Apparatus and method for the synthesis and treatment of metal monolayer electrocatalyst particles in batch or continuous fashion

US20130056359A1Inactive Publication Date: 2013-03-07BROOKHAVEN SCI ASSOCS
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
BROOKHAVEN SCI ASSOCS
Publication Date
2013-03-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

An apparatus and method for the synthesis and treatment of electrocatalyst particles in batch or continuous fashion is provided. In one embodiment, the apparatus is comprised of a three-electrode cell which includes a reference electrode, a counter electrode, and a working electrode. The working electrode is preferably a cylindrical vessel having an electrically conductive region. The electrode assembly is introduced into a slurry containing metal ions and a plurality of particles. During operation an electrical potential is applied and the working electrode is rotated at a predetermined speed. When particles in the slurry collide with the electrically conductive region the transferred charge facilitates deposition of an ad-layer of the desired metal. In this manner film growth can commence on a large number of particles simultaneously. This process is especially suitable as a commercial thin film deposition process for forming catalytically active layers on nanoparticles for use in energy conversion devices.
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Description

[0001] This application is an International PCT application, which claims the benefit of U.S. Provisional Application No. 61 / 316,874, filed on Mar. 24, 2010 which is hereby incorporated by reference in its entirety.

[0002] This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.BACKGROUND

[0003] I. FIELD OF THE INVENTION

[0004] This invention relates generally to the controlled deposition of ultrathin films. In particular, the present invention relates to an apparatus and method for depositing atomic submonolayer to multilayer thin films on a plurality of particles in batch or continuous fashion. The present invention also relates to nanoparticle electrocatalysts having ultrathin catalytically active layers formed using the disclosed apparatus and method.

[0005] II. BACKGROUND OF THE RELATED ART

[0006] Metals such as platinum (Pt), palladium (Pd), ruthenium (Ru), and re...

Claims

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