Title:
METHOD FOR RECYCLING LITHIUM FROM ELECTROLYTE OF LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/055518
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for recycling lithium from an electrolyte of a lithium ion battery, comprising: mixing a waste electrolyte and an extracting agent and then layering same to obtain an upper organic phase having a density of not higher than 1.07 g/cm3 and a lower lithium-loaded phase having a density of 1.15-1.5 g/cm3. The waste electrolyte comprises lithium ions and an ester organic solvent; the extracting agent comprises an aqueous solution of salt and a solvent; the solvent comprises at least one of ethanol and methanol; the upper organic phase comprises the ester organic solvent; the lithium-loaded phase comprises water. The method for recycling lithium of the present invention solves the problem that carbonic ester in the electrolyte is difficult to layer and separate after being mixed with water.
Inventors:
WANG JIAOPING (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
LI QIANG (CN)
ZHOU YOU (CN)
TAN MINGLIANG (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
LI QIANG (CN)
ZHOU YOU (CN)
TAN MINGLIANG (CN)
Application Number:
PCT/CN2023/077686
Publication Date:
March 21, 2024
Filing Date:
February 22, 2023
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
H01M10/54; B09B3/80; C22B26/12
Domestic Patent References:
| WO2008022415A1 | 2008-02-28 |
Foreign References:
| CN115528338A | 2022-12-27 | |||
| CN114759286A | 2022-07-15 | |||
| CN114865134A | 2022-08-05 | |||
| CN105502551A | 2016-04-20 | |||
| JPH11167936A | 1999-06-22 | |||
| CN106659947A | 2017-05-10 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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