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Title: Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures

Abstract

High-surface-area carbon nanostructures coated with a smooth and conformal submonolayer-to-multilayer thin metal films and their method of manufacture are described. The manufacturing process may involve initial oxidation of the carbon nanostructures followed by immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means and the nanostructures are exposed to a solution containing a salt of one or more noble metals which replace adsorbed non-noble surface metal atoms by galvanic displacement. Subsequent film growth may be performed via the initial quasi-underpotential deposition of a non-noble metal followed by immersion in a solution comprising a more noble metal. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.

Inventors:
;
Issue Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1222637
Patent Number(s):
9,150,968
Application Number:
13/775,674
Assignee:
Brookhaven Science Associates, LLC (Upton, NY)
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Feb 25
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Adzic, Radoslav R., and Harris, Alexander. Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures. United States: N. p., 2015. Web.
Adzic, Radoslav R., & Harris, Alexander. Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures. United States.
Adzic, Radoslav R., and Harris, Alexander. Tue . "Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures". United States. https://www.osti.gov/servlets/purl/1222637.
@article{osti_1222637,
title = {Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures},
author = {Adzic, Radoslav R. and Harris, Alexander},
abstractNote = {High-surface-area carbon nanostructures coated with a smooth and conformal submonolayer-to-multilayer thin metal films and their method of manufacture are described. The manufacturing process may involve initial oxidation of the carbon nanostructures followed by immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means and the nanostructures are exposed to a solution containing a salt of one or more noble metals which replace adsorbed non-noble surface metal atoms by galvanic displacement. Subsequent film growth may be performed via the initial quasi-underpotential deposition of a non-noble metal followed by immersion in a solution comprising a more noble metal. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {10}
}

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