US 2002/0001751 A1 · Electrode composition comprising doped tungsten oxides, method of preparation thereof and electrochemical cell comprising same

Abstract

Provided is a novel electrode composition suitable for use in an electrochemical cell. The composition includes a polymeric binder material and a doped tungsten (IV) oxide active material. The active material includes a tungsten (IV) oxide host material and a metal dopant in the host material effective to increase the charge-discharge capacity per unit weight of the active material when used in an electrochemical cell. Also provided is a method for forming the electrode composition and an electrochemical cell comprising the composition. The invention results in an electrochemical cell having improved charge-discharge capacity per unit weight of the electrode active material, and is additionally chemically and electrochemically stable.

Claims31

Dependent claims

An electrode composition suitable for use in an electrochemical cell, comprising a polymeric binder material and a doped tungsten (IV) oxide active material, the active material comprising a tungsten (IV) oxide host material and a metal dopant in the host material effective to increase the charge-discharge capacity per unit weight of the active material when used in an electrochemical cell.

Dependencies are inferred from the claim text.

Facts

Application

09/916,347Filed 30 Jul 2001

Priority

15 Sep 1999

Published

3 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01M 4/485
Of inorganic oxides or hydroxides: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/131
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
H01M 4/1391
Processes of manufacture: of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 6/16
Cells with non-aqueous electrolyte: with organic electrolyte

Electrode composition comprising doped tungsten oxides, method of preparation thereof and electrochemical cell comprising same

Life of this patent

Electrode composition comprising doped tungsten oxides, method of preparation thereof and electrochemical cell comprising same

Life of this patent

Abstract

Claims31