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Solid electrolyte ionic conductivity test clamp, solid electrolyte ionic conductivity test system and solid electrolyte ionic conductivity test method

A technology of solid electrolyte and test fixture, which is applied in the direction of measuring resistance/reactance/impedance, parts of electrical measuring instruments, measuring devices, etc., and can solve problems such as high pressure, inaccurate measurement results, and damage

Pending Publication Date: 2017-09-29
ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a fixture for testing the ionic conductivity of a solid electrolyte. The fixture has a simple structure and avoids damage to the solid electrolyte due to too much pressure on the first fixture part and the second fixture part. The poor contact between the fixture part and the second fixture part and the solid electrolyte leads to inaccurate measurement results

Method used

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  • Solid electrolyte ionic conductivity test clamp, solid electrolyte ionic conductivity test system and solid electrolyte ionic conductivity test method
  • Solid electrolyte ionic conductivity test clamp, solid electrolyte ionic conductivity test system and solid electrolyte ionic conductivity test method
  • Solid electrolyte ionic conductivity test clamp, solid electrolyte ionic conductivity test system and solid electrolyte ionic conductivity test method

Examples

Experimental program
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Effect test

Embodiment 1

[0072] Step S1: Take an appropriate amount of lithium titanium phosphate powder and sinter to form a solid electrolyte sheet of a certain size, and place the platinum sheet, solid electrolyte sheet, and platinum sheet in sequence in the first jig part 1 and the second jig part where the contact surfaces are completely overlapped 2, align them, and install pressure sensors between the first jig part 1 and the solid electrolyte sheet and between the second jig part 2 and the solid electrolyte sheet, refer to figure 1 . Alternatively, a second insulating sleeve 9 is installed between the first clamp part 1 and the second clamp part 2, and the platinum sheet, the solid electrolyte sheet, and the platinum sheet are sequentially stacked and placed in the second insulating sleeve 9, and a pressure sensor is provided. , the positions of the platinum sheet, the solid electrolyte sheet and the platinum sheet are defined by the second insulating sleeve 9, which can be referred to figur...

Embodiment 2

[0076] Under an argon atmosphere, take an appropriate amount of Li3 P.S. 4 The powder is pressed into a solid electrolyte sheet of a certain size for Li 3 P.S. 4 The measurement of the lithium ion conductivity is the same as the measurement method in Example 1, and will not be repeated here.

Embodiment 3

[0078] Under an argon atmosphere, take an appropriate amount of Na 3 P.S. 4 The powder is compressed into a solid electrolyte sheet of a certain size for Na 3 P.S. 4 The measurement of the sodium ion conductivity is the same as the measurement method of Example 1, and will not be repeated here.

[0079] The method for testing the conductivity of a solid electrolyte provided by the invention can be applied to detect the ion conductivity of a solid electrolyte material to be tested under different temperatures and different atmospheres. The atmosphere environment can be selected according to the stability of the solid electrolyte material to be tested, such as an air atmosphere used for testing stable solid electrolytes, and an inert atmosphere such as nitrogen or argon used for testing unstable solid electrolytes.

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Abstract

The present invention discloses a solid electrolyte ionic conductivity test clamp. The clamp comprises: a first clamping portion and a second clamping portion which are detachably connected and configured to clamp a solid electrolyte; and a pressure sensor configured to measure the pressure values of the first clamping portion and / or the second clamping portion for the solid electrolyte. The contact condition of the first clamping portion, the second clamping portion and the solid electrolyte is dynamically regulated according to the pressure values between the solid electrolyte and the first clamping portion and between the solid electrolyte and the second clamping portion to allow the first clamping portion and / or the second clamping portion to perform tight and uniform contact with the solid electrolyte so as to avoid the damaging caused by too large pressure of the first clamping portion and the second clamping portion for the solid electrolyte and avoid the problem that the measurement result is not accurate caused by bad contact between the solid electrolyte and the first clamping portion and between the solid electrolyte and the second clamping portion. The present invention further provides a solid electrolyte ionic conductivity test system. The present invention further provides a solid electrolyte ionic conductivity test method.

Description

technical field [0001] The invention relates to the technical field of conductivity testing, in particular to a solid electrolyte ion conductivity testing fixture, a solid electrolyte ion conductivity testing system, and a solid electrolyte ion conductivity testing method. Background technique [0002] Driven by social development needs and market status, battery technology is developing in the direction of safety, reliability, long service life, scale integration, low cost, and environmental friendliness. All-solid-state batteries using solid electrolytes meet the above development requirements for new types of batteries in the future, and have broad prospects in power batteries and energy storage batteries. Solid electrolytes are usually also called fast ion conductors or superionic conductors, which refer to a class of materials with high ionic conductivity, low conductance activation energy, and channels or segments suitable for fast ion transport in the structure. Ioni...

Claims

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Application Information

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IPC IPC(8): G01R27/02G01R1/04
CPCG01R1/0408G01R27/02
Inventor 杨菁许晓雄黄祯姚霞银赵锋东朱骏
Owner ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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