Dry preparation method for oxidized solid electrolyte and oxidized solid electrolyte

A solid electrolyte and dry method technology, applied in the field of materials, can solve the problems of increased preparation time, increased safety accidents, and complicated preparation process, and achieve the effect of simple and easy preparation method, high safety and low energy consumption

Active Publication Date: 2018-08-21
LIYANG TIANMU PILOT BATTERY MATERIAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drying process involves drying equipment and drying process, which makes the preparation process more complicated, the preparation time increases, and the preparation energy consumption increases
Especially when using organic solvents such as isopropanol, ethanol, acetone, etc., there are problems such as organic solvents are flammable and explosive, which greatly increases the possibility of safety accidents

Method used

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  • Dry preparation method for oxidized solid electrolyte and oxidized solid electrolyte
  • Dry preparation method for oxidized solid electrolyte and oxidized solid electrolyte
  • Dry preparation method for oxidized solid electrolyte and oxidized solid electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a dry method for preparing an oxidized solid electrolyte, such as figure 1 As shown, the steps include:

[0033] Step 110, weighing each raw material of the target oxide solid electrolyte material with a particle size of 10nm-100um according to the required stoichiometric ratio;

[0034] Among them, the raw materials include oxides, hydroxides, carbonates, phosphates or ammonium salts of Li, A, and B;

[0035] Wherein, A is one or more of Zr, Cr, Sn, B is one or more of Si, S, P, used to prepare LISICON solid state electrolyte;

[0036] Or, A is one or more of Al, Y, Ga, Cr, In, Fe, Se, La, B is one of Ti, Ge, Ta, Zr, Sn, Fe, V, metal hafnium Hf or more, used to prepare NASICON solid state electrolyte;

[0037] Alternatively, A is one or more of La, Al, Mg, Fe, Ta, and B is one or more of Ti, Nb, Sr, and Pr, to prepare a perovskite-type solid electrolyte;

[0038] Alternatively, A is one or more of La, Ca, Sr, Ba, and K, and B is one or more...

Embodiment 2

[0056] In this example, the preparation method described in Example 1 was used to prepare an oxidized solid electrolyte material.

[0057] Weigh 970.96g of lithium carbonate with a particle size of 1um, 446.60g of alumina with a particle size of 500nm, 2098.94g of titanium oxide with a particle size of 1um, and 6046g of ammonium dihydrogen phosphate powder with a particle size of 10um. Put the ammonium dihydrogen phosphate powder in a V-conical screw mixer and mix at a high speed at a speed of 400rpm, and the mixing time is 15 minutes. Then add the titanium oxide powder at a low speed of 20 rpm, and mix at a speed of 400 rpm for 15 minutes. According to the above steps, add lithium carbonate powder and alumina powder in turn. The final rotating speed is 400rpm for 2 hours. Take out the mixed precursor and put it in a box furnace for sintering. Sintering Sintering includes the process of staged heating and staged constant temperature. The specific procedure is: room temperat...

Embodiment 3

[0061] In this example, the preparation method described in Example 1 was used to prepare an oxidized solid electrolyte material.

[0062] Weigh 3240.2g of lithium carbonate with a particle size of 2um, 60.667g of alumina with a particle size of 200nm, 5815.8g of lanthanum oxide with a particle size of 4um, and 2932.7g of zirconia powder with a particle size of 500nm. Put the lanthanum oxide powder in a roller mill and stir at a speed of 30 rpm for 4 hours, then stand still, add lithium carbonate powder at a speed of 30 rpm, and mix for 4 hours. According to the above steps, add zirconia and alumina powder in turn. The final rotation speed was 30 rpm, and the mixing time was 24 hours. Take out the mixed precursor and put it in a box furnace for sintering. The sintering program is: room temperature to 900°C, heating rate 3°C / min, heat preservation for 12 hours, heating from 900°C to 1200°C, heating rate 1°C / min, 1200°C heat preservation for 24 hours. The semi-finished produc...

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Abstract

The invention discloses a dry preparation method for an oxidized solid electrolyte and an oxide solid electrolyte material. The method comprises the following steps: raw materials, with grain size being 10 nm-100 mu m, of a target oxide solid electrolyte material are weighed in a required stoichiometric ratio; the raw materials with grain size smaller than 10 mu m are added to dry blending equipment and stirred quickly at the rotating speed of 10-1000 rpm for 1-96 h; the remaining raw materials are added to the dry blending equipment from small grain size to large grain size sequentially at the rotating speed of 5-100 rpm, the materials are stirred at the rotating speed of 10-1000 rpm until all the remaining raw materials are added to the dry blending equipment, and a mixed material is obtained; the mixed material is sintered in sintering equipment, and a semi-finished material is obtained; the semi-finished material is fed to crushing equipment for preliminary crushing; the preliminarily crushed semi-finished material is fed to smashing equipment for smashing, and the oxidized solid electrolyte is obtained.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a dry method for preparing an oxidized solid electrolyte and the oxidized solid electrolyte. Background technique [0002] Lithium-ion batteries have been successfully used as the main energy storage device in the field of mobile power because of their high output voltage, high energy density, long cycle life, good safety performance, and no memory effect. In order to further meet the needs of grid energy storage, electric vehicles, and consumer electronics for energy storage devices, electrode materials with longer cycle life, better safety, and higher energy density and lithium battery systems have become research hotspots. The electrolyte system used in traditional lithium-ion batteries is an organic liquid in which lithium salt is dissolved. Overcharging, internal circuit and other abnormalities cause the electrolyte to heat up, and there is a risk of spontaneous combustion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562
CPCH01M10/0562Y02E60/10
Inventor 闫昭罗飞郑锋刘柏男陆浩褚庚
Owner LIYANG TIANMU PILOT BATTERY MATERIAL TECH CO LTD
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