Leland Stanford Junior University

Volkswagen Ag

Volkswagen Aktiengesellschaf

Gerold Huebner

Friedrich B Prinz

Thomas Schladt

Shicheng Xu

Yongmin Kim

Thomas F Jaramillo

Jonathan Edward Mueller

Tanja Graf

Zhaoxuan Wang

Dong Un Lee

Drew C Higgins

Maha Yusuf

Kyung Min Lee

Marat Orazov

Hanna-Lena Wittern

Sebastian Kirsch

Vedran Glavas

Timothy Goh

Soonwook Hong

Samuel Dull

Jonathan Müller

Glavas Vedran

A manufacturing process includes: depositing a catalyst support on a gas diffusion layer to form a catalyst support-coated gas diffusion layer; depositing a catalyst on the catalyst support-coated gas diffusion layer to form a catalyst-coated gas diffusion layer; and depositing an ionomer on the catalyst-coated gas diffusion layer to form an ionomer-coated gas diffusion layer. A membrane electrode assembly for a fuel cell includes: a gas diffusion layer; a polymer electrolyte membrane; and a catalyst layer disposed between the gas diffusion layer and the polymer electrolyte membrane, wherein the catalyst layer includes an ionomer, and a concentration of the ionomer varies within the catalyst layer according to a concentration profile.

Catalyst layer with extended surface area and method of forming such catalyst layer for polymer electrolyte fuel cells

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 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

Growing community of inventors

Wolfsburg, Germany

Gerold Huebner