Continuous hydrothermal synthetic method for lithium ion cell nano anode material

Abstract

The invention discloses a continual hydrothermal synthesizing method of lithium ion battery nanometer anode, which comprises the following steps: adopting continual hyper (sub) clinical hydrothermal synthetic technique to make nanometer graded LiFePO4 particle through hypercritical flow transfer mass and crystallizing elementary; adding conductive material to make electrode material; spraying the product liquid into low-pressure flashing room with cyclone separator directly; gasifying water in the flashing room into steam; draining out from the top of cyclone separator; sedimenting solid particle on the bottom of flashing room; collecting dry powder as product.

Description

technical field

[0001] The invention relates to a continuous hydrothermal synthesis method of nanometer cathode materials for lithium-ion batteries, which mainly adopts super (sub) critical hydrothermal crystallization synthesis technology to obtain lithium ferrous phosphate (LiFePO 4 ) and its modified lithium-ion battery cathode material nanoparticles. The invention belongs to the technical field of energy material preparation. Background technique

[0002] Since the commercialization of lithium-ion batteries, cathode materials have always been a research hotspot in the field of batteries. Among them, LiCoO, the cathode material for lithium-ion batteries that has been industrialized 2 It pollutes the environment and is expensive, which greatly limits its future development. Lithium iron phosphate (LiFePO) with olivine structure 4 ) as a new type of lithium-ion battery cathode material has the advantages of wide material sources, low price, high theoretical specific cap...