Title:
LITHIUM IRON PHOSPHATE/CARBON COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/129883
Kind Code:
A1
Abstract:
A preparation method for a lithium iron phosphate/carbon composite material, comprising the following steps: 1) weighing iron powder, phosphoric acid, and an acidifying additive, and dispersing the same in deionized water; 2) heating to perform an acidification reflux reaction; 3) after the acidification reflux reaction ends, adding a lithium-containing compound and an organic carbon source to perform mixing and dispersion; 4) stirring and evaporation drying the mixture to obtain a lithium iron phosphate precursor which is composited by the organic carbon source; and 5) sintering the collected precursor, pulverizing and screening, and then obtaining the lithium iron phosphate/carbon composite material. Relative to the existing technology, said preparation method for the lithium iron phosphate/carbon composite material has the following advantages: 1) the raw materials have wide sources and are low cost; 2) the product has a good crystalline structure, few impurities, and even granularity, and has ideal electrochemical properties; 3) the preparation process is simple and practical, equipment running costs are low, and large scale industrial production is easily achieved.
Inventors:
CHEN LI PENG (CN)
WANG LONG (CN)
LIU NA (CN)
WANG LONG (CN)
LIU NA (CN)
Application Number:
PCT/CN2017/092314
Publication Date:
July 19, 2018
Filing Date:
July 09, 2017
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/58
Foreign References:
| CN1706057A | 2005-12-07 | |||
| CN101800315A | 2010-08-11 | |||
| CN103208614A | 2013-07-17 | |||
| CN101355158A | 2009-01-28 | |||
| CN1958440A | 2007-05-09 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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