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Title: Process to make core-shell structured nanoparticles

Patent ·
OSTI ID:1117631

Disclosed is a process for making a composite material that contains core-shell structured nanoparticles. The process includes providing a precursor in the form of a powder a liquid and/or a vapor of a liquid that contains a core material and a shell material, and suspending the precursor in an aerosol gas to produce an aerosol containing the precursor. In addition, the process includes providing a plasma that has a hot zone and passing the aerosol through the hot zone of the plasma. As the aerosol passes through the hot zone of the plasma, at least part of the core material and at least part of the shell material in the aerosol is vaporized. Vapor that contains the core material and the shell material that has been vaporized is removed from the hot zone of the plasma and allowed to condense into core-shell structured nanoparticles.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
Assignee:
Toyota Motor Engineering & Manufacturing North America, Inc. (Erlanger, KY); STC.UNM (Albuquerque, NM)
Patent Number(s):
8,623,470
Application Number:
12/143,398
OSTI ID:
1117631
Resource Relation:
Patent File Date: 2008 Jun 20
Country of Publication:
United States
Language:
English

References (18)

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Coated particles of inorganic or metallic materials and processes of producing the same patent February 1996
Carbon nanoencapsulates patent August 1996
Method and apparatus for making carbon-encapsulated ultrafine metal particles patent January 1997
Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide patent July 1998
Process for forming nanoparticles patent July 1998
Methods and apparati for producing fullerenes patent March 1999
Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide and the nanoencapsulates and nanotubes formed thereby patent October 1999
Plasma generation of supported metal catalysts patent November 1999
Process for producing oxide coated fine metal particles patent June 2003
Method for producing metallic nanoparticles patent February 2004
Method for obtaining nanoparticles patent May 2007
Method for producing metal oxide nanoparticles patent-application January 2004
Large scale continuous synthesis of carbon-encapsulated magnetic nanoparticles journal March 2007
Synthesis and electrochemistry properties of Sn–Sb ultrafine particles as anode of lithium-ion batteries journal July 2007
Direct observation of chemical reactions in silica-coated gold and silver nanoparticles journal January 1997
Sn-Carbon Core-Shell Powder for Anode in Lithium Secondary Batteries journal January 2005

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