公开(公告)号：US20130071749A1

公开(公告)日：2013-03-21

申请号：US13613245

申请日：2012-09-13

申请人： Yuya MUKAINAKANO ,  Rikitaro Ishii ,  Ryuji Shiozaki

发明人： Yuya MUKAINAKANO ,  Rikitaro Ishii ,  Ryuji Shiozaki

IPC分类号： H01M4/58 ,  H01M4/583

CPC分类号： H01M4/136 ,  C01B25/455 ,  C01P2002/72 ,  H01M4/582 ,  H01M4/5825 ,  H01M4/625

摘要： There is provided a positive electrode active material production method, a positive electrode, and a storage device. A production method of a positive electrode active material having a LiVPO4F-type crystal structure and containing carbon, includes: a step of synthesizing a precursor that has VPO4 containing carbon, from a starting material in the form of vanadium pentoxide and a phosphate compound, and from a carbon material as an additive; and a step of synthesizing LiVPO4F containing carbon, from the precursor and LiF. The carbon material as an additive is conductive carbon black having a specific surface area of 700 to 1500 m2/g, and in the step of synthesizing the precursor, an addition amount of the conductive carbon black is less than 2 moles per mole of vanadium pentoxide.

摘要翻译： 提供正极活性物质的制造方法，正极和存储装置。 具有LiVPO 4 F型结晶结构并含有碳的正极活性物质的制造方法包括：从五氧化二钒和磷酸盐化合物的原料合成含有含有VPO 4的前体的工序，以及 从碳材料作为添加剂; 以及从前体和LiF合成含有碳的LiVPO 4 F的工序。 作为添加剂的碳材料是比表面积为700〜1500m 2 / g的导电性炭黑，在合成前体的步骤中，每摩尔五氧化二钒的导电性炭黑的添加量少于2摩尔 。