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 preferred manufacturing process involves the 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 Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1082962
- Patent Number(s):
- 8404613
- Application Number:
- 12/709,836
- Assignee:
- Brookhaven Science Associates, LLC (Upton, NY)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
- DOE Contract Number:
- AC02-98CH10886
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Adzic, Radoslav, and Harris, Alexander. Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures. United States: N. p., 2013.
Web.
Adzic, Radoslav, & Harris, Alexander. Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures. United States.
Adzic, Radoslav, and Harris, Alexander. Tue .
"Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures". United States. https://www.osti.gov/servlets/purl/1082962.
@article{osti_1082962,
title = {Platinum-based electrocatalysts synthesized by depositing contiguous adlayers on carbon nanostructures},
author = {Adzic, Radoslav 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 preferred manufacturing process involves the 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 = {Tue Mar 26 00:00:00 EDT 2013},
month = {Tue Mar 26 00:00:00 EDT 2013}
}