公开(公告)号：EP3971139A1

公开(公告)日：2022-03-23

申请号：EP20197533.1

申请日：2020-09-22

申请人： Evonik Operations GmbH

发明人： Vieth, Sebastian ,  Müller, Sven ,  Panz, Christian, Dr. ,  Takata, Ryo ,  Schmidt, Franz, Dr.

IPC分类号： C01F7/04 ,  H01M4/485 ,  H01M4/62

摘要： The invention relates to a process for producing alpha lithium aluminate comprising the following steps: 1) preparing an aqueous dispersion comprising a fumed alumina, a lithium oxide precursor compound soluble in water and an alkali metal and/or an ammonium carbonate; 2) Spray drying of the dispersion prepared in step 1) to obtain a dried powder; 3) Calcining the dried powder obtained in step 2) at a temperature of from 450°C to 750°C. Lithium aluminate obtainable by this process can be used in lithium ion batteries.