Abstract:
Novel catalytic materials and novel methods of preparing M-N-C catalytic materials utilizing a sacrificial support approach and using inexpensive active polymers as the carbon and nitrogen source and readily available metal precursors are described.
Abstract:
Methods for forming novel fuel cell catalysts are described. The catalyst has a physical structure that is the inverse image of a plurality of hierarchically structured sacrificial support particles. The particles may be formed independently and then infused with one or more transitional metallic salts and nitrogen carbon precursors, or the sacrificial support precursors, transitional metallic salts, and nitrogen carbon precursors may all be combined in such a way that a hierarchically structured sacrificial support with the infused transitional metallic salts and nitrogen carbon precursors is formed in a single step. The infused sacrificial support is then pyrolized, at least once, and the sacrificial support is removed, resulting in the catalyst.
Abstract:
Supercapacitive bioelectrical systems (SC-BESs) wherein the anode and cathode act as electrodes for a self-powered internal supercapacitor. The BES may further be enhanced by the use of optimized catalysts and enzymes to increase cell voltage and the use of a third capacitive electrode (AdE) short-circuited to the BES cathode and coupled to the BES anode to improve the power output of the self-powered internal supercapacitor.
Abstract:
Engineered stable multi-organism (or multi-cell type) communities encapsulated in a media that slows or prohibits certain metabolic functions such as cell division, but maintains other metabolic functions.
Abstract:
A method of preparing M-N-C catalysts utilizing a sacrificial support approach and inexpensive and readily available polymer precursors as the source of nitrogen and carbon is disclosed. Exemplary polymer precursors include those that do not form complexes with iron, but which do complex with silica, for example, polyetheleneimine (PEI), Poly(2-ethyl-2-oxazoline), Poly(acrylamide-co-diallyldimethylammonium chloride), Poly(melamine-co-formaldehyde), Poly[[6-[(l,l,3,3-tetramethylbutyl)amino]-s-triazine-2,4-diyl]-[(2,2,6,6-tetramethyl-4-piperidyl)imino] -hexamethylene- [(2,2,6,6-tetramethyl-4-piperidyl)imino] and the like.
Abstract:
Novel nano-sized materials and methods for making the same are described. The novel nano-sized materials are suitable for use as catalytic supports and, more specifically, can be decorated with one or more catalytic materials so as to form suitable catalysts for DLFC fuel cells utilizing alkaline media. The present disclosure also provides a small, portable, power supply system that incorporates catalysts utilizing the decorated nano-sized materials described herein.
Abstract:
A porous metal-oxide composite particle suitable for use as a oxygen reduction reaction or oxygen evolution reaction catalyst and sacrificial support based methods for making the same.
Abstract:
A method of preparation of metal-chalcogen-nitrogen-carbon (M-Ch-N-C) catalytic material utilizing a sacrificial support approach and using inexpensive and readily available precursors is described. Furthermore, the catalytic materials synthesized using the disclosed methods include multiple types of active sites.
Abstract:
A method of preparing M-N-C catalysts utilizing a sacrificial support approach and inexpensive and readily available polymer precursors as the source of nitrogen and carbon is disclosed. Exemplary polymer precursors include non-porphyrin precursors with no initial catalytic activity. Examples of suitable non-catalytic non-porphyrin precursors include, but are not necessarily limited to low molecular weight precursors that form complexes with iron such as 4-aminoantipirine, phenylenediamine, hydroxysuccinimide, ethanolamine, and the like.