Loading patent…
AssigneeChemat Technology, Inc.
InventorsYuhong Huang, Oiang Wei, Chung-tse Chu, Haixing Zheng
Estimating the term…
Metal nitride, carbonitride, and oxycarbonitride powder with high surface area (up to 150 m2/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° 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 porous separator layer between two electrodes/electrolyte and forming a unit cell.
A method of fabricating high specific surface area electrode, comprising the steps of:
A high specific surface area electrode comprising a substrate and a composite layer fabricated from a porous powder having metal occupied in a first (A) lattice and heteroatom occupied in a second (B) lattice, wherein the metal is selected from the Groups IV, V, and VI of the Periodic Table and the heteroatom is selected from the group of Oxygen (O), Nitrogen (N), Carbon (C) and Boron (B), and wherein the powder is fabricated by utilizing a bulky organic ligand as a template for controlling the pore size and pore size distribution of the powder.
A method of fabricating high specific surface area electrode, comprising the steps of:
A method of fabricating high specific surface area electrode, comprising the steps of:
A method of fabricating high specific surface area electrode, comprising the steps of:
A method of fabricating high specific surface area electrode, comprising the steps of:
A high specific surface area electrode comprising a substrate and a composite layer fabricated from a porous powder having metal occupied in a first (A) lattice and heteroatom occupied in a second (B) lattice, wherein the metal is selected from the Groups IV, V, and VI of the Periodic Table and the heteroatom is selected from the group of Oxygen (O), Nitrogen (N), Carbon (C) and Boron (B), and wherein the porous power is prepared by synthesizing metal-amide.
A high specific surface area electrode comprising a substrate and a composite layer fabricated from a porous metal oxycarbonitride powder having metal occupied in a first (A) lattice and heteroatom occupied in a second (B) lattice, wherein the metal is selected from the Groups IV, V, and VI of the Periodic Table and the heteroatom is selected from the group of Oxygen (0), Nitrogen (N), Carbon (C) and Boron (B).
A high specific surface area electrode comprising a substrate and a composite layer fabricated from a porous metal alkylamides powder synthesized by exchange reaction of metal chloride with lithium alkylamides and having metal occupied in a first (A) lattice and heteroatom occupied in a second (B) lattice, wherein the metal is selected from the Groups IV, V, and VI of the Periodic Table and the heteroatom is selected from the group of Oxygen (O), Nitrogen (N), Carbon (C) and Boron (B).
A high specific surface area electrode comprising a substrate and a composite layer fabricated from a porous powder having metal occupied in a first (A) lattice and heteroatom occupied in a second (B) lattice, wherein the metal is selected from the Groups IV, V, and VI of the Periodic Table and the heteroatom is selected from the group of Oxygen (O), Nitrogen (N), Carbon (C) and Boron (B), and wherein the composite layer is formed on the substrate by pressing a mixture of the porous powder and a binder to the substrate.
Dependencies are inferred from the claim text.