Invention Grant
US09437866B2 Process for producing lithium vanadium phosphate-carbon composite
有权
生产锂钒磷酸盐 - 碳复合材料的方法
- Patent Title: Process for producing lithium vanadium phosphate-carbon composite
- Patent Title (中): 生产锂钒磷酸盐 - 碳复合材料的方法
-
Application No.: US13823612Application Date: 2011-09-22
-
Publication No.: US09437866B2Publication Date: 2016-09-06
- Inventor: Tsutomu Kikuchi , Kazuki Takimoto , Hideo Yanagita
- Applicant: Tsutomu Kikuchi , Kazuki Takimoto , Hideo Yanagita
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.,FUJI JUKOGYO KABUSHIKI KAISHA
- Current Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.,FUJI JUKOGYO KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2010-216038 20100927
- International Application: PCT/JP2011/071593 WO 20110922
- International Announcement: WO2012/043367 WO 20120405
- Main IPC: H01M4/1397
- IPC: H01M4/1397 ; H01M4/13 ; H01M4/58 ; C01B25/45 ; H01M4/04 ; H01M4/136 ; H01M10/0525 ; H01M4/62

Abstract:
A process for producing a lithium vanadium phosphate-carbon composite includes a first step that includes mixing a lithium source, a tetravalent or pentavalent vanadium compound, a phosphorus source, and a conductive carbon material source that produces carbon through pyrolysis, in an aqueous solvent to prepare a raw material mixture, a second step that includes heating the raw material mixture to effect a precipitation reaction to obtain a reaction mixture that includes a precipitate, a third step that includes subjecting the reaction mixture that includes the precipitate to wet grinding using a media mill to obtain a slurry that includes ground particles, a fourth step that includes spray-drying the slurry that includes the ground particles to obtain a reaction precursor, and a fifth step that includes calcining the reaction precursor at 600 to 1300° C. in an inert gas atmosphere or a reducing atmosphere. A lithium vanadium phosphate-carbon composite produced by the process may provide a lithium secondary battery with excellent battery performance (e.g., high discharge capacity) when used as a cathode active material.
Public/Granted literature
- US20130214462A1 PROCESS FOR PRODUCING LITHIUM VANADIUM PHOSPHATE-CARBON COMPOSITE Public/Granted day:2013-08-22
Information query