CAS: 5785-44-4; Calcium Citrate Tetrahydrate

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CAS号68-04-2 柠檬酸钠

专利信息

专利号:US-7338647-B2
优先权日:2004-05-20
标 题:Synthesis of cathode active materials
发明人：HUANG BIYING; SWOYER JEFFREY; SAIDI M YAZID; HUANG HAITAO
权利人:VALENCE TECHNOLOGY INC
摘要:The present invention relates to a method for preparing an electroactive metal polyanion or a mixed metal polyanion comprising forming a slurry comprising a polymeric material, a solvent, a polyanion source or alkali metal polyanion source and at least one metal ion source; heating said slurry at a temperature and for a time sufficient to remove the solvent and form an essentially dried mixture; and heating said mixture at a temperature and for a time sufficient to produce an electroactive metal polyanion or electroactive mixed metal polyanion. In an alternative embodiment the present invention relates to a method for preparing a metal polyanion or a mixed metal polyanion which comprises mixing a polymeric material with a polyanion source or alternatively an alkali metal polyanion source and a source of at least one metal ion to produce a fine mixture and heating the mixture to a temperature higher than the melting point of the polymeric material, milling the resulting material and then heating the milled material. It is another object of the invention to provide electrochemically active materials produced by said methods. The electrochemically active materials so produced are useful in making electrodes and batteries.

专利号:US-7060238-B2
优先权日:2004-03-04
标题 :Synthesis of metal phosphates
发明人：SAIDI M YAZID; HUANG HAITAO
权利人:VALENCE TECHNOLOGY INC
摘要:The present invention relates to a method for preparing a metal phosphate which comprises milling in a carbonaceous vessel a lithium source, a phosphate source, such as LiH 2 PO 4 , and a metal oxide containing a metal ion wherein the metal ion is capable of being reduced, to produced a milled mixture and heating the milled mixture in an inert atmosphere at a temperature and for a time sufficient to form a metal phosphate wherein the metal ion of the metal oxide is reduced in oxidation state without the direct addition of a reducing agent to the starting materials. In another embodiment the present invention relates to a method for preparing a mixed metal phosphate which comprises milling a lithium source and a phosphate source, such as LiH 2 PO 4 , a metal oxide and another metal compound wherein at least one of the metal compounds contains a metal ion capable of being reduced to produce a milled mixture and heating the resulting milled mixture in an inert atmosphere at a temperature and for a time sufficient to form a mixed metal phosphate, wherein the oxidation state of at least one of the metal ions is reduced in oxidation state without the direct addition of a reducing agent to the reactants. It is another object of the invention to provide electrochemically active materials produced by said methods.

专利号:US-2008099720-A1
优先权日:2004-05-20
标题:Synthesis of cathode active materials

专利号:CN-101427401-B
优先权日:2004-05-20
标 题:Synthesis of cathode active Material

专利号:US-2005260494-A1
优先权日:2004-05-20
标题:Synthesis of cathode active materials

专利号:US-2005196334-A1
优先权日:2004-03-04
标 题 :Synthesis of metal phosphates