PROCESS FOR PRODUCING ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION CELL
摘要
The present invention relates to a method for preparing a lithium vanadium phosphate material comprising mixing water, lithium dihydrogen phosphate, V2O3 and a source of carbon to produce a first slurry; wet blending the first slurry; spray drying the wet blended slurry to form a precursor composition; milling the precursor composition to obtain a milled precursor composition; compacting the milled precursor to obtain a compacted precursor; pre-baking the compacted precursor composition to obtain a precursor composition with low moisture content; and calcining the precursor composition with low moisture content at a time and temperature sufficient to produce a lithium vanadium phosphate. The lithium vanadium phosphate so produced can optionally be further milled to obtain the desired particle size. The electrochemically active lithium vanadium phosphate so produced is useful in making electrodes and batteries and more specifically is useful in producing cathode materials for electrochemical cells.
申请公布号
WO2009076153(A1)
申请公布日期
2009.06.18
申请号
WO2008US85486
申请日期
2008.12.04
申请人
VALENCE TECHNOLOGY, INC.;SAIDI, M., YAZID
发明人
SAIDI, M., YAZID;MOSHAGE, RALPH;MEYER, ERIC;ZHANG, QIUHUA;HOGE, SCOTT;HARTSOUGH, DAN