound input port, an anode suitable for oxidation in contact with the metal compound and configured for oxidation of hydroxide ions to water and oxygen, a cathode suitable for plating in contact with the metal compound and configured to electrolyze the metal compound to metal, a voltage source connecting the cathode and anode, a nitrogen port to the reaction chamber that combines nitrogen with the electrolyzed metal on the cathode to form a metal-nitrogen compound proximal to the nitrogen input, an atomic hydrogen port to the reaction chamber that combines with the metal-nitrogen compound to form ammonia, and an ammonia output port from the reaction chamber, where a metal compound input port inputs the metal compound to the reaction chamber according to a depletion rate of the metal compound in the reaction chamber.

Electro-thermochemical Li cycling for NH3 synthesis from N2 and H2O

Disclosed are improved methods and structures for electrochemical sensors that may advantageously sense/detect chemical species including pollutants and/or energetics in a gaseous phase. Sensors according to the present disclosure may advantageously be fabricated using large scale microfabrication techniques and materials.

Electrochemical sensor

The present invention concerns electrode catalysts used in fuel cells, such as proton exchange membrane (PEM) fuel cells. The invention is related to the reduction of the noble metal content and the improvement of the catalytic efficiency by low level substitution of the noble metal to provide new and innovative catalyst compositions in fuel cell electrodes. The novel electrode catalysts of the invention comprise a noble metal selected from Pt, Pd and mixtures thereof alloyed with a further element selected from Sc, Y and La as well as any mixtures thereof, wherein said alloy is supported on a conductive support material.

Platinum and palladium alloys suitable as fuel cell electrodes

A method of forming a high surface area transparent conducting electrode is provided that includes depositing a transparent conducting thin film on a conductive substrate, where the transparent conducting thin film includes transparent conductive particles and a solution-based transparent conducting adhesive layer which serves to coat and bind together the transparent conducting particles, and heat treating the transparent conducting adhesion layer on the conductive substrate, where an increased surface area transparent conducting electrode is formed.

Method of forming macro-structured high surface area transparent conductive oxide electrodes

Growing community of inventors

Menlo Park, CA, United States of America

Thomas F Jaramillo