Treatment method of metal lithium phosphate material and metal lithium phosphate material prepared by same

• Main Authors: CHEN MING, JI YONG, XIAN XUEFENG, XIA DONGYAN
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the field of lithium ions and discloses a treatment method of a metal lithium phosphate material and the metal lithium phosphate material prepared by the same. The treatment method includes: performing heat treatment on the metal lithium phosphate material in weak oxidization atmosphere. By adopting the method to treat the metal lithium phosphate material, electrochemical performance like first discharge comparable capacity of the method can be deteriorated hardly, but specific surface area, saturated water absorbing capacity and water absorbing speed of the material can be lowered obviously. 本发明涉及锂离子电池领域，公开了种磷酸金属锂盐材料的处理方法及由该方法得到的磷酸金属锂盐材料。本发明的方法包括：将磷酸金属锂盐材料在弱氧化性气氛下进行热处理。采用本发明的方法处理磷酸金属锂盐材料，几乎不会恶化材料的首次放电克比容量等电化学性能，但会明显降低材料的比表面积、饱和吸水量和吸水速度。