Ou Skeleton Technologies Group

Foc Frankenburg Oil Company Est.

Skeleton Technologies Group Ou

Hlr Development Ou

Foc Frankenburg Oil Company

Mati Arulepp

Jaan Leis

Anti Perkson

Jie Zheng

Clarence L Wallace

Natalie Strizhakova

Yurii Maletin

Antonina Mironova

Sergey Gordeev Konstantinovich

Julia Kolotilova

Jan Cederstr&ouml;m

Sergey Kozachkov

Alexander Kravehik Efimovitj

Vasilii Sokolov Vasilevitj

Volodymyz Izotov

Valerii Danilin

Julia Kukushkina Aleksandrovna

Sergey Podmogilny

Sebastian Pohlmann

Helle Kuura

Marko Lätt

Kusta Rumma

Vello Madiberk

Taavi Madiberk

Priit Pihlakas

Ann Laheäär

The present invention is related to ultracapacitors (or supercapacitors) and to the carbon electrode materials for ultracapacitors. A ultradocapacitor according to the invention comprises at least one pair of oppositely charged microporous carbon electrodes composed of an electrochemically active carbon material wherein an active carbon surface is modified with plurality of atoms or functional groups with a free electron pair covalently bound to hexagonal carbon, and an electrolyte containing ions forming an electrical double layer on the surface of electrically charged carbon electrode and a component changing a state of charge during recharging of the ultracapacitor. The carbon is preferably CDC (carbon derived carbon) activated by high temperature (600-1000&#xb0; C.) chlorine treatment.

Carbon electrode materials for pseudocapacitors and a pseudocapacitor

The present invention relates to an electric double-layer capacitor and its manufacturing method. The ultracapacitor comprises a cylindrical housing having a bottom at one end and the housing is closed by an end cap integrated with first current terminal. From the bottom of the housing protrudes a terminal end of the second current terminal. Unlike to the previously known solutions the current terminals are arranged into the ultracapacitor, and spot welded to the electrode terminal to decrease internal resistance and to reach optimal packing density.

Integrated carbon/carbon ultracapacitor of high power density and battery composed from said capacitors

The present invention concerns a method of manufacture of the homodispersed composite of the synthetic carbon material derived from carbide and silicon where the powder of the carbon material is first dispersed mechanically with the powder of silicon to homodispersed mixture, then the homodispersed mixture of the carbon material and silicon is sintered in an inert environment at a temperature between 1200 to 1500&#xb0; C. to synthetic homodispersed composite of the silicon carbide and silicon. The homodispersed composite of the silicon carbide and silicon is heated in an inert environment at a temperature between 800 to 1100&#xb0; C. and then the homodispersed composite of the silicon carbide and silicon is chlorinated at a temperature from 800 to 100&#xb0; C.

Method of manufacture of homodispersed silicon carbide-derived carbon composites

This invention provides a method of manufacture of the electrochemical system of the electric double layer prismatic capacitor from electrically connected in parallel of semi-wound packages of micro/mesoporous carbon composite electrode pairs separated by porous cage. According to the method the pre-made carbon film will be covered with a layer of aluminum foil layer using a vacuum deposition method thus forming a current collector of an electrochemical system. Subsequently the pairs of electrodes are formed from a carbon composite electrode which are wounded or flipped to flat packages so that the ends of current collectors protruding from folded packages are joined together in parallel and thereafter the ends of current collectors are connected correspondingly to the positive and negative current terminal of the electric double layer capacitor.

Super capacitor of high specific capacity and energy density and the structure of said super capacitor

The present invention relates to the method of increasing the working voltage of electrical double layer capacitor with enhanced working voltage, which has electrodes fabricated from porous carbon powder in which the pore sizes and the specific surface are created by extracting the non-carbon atoms from the carbon-rich organic or mineral compounds. The method is performed by step-by-step treatment of supercapacitor with the conditioning voltage (Uc), which is increased gradually up to the working voltage (Uw) by the voltage step (DUc) which is less or equal to 0.2V.

Electrical double layer capacitor with enhanced working voltage

A method for making the microporous carbon with modified pore size distribution and advanced sorption behavior. The carbon is derived from metal or metalloid carbides. The method employs the use of oxidant in reaction medium that during the carbide conversion into carbon widens small micropores, which otherwise would be hardly accessed by sorbing molecules or ions in practical applications. The microporous carbon obtained is free of impurities and possesses extremely narrow pore size distribution.

Method of making the porous carbon material of different pore sizes and porous carbon materials produced by the method

An electric double layer capacitor including at least one pair of polarizable electrodes connected to current collectors, a separator made of ion-permeable but electron-insulating material interposed between the electrodes in each pair of electrodes, and a liquid electrolyte. According to the invention the electrodes include a layer of carbon particles having a narrow distribution of nanopores therein, the pore sizes of the nanopores being adapted to fit the ion sizes of the electrolyte. The invention also relates to a method of manufacturing such a supercapacitor.

Supercapacitor and a method of manufacturing such a supercapacitor

Growing community of inventors

Tartu, Estonia

Mati Arulepp