Preparation method of LLZO powder

A lithium lanthanum zirconium oxide powder technology, applied in the direction of electrochemical generators, electrical components, circuits, etc., can solve the problems of reducing energy consumption, reducing temperature, etc., to reduce calcination temperature, reduce grain size, process The effect of simple process

Active Publication Date: 2018-08-17
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF6 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned technical status of LLZO, the present invention aims to improve the preparation method of LLZO powder, reduce the grain size of LLZO powder on the one hand, and reduce the temperature in the preparation process on the other hand, thereby not only reducing energy consumption, but also avoiding the It is necessary to add an excess lithium source to compensate for the loss of lithium due to high temperature during synthesis and sintering.

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
  • Preparation method of LLZO powder
  • Preparation method of LLZO powder
  • Preparation method of LLZO powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, LLZO powder is made of Li 7 La 3 Zr 2 O 12 The matrix and doped element aluminum are composed of Li:La:Zr:Al=7:3:2:0.24. The synthesis steps are as follows:

[0032] (1) Put an equivalent amount of lithium acetate into a beaker, add water and magnetically stir for several minutes to completely dissolve, and obtain a clear and transparent solution;

[0033] (2) Add citric acid monohydrate with 15% product mass as an ionic complexing agent and a powder leavening agent, and magnetically stir for several minutes to completely dissolve to obtain a clear transparent solution;

[0034] (3) To the equivalent of nano Al in the above clear and transparent solution 2 O 3 Powder, magnetically stirred to obtain a uniform milky white suspension;

[0035] (4) Weigh the equivalent La 2 O 3 The powder is poured into the ball milling tank together with the above solution, and mechanically ball milled for 2-3 hours;

[0036] (5) Weigh the equivalent of ZrO with high specific sur...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method of LLZO powder. The LLZO powder is prepared by adopting soluble lithium acetate as a lithium source, water as a solvent medium and ZrO2 with high specific surface area as a coating template of a lithium salt through simple mechanical ball-milling and drying and calcining methods. According to the method, reduction of the grain size is facilitated, reduction of the calcination temperature is facilitated, the grain size of the prepared LLZO powder is in nanoscale, the phase is single and the energy consumption is low. The problem that the excessive lithium source needs to be added to compensate the loss of a lithium element due to high temperature in synthesis and sintering when the powder is synthesized is solved; and a compact sheet body with good lithium ion conductivity can be further obtained through granulation, compaction and sintering.

Description

Technical field [0001] The invention belongs to the technical field of lithium lanthanum zirconium oxide oxide, and specifically relates to a method for preparing lithium lanthanum zirconium oxide powder. Background technique [0002] Traditional commercial lithium-ion batteries use organic electrolyte, which has potential safety hazards such as electrolyte leakage, combustion, and explosion. Lithium-sulfur, lithium-air batteries, as well as new battery negative electrodes to increase energy density often use metal lithium. The generation of lithium dendrites can cause short circuits in the battery and affect safe use. All-solid-state batteries using solid electrolytes, due to their non-flammable, non-corrosive, non-leakage, and ability to prevent the growth of lithium dendrites, fundamentally solve the battery short-circuit problem, improve safety, and are also beneficial to high Invention and application of energy density batteries. [0003] Inorganic oxide lithium ion conducto...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0525
CPCH01M10/0525H01M10/0562H01M2300/0077Y02E60/10
Inventor 潘星星王建新官万兵
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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