Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Subnanometer catalytic clusters for water splitting, method for splitting water using subnanometer catalyst clusters

a technology of catalytic clusters and subnanometers, which is applied in the field of electrochemical reaction facilitation methods, can solve the problems of relatively low cost, achieve the effects of enhancing catalyst activity, reducing cost, and eliminating support structure defects

Inactive Publication Date: 2014-10-16
UCHICAGO ARGONNE LLC
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a new catalyst system for water decomposition that uses small clusters of atoms containing a few or no catalytic moieties. These catalysts are supported on a conductive surface and have a high surface area to atom ratio, resulting in highly efficient conversion of water molecules. The invention also provides a method for oxidizing or reducing molecules using these catalysts, and a self-healing catalyst system that can passivate defects and enhance catalytic activity. Overall, the invention offers a cost-effective and efficient way to convert water molecules using precious metal catalysts.

Problems solved by technology

This results in a cost that is relatively low compared to methods using precious metals.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Subnanometer catalytic clusters for water splitting, method for splitting water using subnanometer catalyst clusters
  • Subnanometer catalytic clusters for water splitting, method for splitting water using subnanometer catalyst clusters
  • Subnanometer catalytic clusters for water splitting, method for splitting water using subnanometer catalyst clusters

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0057]OER activity was measured for three Pd clusters (Pd4, Pd6 and Pd17). The activity was measured on an ultrananocrystalline diamond film electrode at pH 13.6 (1 M NaOH). FIG. 1a shows linear sweep voltammetry (LSV) curves of Pd4 (solid line), Pd6 (cross-hatched line) and Pd17 (dashed line) clusters after 500 second cleaning / preconditioning by chronoamperometry at about 1.7 V. A background curve (dotted line) for a UNCD coated electrode without deposited Pd clusters is also shown. The blank UNCD used was of the same dimensions and identical batch as the cluster-covered samples.

[0058]The graphs in FIGS. 1A and 1B depict large increases in anodic current between Pd6 or Pd17 clusters and the UNCD support. In this example, about 10 percent of the total surface area of the electrode was coated with Pd clusters, moreover within this area as low as 0.1 atomic monolayer equivalent of Pd metal (1.5×1014 atoms / cm2) was deposited. Generally, between about 1 and 25 percent of the surface are...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Fractionaaaaaaaaaa
Login to View More

Abstract

The invention provides a catalytic electrode for converting molecules, the electrode comprising a predetermined number of single catalytic sites supported on a substrate. Also provided is a method for oxidizing water comprising contacting the water with size selected catalyst clusters. The invention also provides a method for reducing an oxidized moiety, the method comprising contacting the moiety with size selected catalyst clusters at a predetermined voltage potential.

Description

CONTRACTUAL ORIGIN OF THE INVENTION[0001]The United States Government has rights in this invention pursuant to Contract No DE-AC02-06CH11357 between the United States Government and UChicago Argonne, LLC representing Argonne National Laboratory.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to an electrode and a method for facilitating electrochemical reactions, and more specifically this invention relates to an electrode and a method for utilizing size selected catalyst clusters to facilitate oxidizing and reducing reactions.[0004]2. Background of the Invention[0005]Efficient methods for splitting water are a key scientific challenge for meeting the world's fuels needs over the next century. Water oxidation (i.e., water splitting) is a key catalytic step for electrical fuels generation. It consists of two reactions: the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER).[0006]Oxygen evolution reactions (see Equations 1 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25B11/02C25B11/04C25B3/04C25B1/04C25B3/25
CPCC25B11/02C25B1/04C25B3/04C25B11/0473C25B11/0405Y02E60/36C25B3/25C25B11/059C25B11/069C25B11/051C25B11/077C25B11/081C25B11/091
Inventor VAJDA, STEFANCURTISS, LARRY A.PELLIN, MICHAEL J.
Owner UCHICAGO ARGONNE LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com