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Method for detecting content of inorganic elements in sample of lithium lanthanum zirconium oxide type solid electrolyte

A solid electrolyte and inorganic element technology, applied in the field of analytical chemistry, can solve the problems of unpublished literature reports or test standards, and achieve the effect of simple operation and high data accuracy

Active Publication Date: 2019-03-29
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, at this stage, there is no published literature report or test standard for the test of the content of inorganic elements in the new solid electrolyte material of LLZO compound.

Method used

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  • Method for detecting content of inorganic elements in sample of lithium lanthanum zirconium oxide type solid electrolyte
  • Method for detecting content of inorganic elements in sample of lithium lanthanum zirconium oxide type solid electrolyte

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Embodiment 1

[0075] In this example, detection of Li 7-x La 3 Zr 2-x Ta x o 12 Li, La, Zr and Ta contents in samples of (LLZTO) solid electrolyte. The specific method is as follows:

[0076] (a) Weigh 0.1000g of sample into a platinum crucible, add 3g of anhydrous sodium carbonate-borax (mass ratio: 2:1) mixed flux, stir well and then cover 1g, then put the platinum crucible into the temperature rise to 900°C In a muffle furnace, rise to 1000 ° C for 30 minutes to melt;

[0077] (b) After the platinum crucible in step (a) is slightly cooled, take it out from the muffle furnace and put it into a 50mL polytetrafluoroethylene beaker, add 25mL ultrapure water and 10mL hydrochloric acid, and put it on a heating plate at 200°C extract on

[0078] (c) After taking out the platinum crucible, add 10mL of hydrofluoric acid, continue heating for 20min, take it out, and let it stand for 2 hours;

[0079] (d) Filter the solution after the reaction is left to stand in a 100mL plastic volumetric ...

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Abstract

The invention provides a method for detecting content of inorganic elements in a sample of a lithium niobium zirconium oxygen type solid electrolyte. The detection method comprises the following stepsof: (1) melting the sample, adding hydrofluoric acid and filtering to obtain filtrate and filter residue; (2) performing an alkali fusion process on the filter residue, and adding a hydrochloric acidsolution to obtain a solution of the filter residue; and (3) measuring the content of the inorganic elements in the filtrate and the solution of the filter residue by an inductively coupled plasma optical emission spectrometer. According to the method for detecting the content of inorganic elements in the sample of the lithium niobium zirconium oxygen type solid electrolyte, the content of lithium, lanthanum, and zirconium in the sample of the lithium lanthanum zirconium oxide type solid electrolyte can be detected by the inductively coupled plasma emission spectrometer, which has higher accuracy of data, is easier to operate, and is faster and more efficient.

Description

technical field [0001] The invention relates to the technical field of analytical chemistry, in particular, the invention relates to a method for detecting the content of inorganic elements in a sample of a lithium lanthanum zirconium oxygen solid state electrolyte. Background technique [0002] Lithium-ion batteries have been considered the most promising chemical energy storage devices since their commercialization in 1991. However, safety issues posed by the flammability, leakage, and dendrite-like properties of organic liquid electrolytes hinder the great advantages of lithium-ion batteries in large-scale energy storage. However, inorganic solid-state electrolytes have many advantages such as superior chemical, mechanical, and thermal stability, as well as the possibility of battery miniaturization. [0003] Among them, the garnet-structured Li 7 La 3 Zr 2 o 12 (LLZO), due to its high overall ionic conductivity, excellent chemical and thermal stability, especially i...

Claims

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Application Information

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IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 郎荣树卫盼盼刘占文黄添文
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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