Abstract:
The present invention includes an apparatus and method of making and using a composition that includes the replacement of electrochemically inactive additives with a conductive and electrochemically active polymer that is attached so as to make an electrical contract to the redox couples of the electrochemically active oxide particles into/from which Lithium is reversibly inserted/extracted in a battery discharge/charge cycle.
Abstract:
The present invention relates to a novel nanostructured porous material, method for the manufacture thereof and new uses. The material according to the invention is formed by a matrix comprising carbon particles having a high aspect ratio and at least one inherently conductive polymer bound together to form a self-supporting continuous network. In the method according to the invention an aqueous suspension of carbon particles having a high aspect ratio and monomers of at least one inherently conductive polymer is provided, the monomers are polymerized in the presence of the carbon particles, and the aqueous suspension is freeze-died to provide the nanostructured porous material. According to a preferred embodiment, electrically conductive carbon nanotubes are used. The invention provides a convenient way a manufacturing very low-density materials having unique properties.
Abstract:
The invention provides lithium and lithium ion batteries in which the active material of one of the electrodes includes a substantial quantity of a fluoropolymer or fluoro-oligomer material having carbon-fluorine bonds. The fluoropolymer or fluoro- oligomer active material may be mixed with a substantial quantity of electrically conductive material, and may also be mixed with subfluorinated carbonaceous materials. The batteries of the invention are useful for elevated temperature applications. The invention also provides methods for electrochemical generation of energy which employ the batteries of the invention at elevated temperatures.
Abstract:
This invention concerns a novel method for surface derivatization of electrode materials for Li-ion batteries. The derivatization is based on adsorption of a composite assembly consisting of amphiphilic redox active molecule attached to single walled carbon nanotube (SWCNT). Its role consists in the enhancement of electronic conductivity of electrode materials, such as phosphate olivines, without requesting any significant increase of the electrode volume and mass. The SWCNT is linked to the redox molecule via non-covalent or covalent interaction with the hydrophobic part of the molecule or electrostatic interaction. The hydrophilic part of the molecule serves as the anchoring site for surface modification of the electrode active material. The redox potential of the molecule is close to the redox potential of the electrode active material. The adsorbed assembly of redox-molecule & SWCNT thus improves the charge transfer from a current collector to the electrode active material.
Abstract:
A rechargeable cell for operation at temperatures above from -40 °C to +120 °C which has a positive electrode comprising sulfur and/or organic and/or non-organic compounds (including polymer compounds) of sulfur as an electrode active material, and a negative electrode made of metal lithium or lithium alloys, and an electrolyte comprising a solution of one or more salts in one or more solvents.
Abstract:
There is provided a composition comprising a first compound chosen from compounds of formulas (I) and (III) and a second compound chosen from compounds of formulas (II) and (IV): Various chemical entities can be used for R 1 to R 4 , A, M, and Z. This composition can be particularly useful as a redox couple.
Abstract translation:提供了包含选自式(I)和(III)的化合物的第一化合物和选自式(II)和(IV)的化合物)的第二化合物的组合物:各种化学实体可用于R 1 R 4,A,M和Z。该组合物可特别用作氧化还原对。