US 10,651,478 B2 · Electrodes having Pt nanoparticles on RuO2 nanoskins

Abstract

An article having a titanium, titanium carbide, titanium nitride, tantalum, aluminum, silicon, or stainless steel substrate, a RuO2 coating on a portion of the substrate; and a plurality of platinum nanoparticles on the RuO2 coating. The RuO2 coating contains nanoparticles of RuO2. A method of: immersing the substrate in a solution of RuO4 and a nonpolar solvent at a temperature that is below the temperature at which RuO4 decomposes to RuO2 in the nonpolar solvent in the presence of the article; warming the article and solution to ambient temperature under ambient conditions to cause the formation of a RuO2 coating on a portion of the article; and electrodepositing platinum nanoparticles on the RuO2 coating.

Claims20

Dependent claims

An article comprising:

a substrate comprising titanium, a titanium carbide, a titanium nitride, tantalum, aluminum, silicon, or stainless steel;
a RuO2 coating on a portion of the substrate;
wherein the coating comprises nanoparticles of RuO2;
and
a plurality of platinum nanoparticles on the RuO2 coating;
wherein the RuO2 coating is made by a method comprising:
immersing the substrate in a solution of RuO4 and a nonpolar solvent at a temperature that is below the temperature at which RuO4 decomposes to RuO2 in the nonpolar solvent in the presence of the substrate;
and
warming the substrate and solution to ambient temperature under ambient conditions to cause the formation of the coating.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/723,878Filed 21 Dec 2012 · continuation in part

Priority

5 Oct 2007

Published

US 2013/0122401 A116 May 2013

Granted

12 May 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

H01M 4/8853
Methods for deposition of the catalytic active composition: electrodeposition
C23C 18/1216
Oxides, e.g. ceramics: metal oxides
C23C 18/1225
Characterised by the deposition of inorganic material other than metallic material: deposition of multilayers of inorganic material
C23C 18/1295
Process of deposition of the inorganic material: with after-treatment of the deposited inorganic material

Family

Application60/977,685Us provisional application · filed 5 Oct 2007

Application12/245,978Parent of this continuation-in-part · filed 6 Oct 2008

Application61/264,967Us provisional application · filed 30 Nov 2009

Application12/954,800Parent of this continuation-in-part · filed 26 Nov 2010

Application61/578,321Us provisional application · filed 21 Dec 2011

US 2013/0122401 A1Pre-grant publication · published 16 May 2013

US 8,889,257 B2Parent of this continuation-in-part

US 8,906,501 B2Parent of this continuation-in-part

US 2009/0092834 A1Published application

US 2011/0091723 A1Published application

US 10,651,478 B2This patent

From the US filing history. Foreign family members aren’t listed.

Electrodes having Pt nanoparticles on RuO2 nanoskins

Life of this patent

Electrodes having Pt nanoparticles on RuO2 nanoskins

Life of this patent

Abstract

Claims20