Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for synthesizing zinc-doped ternary material precursor from waste lithium battery through recovery

A technology for waste lithium batteries and ternary materials, applied in the field of ternary material precursors, can solve the problem of inability to remove impurity metals, and achieve the effect of increasing added value and reducing process flow

Active Publication Date: 2018-06-01
TIANQI LITHIUM CORP
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses a high-temperature roasting method to recover the positive electrode material, which cannot remove impurity metals, and also cannot directionally obtain a single metal element doping, especially a single zinc-doped ternary material

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
  • Method for synthesizing zinc-doped ternary material precursor from waste lithium battery through recovery
  • Method for synthesizing zinc-doped ternary material precursor from waste lithium battery through recovery
  • Method for synthesizing zinc-doped ternary material precursor from waste lithium battery through recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for reclaiming and synthesizing a zinc-doped ternary material precursor by waste lithium batteries, comprising the following steps:

[0044] 1. See Table 1 for the composition of the acid immersion solution for the positive electrode material of the waste lithium battery. Use 5% NaOH solution to adjust the pH to 4, add iron powder with 3 times the Cu content and stir at 150rpm for 0.5h, then add 1.2 times the amount of hydrogen peroxide, stirring and reacting at the same rate for 0.5 to 1 hour can remove other doping elements.

[0045] Table 1 (unit: g / L)

[0046] mn

Ni

co

SO 4 2-

Na +

Li +

Al

Fe

Cu

Zn

Pb

Si

12.92

14.36

23.08

366.4

0.038

5.33

2.11

0.44

0.060

0.094

0

0.038

[0047] 2. See Table 2 for the composition of the pickling solution after removing other doping elements. Take 200mL of pickling solution after removing impurities, add 8.15gNiSO 4 .6H ...

Embodiment 2

[0056] A method for reclaiming and synthesizing a zinc-doped ternary material precursor by waste lithium batteries, comprising the following steps:

[0057] 1. See Table 4 for the composition of the acid dipping solution for the positive electrode material of the waste lithium battery. Use 5% NaOH solution to adjust the pH to 4, add iron powder with 3 times the Cu content and stir at 150rpm for 0.5h, then add 1.2 times the amount of hydrogen peroxide, other doping elements can be removed after stirring and reacting at the same rate for 0.5h.

[0058] Table 4 (unit: g / L)

[0059] mn

Ni

co

SO 4 2-

Na +

Li +

Al

Fe

Cu

Zn

Pb

Si

12.92

14.36

23.08

366.4

0.038

5.33

2.11

0.44

0.060

0.094

0

0.038

[0060] 2. See Table 5 for the composition of the pickling solution after removing other doping elements. Take 200mL of pickling solution after removing impurities, add 36.14gNiSO 4 .6H ...

Embodiment 3

[0069] A method for reclaiming and synthesizing a zinc-doped ternary material precursor by waste lithium batteries, comprising the following steps:

[0070] 1. See Table 7 for the composition of the acid immersion solution for the positive electrode material of the waste lithium battery. Use 5% NaOH solution to adjust the pH to 5, add iron powder with 4 times the Cu content and stir at 150rpm for 0.5h, then add 1.4 times the amount of hydrogen peroxide, the other doping elements can be removed by stirring the reaction at the same rate.

[0071] Table 7 (unit: g / L)

[0072] mn

Ni

co

SO 4 2-

Na +

Li +

Al

Fe

Cu

Zn

Pb

Si

12.92

14.36

23.08

366.4

0.038

5.33

2.11

0.44

0.060

0.094

0

0.038

[0073] 2. See Table 8 for the composition of the pickling solution after removing other doping elements. Take 200mL of pickling solution after removing impurities, add 8.41gNiSO 4 .6H 2 O, 6....

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

A waste lithium battery contains Zn, and after a ternary precursor is doped with Zn, interface stability of an electrode / electrolyte and the structural stability at high voltage can be improved, increase of charge transfer resistance during the cycle is inhibited, and Li<+> diffusion is facilitated. Therefore, the invention discloses a method for synthesizing a zinc-doped ternary material precursor from the waste lithium battery through recovery. The method comprises the following steps: removing doping elements except Zn from an acid leaching solution of a waste lithium battery cell crushingmaterial, adjusting the content of Ni, Co and Mn, synthesizing a doping material with a coprecipitation method, and performing precipitation, washing and drying to obtain the single zinc-doped ternarymaterial precursor. The single zinc-doped ternary material precursor is obtained while the ternary precursor is synthesized from the waste lithium battery through recovery; the method has the advantages of being simple in process flow, good in doping effect, cost-saving and capable of significantly improving electrochemical performance of the precursor and the like.

Description

technical field [0001] The invention belongs to the field of battery materials, and in particular relates to a method for recycling and synthesizing a zinc-doped ternary material precursor from waste lithium batteries. Background technique [0002] The nickel-cobalt-manganese ternary precursor is nickel-cobalt-manganese hydroxide (Ni x co y mn z (OH) 2 ), nickel-cobalt-manganese carbonate, oxalate and other compounds, mainly used in ternary positive electrode materials nickel-cobalt-manganese lithium manganese oxide (LiNi x co y mn z o 2 )Synthesis. At present, ternary precursors are mainly synthesized by co-precipitation method. The ternary cathode material is synthesized by high-temperature sintering of ternary precursors and lithium hydroxide or lithium carbonate. It has the characteristics of large specific capacity, high energy density, good cycle performance, and simple and feasible synthesis method. It is currently mainly used in the power field. [0003] Aft...

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): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 曹乃珍高洁肇巍谢宇充王梦李溢文徐川李仕红
Owner TIANQI LITHIUM CORP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com