skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electrodes synthesized from carbon nanostructures coated with a smooth and conformal metal adlayer

Patent ·
OSTI ID:1129188
;

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 a surface preparation process involving immersion in a solution with the desired pH to create negative surface dipoles. The nanostructures are subsequently immersed in an alkaline solution containing a suitable quantity of non-noble metal ions which adsorb at surface reaction sites. The metal ions are then reduced via chemical or electrical means. 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. The process can be controlled and repeated to obtain a desired film coverage. The resulting coated nanostructures may be used, for example, as high-performance electrodes in supercapacitors, batteries, or other electric storage devices.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-98CH10886
Assignee:
Brookhaven Science Associates, LLC (Upton, NY)
Patent Number(s):
8,699,207
Application Number:
12/603,216
OSTI ID:
1129188
Resource Relation:
Patent File Date: 2009 Oct 21
Country of Publication:
United States
Language:
English

References (41)

Electric double layer capacitor patent December 1985
Process for purifying, uncapping and chemically modifying carbon nanotubes patent December 1997
Supercapacitor using electrode of new material and method of manufacturing the same patent September 2002
Capacitors and supercapacitors containing modified carbon products patent February 2003
Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation patent December 2003
Supercapacitor and a method of manufacturing such a supercapacitor patent February 2004
Method of forming ruthenium thin film using plasma enhanced process patent May 2004
Methods of forming ruthenium film by changing process conditions during chemical vapor deposition and ruthenium films formed thereby patent June 2004
Modification of nanotubes oxidation with peroxygen compounds patent March 2005
Method of manufacturing inorganic nanotube patent February 2006
Supercapacitor having electrode material comprising single-wall carbon nanotubes and process for making the same patent June 2006
Asymmetric electrochemical supercapacitor and method of manufacture thereof patent April 2007
Polarizing electrode, manufacturing method thereof, and electric double-layer capacitor patent April 2007
Sharp end, multi-layer carbon nano-tube radial aggregate and method of manufacturing the aggregate patent August 2007
Electrode for energy storage devices and electrochemical supercapacitor based on said electrode patent June 2008
Ruthenium containing layer deposition method patent October 2008
Electrode for electrochemical capacitor patent March 2009
Composite electrode comprising a carbon structure coated with a thin film of mixed metal oxides for electrochemical energy storage patent July 2011
Carbon nanohorn adsorbent and process for producing the same patent-application March 2004
Low platinum fuel cell catalysts and method for preparing the same patent-application May 2005
Wet electrolytic capacitor patent-application February 2006
Platinum- and platinum alloy-coated palladium and palladium alloy particles and uses thereof patent-application June 2006
Electrocatalyst for oxygen reduction with reduced platinum oxidation and dissolution rates patent-application November 2006
Carbon nanohorn producing device and carbon nanohorn producing method patent-application January 2007
Electrocatalysts having platinum monolayers on palladium, palladium alloy, and gold alloy nanoparticle cores, and uses thereof patent-application February 2007
Synthesis of Metal-Metal Oxide Catalysts and Electrocatalysts Using a Metal Cation Adsorption/Reduction and Adatom Replacement by More Noble Ones patent-application November 2007
Method of Forming a Reliable Electrochemical Capacitor patent-application November 2007
Nano-Composite Structures, Methods of Making, and Use Thereof patent-application October 2008
Nanostructured Material Loaded with Noble Metal Particles patent-application January 2011
Effect of surface modifications on the decoration of multi-walled carbon nanotubes with ruthenium nanoparticles journal July 2007
Study of the Electroless Deposition of Pd on Cu-Modified Graphite Electrodes by Metal Exchange Reaction journal May 2008
Nano-aggregates of single-walled graphitic carbon nano-horns journal August 1999
Ruthenium Oxide Nanotube Arrays Fabricated by Atomic Layer Deposition Using a Carbon Nanotube Template journal June 2003
Synthesis and Characterization of Electrochemically Prepared Ruthenium Oxide on Carbon Nanotube Film Substrate for Supercapacitor Applications journal January 2005
Electrochemical Characterization of Electrochemically Prepared Ruthenium Oxide/Carbon Nanotube Electrode for Supercapacitor Application journal January 2005
Nanotechnology: applications and potentials for heterogeneous catalysis journal November 2004
Metal monolayer deposition by replacement of metal adlayers on electrode surfaces journal March 2001
In Situ X-Ray Reflectivity and Voltammetry Study of Ru(0001) Surface Oxidation in Electrolyte Solutions journal April 2001
Nanowindow-Regulated Specific Capacitance of Supercapacitor Electrodes of Single-Wall Carbon Nanohorns journal January 2007
Hybridization of GaAs, AlAs and (Al, Ga)As with carbon nanotubes by molecular beam epitaxy journal March 2006
Lattice Fringe Signatures of Epitaxy on Nanotubes journal July 2006

Similar Records

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY