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Title: Methods for and products of processing nanostructure nitride, carbonitride and oxycarbonitride electrode power materials by utilizing sol gel technology for supercapacitor applications

Metal nitride, carbonitride, and oxycarbonitride powder with high surface area (up to 150 m.sup.2 /g) is prepared by using sol-gel process. The metal organic precursor, alkoxides or amides, is synthesized firstly. The metal organic precursor is modified by using unhydrolyzable organic ligands or templates. A wet gel is formed then by hydrolysis and condensation process. The solvent in the wet gel is then be removed supercritically to form porous amorphous hydroxide. This porous hydroxide materials is sintered to 725.degree. C. under the ammonia flow and porous nitride powder is formed. The other way to obtain high surface area nitride, carbonitride, and oxycarbonitride powder is to pyrolyze polymerized templated metal amides aerogel in an inert atmosphere. The electrochemical capacitors are prepared by using sol-gel prepared nitride, carbonitride, and oxycarbonitride powder. Two methods are used to assemble the capacitors. Electrode is formed either by pressing the mixture of nitride powder and binder to a foil, or by depositing electrode coating onto metal current collector. The binder or coating is converted into a continuous network of electrode material after thermal treatment to provide enhanced energy and power density. Liquid electrolyte is soaked into porous electrode. The electrochemical capacitor assembly further has a porousmore » separator layer between two electrodes/electrolyte and forming a unit cell.« less
Inventors:
 [1];  [1];  [2];  [3]
  1. (West Hills, CA)
  2. (Chatsworth, CA)
  3. (Oak Park, CA)
Issue Date:
OSTI Identifier:
873470
Assignee:
Chemat Technology, Inc. (Northridge, CA) OAK
Patent Number(s):
US 6168694
Contract Number:
FG03-93ER81570
Research Org:
Chemat Technology, Inc. (Northridge, CA)
Country of Publication:
United States
Language:
English
Subject:
methods; products; processing; nanostructure; nitride; carbonitride; oxycarbonitride; electrode; power; materials; utilizing; sol; technology; supercapacitor; applications; metal; powder; surface; 150; prepared; sol-gel; process; organic; precursor; alkoxides; amides; synthesized; firstly; modified; unhydrolyzable; ligands; templates; wet; formed; hydrolysis; condensation; solvent; removed; supercritically; form; porous; amorphous; hydroxide; sintered; 725; degree; ammonia; flow; obtain; pyrolyze; polymerized; templated; aerogel; inert; atmosphere; electrochemical; capacitors; assemble; pressing; mixture; binder; foil; depositing; coating; current; collector; converted; continuous; network; material; thermal; treatment; provide; enhanced; energy; density; liquid; electrolyte; soaked; capacitor; assembly; separator; layer; electrodes; forming; unit; cell; metal organic; sol-gel process; porous separator; oxide materials; nitride powder; current collector; electrode material; inert atmosphere; porous electrode; power density; oxide material; liquid electrolyte; thermal treatment; unit cell; metal nitride; provide enhanced; organic ligand; metal amide; electrochemical capacitors; separator layer; metal current; organic precursor; form porous; electrochemical capacitor; nitride electrode; utilizing sol; capacitor applications; /204/106/148/205/361/423/501/