Fuel-Cell Catalyst-Layer Resistance via Hydrogen Limiting-Current Measurements

Accurate Ex-situ Measurements of PEM Fuel Cells Catalyst Layer Dry Diffusivity

Polymer electrolyte membrane fuel cells (PEMFC) efficiently convert the reaction energy of hydrogen and oxygen to electricity, water and heat. The oxygen reduction reaction occurs in composite nanostructured catalyst layers (CL) formed from Pt nanoparticles supported on a network of carbon particle agglomerates. Oxygen reaches the reaction site through diffusion. Understanding the diffusion pro...

Hydrogen Fuel Cell Automobiles

With gasoline now more than $2.00 a gallon, alternate automobile technologies will be discussed with greater interest and developed with more urgency. For our government, the hydrogen fuel cell-powered automobile is at the top of the list of future technologies. This paper presents a simple description of the principles behind this technology and a brief discussion of the pros and cons. It is a...

Hydrogen Fuel Cell Bus Evaluation

Global concern for the environment has been increasing throughout the last decade, and “green” technologies are being emphasized all over the world. Research and development of advanced technologies for the transportation sector has been growing at a rapid pace in an effort to reduce petroleum imports and lower emissions. Developing technologies have recently been incorporated into transit buse...

High-performance hydrogen fuel cell using nitrate reduction reaction on a non-precious catalyst.

The H(2)-NO(3)(-) electrochemical cell using nitrate reduction on a non-precious cathode catalyst shows much improved efficiency despite ∼75% reduction of Pt metal loading as compared to typical PEMFCs using typical ORR on precious catalysts.

Proton Conductivity of Graphene-based Nafion® Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell