公开(公告)号：US20150333329A1

公开(公告)日：2015-11-19

申请号：US14429062

申请日：2014-01-09

Applicant: LG Chem, Ltd.

Inventor： In Kook Jun ,  Seung Beom Cho ,  Myoung Hwan Oh

IPC: H01M4/58 ,  C01B25/45 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/587

CPC classification number: H01M4/5825 ,  B82Y30/00 ,  C01B25/45 ,  C01G49/009 ,  C01P2002/30 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/587 ,  H01M4/625 ,  H01M4/626 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/30 ,  Y02P20/544

Abstract: The present invention relates to a method for preparing a lithium iron phosphate nanopowder, including the steps of (a) preparing a mixture solution by adding a lithium precursor, an iron precursor and a phosphorus precursor in a reaction solvent, and (b) putting the mixture solution into a reactor and heating to prepare the lithium iron phosphate nanopowder under pressure conditions of 10 to 100 bar, and a lithium iron phosphate nanopowder prepared by the method. When compared to a common hydrothermal synthesis method and a supercritical hydrothermal synthesis method, a reaction may be performed under a relatively lower pressure. When compared to a common glycothermal synthesis method, a lithium iron phosphate nanopowder having effectively controlled particle size and particle size distribution may be easily prepared.

Abstract translation: 本发明涉及一种制备磷酸铁锂纳米粉末的方法，包括以下步骤：（a）通过在反应溶剂中加入锂前体，铁前体和磷前体制备混合溶液，和（b）将 混合溶液加入到反应器中并加热以在10至100巴的压力条件下制备磷酸铁锂纳米粉末，并通过该方法制备磷酸铁锂纳米粉末。 当与常用的水热合成法和超临界水热合成法相比时，可以在相对较低的压力下进行反应。 当与普通的糖热合成方法相比时，可以容易地制备具有有效控制粒度和粒度分布的磷酸铁锂纳米粉末。