Preparation method of high-conductivity solid-state battery electrolyte for energy storage charging system battery

A solid-state electrolyte and charging system technology, applied in the field of preparation of solid-state battery electrolyte, can solve the problems of low conductivity of battery electrolyte and insufficient preparation process, achieve clear and sharp diffraction peaks, and improve the effect of ion conductivity

Pending Publication Date: 2021-07-23
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in view of the insufficient preparation process of the solid-state electrolyte in the existing energy storage and charging system, the purpose of the present invention is to provide a method for preparing a high-conductivity solid-state battery electrolyte for the battery of the energy storage and charging system, To solve the technical problem of low conductivity of battery electrolyte in energy storage charging system

Method used

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  • Preparation method of high-conductivity solid-state battery electrolyte for energy storage charging system battery
  • Preparation method of high-conductivity solid-state battery electrolyte for energy storage charging system battery
  • Preparation method of high-conductivity solid-state battery electrolyte for energy storage charging system battery

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Embodiment 1

[0030] Such as Figure 1 ~ Figure 2 Shown, a kind of preparation method of high-conductivity solid-state battery electrolyte for battery of energy storage charging system comprises the following steps:

[0031] A. Select La 2 o 3 as la 3+ source, due to La 2 o 3 Chemically unstable in air, easy to absorb H 2 O reacts to form La(OH) 3 , so La 2 o 3 Put it into the furnace and heat it at 900°C for 12h. Lithium hydroxide monohydrate (LiOH·H 2 O), ZrO 2 respectively as Li + Source, Zr 2+ source, in order to avoid volatilization loss of Li element during high-temperature calcination, so an excess of 10% lithium oxide was added for mixing to make up for the loss of Li element, and then LiOH·H 2 O, La 2 o 3 , ZrO 2 The corresponding masses of the three raw materials are weighed according to the substance ratio of 7:3:2. Put the three weighed materials into a high-speed ball mill ball mill tank with balls, the ratio of balls to materials is 10:1, add isopropanol as a ...

Embodiment 2

[0042] A method for preparing a high-conductivity solid-state battery electrolyte for an energy storage charging system battery, comprising the following steps:

[0043] A. Select La 2 o 3 as la 3+ source, due to La 2 o 3 Chemically unstable in air, easy to absorb H 2 O reacts to form La(OH) 3 , so La 2 o 3 Put it into the furnace and heat it at 1000°C for 12h. Lithium carbonate (LiCO 3 ), ZrO 2 respectively as Li + Source, Zr 2+ Source, in order to avoid volatilization loss of Li element during high temperature calcination, so an excess of 10% LiCO was added 3 Mixing is performed to compensate for the loss of Li elements, and then the LiCO 3 , La 2 o 3 , ZrO 2 The corresponding masses of the three raw materials are weighed according to the substance ratio of 7:3:2. Put the three weighed materials into a high-speed ball mill ball mill tank with ball materials, the ratio of ball materials to 10:1, use isopropanol as a solvent, control the ball milling speed to ...

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Abstract

The invention provides a preparation method of a high-conductivity solid-state battery electrolyte for an energy storage charging system battery, which comprises the following steps of (1) weighing lithium oxide, lanthanum oxide (La2O3) and zirconium oxide (ZrO2) as raw materials according to the mass ratio of (7-7.8): 3: 2, mixing to obtain a mixture, and performing ball milling on the mixture by using a high-speed ball mill to obtain mixed powder A, (2) putting the mixed powder A obtained in the step (1) into a crucible, putting the crucible into an atmosphere furnace, sintering, naturally cooling to obtain garnet type electrolyte Li7La3Zr2O12 (LLZO) precursor powder, taking out the precursor powder, and carrying out high-speed ball milling at the same rotating speed and time as that in the step (1) to obtain powder B, and (3) pressing the powder B obtained in the step (2) into an electrolyte sheet by using a tablet press, then putting the electrolyte sheet into a crucible, carrying out landfill sintering by using mother powder, and cooling to room temperature through two-stage sintering to obtain the LLZO solid electrolyte, so that the technical problem of low conductivity of the battery electrolyte of the energy storage charging system can be solved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion solid-state batteries, and relates to a method for preparing a high-conductivity solid-state battery electrolyte for an energy storage charging system battery. Background technique [0002] As a new type of green energy storage and charging system, lithium secondary batteries have attracted widespread attention in the 21st century because of their low environmental pollution, high energy density, long cycle stability, and excellent electrochemical stability. The performance of the electrolyte in lithium-ion batteries directly determines the development of lithium battery technology. Traditional lithium batteries usually use flammable and explosive liquid electrolytes, which can easily cause safety accidents such as mobile phone explosions and electric vehicles spontaneous combustion. [0003] In order to improve the safety and stability of lithium batteries, people have turned their attention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0525
CPCH01M10/0562H01M10/0525H01M2300/0068H01M2300/0071Y02E60/10
Inventor 梁兴华李锁姜兴涛徐静蓝凌霄吴希
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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