Electrochemical lithium recovery method

An electrochemical and lithium recovery technology, applied in the field of energy materials and electrochemical lithium recovery, can solve the problems of high lithium recovery cost, surge in recovery cost, and low recovery efficiency, and achieve low cost, significant practical value, and realization of recycling. Effect

Active Publication Date: 2013-09-04
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as low recovery efficiency and low purity, which need to be purified again, and the recovery cost has increased sharply
On the other hand, for LiFePO4 batteries that are widely used in ele...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrochemical lithium recovery method
  • Electrochemical lithium recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Preparation of iron phosphate material:

[0021] 11.3g Fe(NO 3 ) 3 ·6H 2 O, 2.74gH 3 PO 4 Mix well, make 70ml aqueous solution, pour into 100ml Teflon-lined stainless steel reaction kettle, conduct hydrothermal reaction at 150°C for 24h, cool naturally to room temperature, remove all solvents to obtain precursor. Place the precursor in a drying oven at 60°C to dry to obtain the target product, iron phosphate.

[0022] figure 1 This is the SEM picture of the obtained ferric phosphate material. It can be seen from the picture that the material synthesized by this method has a uniform and regular spherical structure with a particle size of 2-3 μm. Each microsphere is composed of nanoparticles with a diameter of about 100 nm. .

[0023] Preparation of iron phosphate electrode:

[0024] Will figure 2 The iron phosphate material and acetylene black are mixed evenly according to the mass ratio of 9:1, and 1% polytetrafluoroethylene emulsion is added to make a uniform...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an electrochemical lithium recovery method. Lithium in a solution is enriched through an electrochemical process by iron phosphate (FePO4), and the obtained lithiated iron phosphate material undergoes heat treatment to prepare a lithium iron phosphate positive electrode material. The electrochemical method which is used to extract lithium has a high lithium extraction selectivity, and is not influenced by other ions in the solution, and the electrochemical product lithiated iron phosphate can be directly converted to the lithium iron phosphate material after processing. So the method is very suitable for the direct extraction of lithium from the ionic solution having low values, and has the advantages of simple process, easy control and low cost, substantial practical values and good application prospect.

Description

technical field [0001] The invention relates to a method for electrochemically recovering lithium and the reuse of lithium iron phosphate (LiFePO4) materials, belonging to the field of energy materials and technologies. Background technique [0002] Lithium-ion batteries are widely used in portable electronic products such as notebook computers, mobile phones, and digital cameras due to their high specific capacity, long cycle life, wide operating temperature range, small self-discharge, and no memory effect. According to statistics, the global production of lithium-ion batteries exceeded 580 million in 2000, and the domestic production was about 100 million. In 2003, the global production reached 1.255 billion. In 2008, the output reached 2.71 billion. In 2010, the global production exceeded 3 billion. . With the development of economic technology and the development and utilization of global resources, lithium-ion batteries will become the main power source of electric ve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C25C1/02H01M10/54
CPCY02W30/84Y02P10/20
Inventor 吴越贾蕗路裴锋伍发元田旭皮元丰毛荣军张员根
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap