摘要:
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.
摘要:
An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum.
摘要:
Provided is a method for making a supported metal catalyst. The method includes forming a mixture comprising a high surface area support, a reducing agent precursor that decomposes to produce reducing gases below about 1200 °C, and a metal catalyst precursor. The mixture is heated to a temperature sufficient to decompose the reducing agent precursor to produce a reducing agent, and then cooled to form the supported metal catalyst.
摘要:
The invention relates to a method for preparing a substrate surface structured with thermally stable metal alloy nanoparticles, which method comprises - providing a micellar solution of amphiphilic molecules such as organic diblock or multiblock copolymers in a suitable solvent; - loading the micelles of said micellar solution with metal ions of a first metal salt; - loading the micelles of said micellar solution with metal ions of at least one second metal salt; - depositing the metal ion-loaded micellar solution onto a substrate surface to form a (polymer) film comprising an ordered array of (polymer) domains; co-reducing the metal ions contained in the deposited domains of the (polymer) film by means of a plasma treatment to form an ordered array of nanoparticles consisting of an alloy of the metals used for loading the micelles on the substrate surface. The invention also provides a nanostructured substrate surface obtainable by said method as well as the use of said nanostructured substrate surface as a catalyst.
摘要:
The invention pertains to heterogenous noble metal nanostructures comprising silver salts and different noble metals, and methods for synthesis and use of various nanocomposite materials having silver salts and different noble metals.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines geträgerten Oxidationskatalysators mit Polyanilin oder einem Polyanilinderivat als Träger und einer katalytisch aktiven Spezies, erhalten aus einer Verbindung auf der Basis eines Metalls aus den Gruppen 8 bis 11 des Periodensystems der Elemente. Ferner betrifft die Erfindung den nach dem erfindungsgemäßen Verfahren erhaltenen geträgerten Katalysator sowie ein Verfahren zur Oxidation von Kohlenmonoxid unter Verwendung dieses Katalysators. Außerdem hat die Erfindung eine Brennstoffzelle zum Gegenstand, die neben dem eigentlichen Brennstoffzellen-Katalysator mit dem erfindungsgemäßen geträgerten Katalysator zum Zwecke der Entgiftung, d.h. Kohlenmonoxidentfernung, der eingesetzten Gase ausgestattet ist.
摘要:
There is disclosed a process for producing an electrochemical cathode (18) for an electrochemical cell (10) comprised of a current collecting layer or substrate (32) laminated to a layer of a nonwoven conductive fibrous web (34), preferably of conductive carbon fibers, impregnated with a mixture of silver-containing carbon particles and a nonfibrous polymeric substance, and optionally with a hydrophobic microporous film (36) or layer disposed on one of the layers of the nonwoven conductive fibrous web (34), as well as the product produced thereby.