The State University of New York

Honda Motor Co., Ltd.

Nancy N Kariuki

Chuan-Jian Zhong

Jin Luo

Mathew M Maye

Ting He

Li Han

Lingyan Wang

Peter N Njoki

Linyang Wang

Derrick Mott

A method of preparing carbon-loaded, gold-based nanoparticle catalysts useful as anode catalysts for the electrocatalytic methanol oxidation reaction (MOR) as well as the oxygen reduction reaction (ORR). AuPtMcatalysts may be prepared by either a two-phase protocol or by a thermal decomposition/reduction protocol. The prepared nanoparticles having different bimetallic ratios are assembled on carbon black support materials and activated by thermal treatment. This approach provides good control of nanoparticle size, composition and/or surface properties. Electrocatalytic MOR activities of the prepared and activated AuPt nanoparticle provided in accordance with the methods of the invention are present in both acidic and alkaline electrolytes.

Method of synthesizing and processing carbon-supported, gold and gold-based multimetallic nanoparticles for use as catalysts

The present teachings are directed toward single metal and alloy nanoparticles and synthesis methods for preparing single metal and alloy nanoparticles.

Metal and alloy nanoparticles and synthesis methods thereof

A method is featured for fabricating Carbon-supported AuPt nanoparticle catalysts for fuel cells, and particularly fuel cells using methanol as the fuel. The method prepares AuPt-based fuel cell catalysts having a wide range of controllable Au:Pt ratios. The AuPt catalysis are supportable on both carbon black (C) and C/TiOsupport materials. These materials demonstrate electro-catalytic activity towards CO and methanol oxidation, and Oreduction. The same catalyst material is useful in constructing both anodes and cathodes, and demonstrates bifunctional activity.

Gold-based alloy nanoparticles for use in fuel cell catalysts

There is provided a method of preparing carbon supported, ternary alloy composition core-shell PtVFe nanoparticles for use as fuel cell electrocatalysts. These catalysts have been found particularly useful for oxygen reduction reactions. The alloy nanoparticles can be assembled on carbon supports which then may undergo subsequent activation and/or calcination treatments. The method, combined with new synthetic feed and processing conditions, provides core-shell PtVFe alloy nanoparticles of 1&#x2013;3 nm size. The catalyst-produced high monodispersity, controlled composition are highly dispersed, and have a uniform distribution. Finally, the correlation of the preparation and treatment parameters to the ORR catalytic activities of the prepared nanoparticles is described. The catalysts exhibit ORR in the range of 2 to 4 times more than a standard Pt/carbon catalyst.

Core-shell synthesis of carbon-supported alloy nanoparticle catalysts

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Binghamton, NY, United States of America

Nancy N Kariuki