Patent ID: 7491378
Filing Date: 2009-02-17
Classification: B82Y,C01G,C01P,H01M,Y02E,Y02P

Abstract:
1. A process for preparing a powder material comprised mainly of a compound which electrochemically intercalates and deintercalates a lithium ion and contains at least an oxygen element, a sulfur element and at least one transition metal element, the process comprising at least one step selected from a group consisting of: (I) a step of heating at least one compound (a) selected from a group consisting of carbonates, organic carboxylates, nitrates, hydroxides and oxides of transition metals, and a sulfur compound (b) which forms hydrogen sulfide or sulfur, in a closed vessel; (II) a step of heating at least one compound (c) selected from a group consisting of sulfides, thiocarbonates, thiosulfates, thiocyanates, thioglicolates and thiourea complexes of transition metals and at least one compound (d) selected from a group consisting of carbonates, carbonic acid, organic carboxylates, organic carboxylic acids, nitrates, nitric acid, hydroxides and oxides, which contains no transition metal element, in a closed vessel; and (III) a step of heating at least one compound (a) selected from a group consisting of carbonates, organic carboxylates, nitrates, hydroxides and oxides of transition metals and at least one compound (c) selected from a group consisting of sulfides, thiocarbonates, thiosulfates, thiocyanates, thioglicolates and thiourea complexes of transition metals in a closed vessel.