Abstract:
In an electrochemical device, such as a fuel cell or electrocatalytic oxidation cell, a catalyst electrode is comprised of a catalytic structure having multiple layers of varied densities to enhance gas diffusion throughout the electrode. A first catalyst layer has a first density, and a second catalyst has a second density that is about 33 to 50% of the first density and any additional layers having a density which are less than the previous layer. A gas diffusion layer is adjacent the second catalyst layer.
Abstract:
A method for purifying breathing air using a carbon-based monolith structure impregnated with copper, silver, zinc, and molybdenum species and triethylenediamine, wherein the monolith structure is impregnated by a multiple step process. The method of impregnation results in a carbon-based monolith structure that purifies nuclear, biological, or chemical contaminants under conditions of high flow rate and low pressure drop.
Abstract:
This invention discloses regeneration methods to remove carbon monoxide (CO) from reformate fuel using an adsorption and electro-catalytic oxidation (ECO) approach. One method of the invention comprises a first ECO cell and a second ECO cell, and the other method comprises a first ECO cell and a first charge storage device. Both methods eliminate the requirement of an external power supply that leads to higher cost, additional power consumption and more processor complexity for the CO removal processor.