Chemat Technology, Inc.

California Institute of Technology

Yuhong Huang

Haixing Zheng

Ichiro Nishimura

Jiankai Liu

Qiang Wei

Andrew Kindler

Oiang Wei

Sri R Narayanan

Chung-tse Chu

A method and system for storing and generating hydrogen. The method comprises generating hydrogen and heat from the reaction of a metal or metal compound with water. The heat generated from this reaction may then be converted to other forms of energy such as by passing the heat through a thermal electric device to recover electrical energy for storage in a battery. In an alternative and preferred embodiment, the heat is used to drive additional reactions for generating more hydrogen and is preferably used to drive an endothermic dehydrogenation reaction resulting in increased hydrogen generation and consumption of the heat.

Method and system for storing and generating hydrogen

A method including forming a first coating layer derived from an alkoxide on a substrate having a dimension suitable for an implant and forming a second coating layer on the first coating layer that promotes osseointegration. An apparatus comprising a substrate having a dimension suitable as a medical or dental implant and a coating on a surface of a first coating layer derived from an alkoxide and a second coating layer that promotes osseointegration.

Coated implants and methods of coating

A method including synthesizing polymeric precursors via organic acid modification; fabricating a fibrous material of the polymeric precursors; and fabricating a body of the fibrous material. One body has dimensions suitable as an electrode component of an electrical storage device.

Method of forming fibrous materials and articles therefrom

Insertion of light elements such as H,C, or N in the R Fe (R&equals;rare earth metal) series has been found to modify the magnetic properties of these compounds, which thus become prospective candidates for high performance permanent magnets. The most spectacular changes are increases of the Curie temperature, T , of the magnetization, M , and of coercivity, H , upon interstitial insertion. A preliminary product having a component R&mdash;Fe&mdash;C,N phase is produced by a chemical route. Rare earth metal and iron amides are synthesized followed by pyrolysis and sintering in an inert or reduced atmosphere, as a result of which, the R&mdash;Fe&mdash;C,N phases are formed. Fabrication of sintered rare earth iron nitride and carbonitride bulk magnet is impossible via conventional process due to the limitation of nitridation method.

Method for preparing high cure temperature rare earth iron compound magnetic material

Metal nitride, carbonitride, and oxycarbonitride powder with high surface area (up to 150 m,/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&deg; 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.

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

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West Hills, CA, United States of America

Yuhong Huang