Title:
METHOD FOR RECOVERING LITHIUM, THROUGH ELECTROCHEMICAL METHOD, FROM COAL FLY ASH OR WASTE WATER GENERATED IN PROCESS FOR PRODUCING ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/010947
Kind Code:
A1
Abstract:
The present invention provides a method for recovering lithium, through an electrochemical method, from coal fly ash or waste water generated in a process for producing an active material for a lithium secondary battery, comprising the steps of: (S10) preparing coal fly ash leachate or waste water generated in a process for producing an active material for a lithium secondary battery; (S20) injecting an adsorbent into the coal fly ash leachate or the waste water generated in a process for producing an active material for a lithium secondary battery to prepare a lithium manganese oxide; (S30) injecting the lithium manganese oxide, a conducting material, a binder, and a solvent into a stirrer and stirring the same to prepare a slurry; (S40) coating the prepared slurry on an aluminum or copper foil and drying the coated slurry; electrolytic bath comprising an electrode plate and lithium metal, and ascertaining a reaction potential by cyclic voltammetry; (S60) maintaining the electrolytic bath at the ascertained reaction potential to precipitate lithium on the surface of the electrode plate; and (S70) separating the lithium precipitated on the surface of the electrode plate.
Inventors:
LEE SANG RO (KR)
Application Number:
PCT/KR2013/006156
Publication Date:
January 16, 2014
Filing Date:
July 10, 2013
Export Citation:
Assignee:
LEE SANG RO (KR)
International Classes:
C25C3/02; C22B26/12
Foreign References:
| JPH0688277A | 1994-03-29 | |||
| KR101116687B1 | 2012-02-22 | |||
| JPH0626661B2 | 1994-04-13 | |||
| JP2011094227A | 2011-05-12 |
Attorney, Agent or Firm:
JEONG, SEONG JONG (KR)
정성종 (KR)
정성종 (KR)
Download PDF: