Pressure intensity-controllable solid power electric conductivity test device

Abstract

The invention relates to a pressure intensity-controllable solid power electric conductivity test device. The pressure intensity-controllable solid power electric conductivity test device comprises a core component, a commercial digital source meter and a computer data processing system; the core component is composed of a base, a load sensor, an insulation pad, a positioning cross beam, slide rail locators, a roller, slide rails, an upper baffle, a servo motor, a rotary encoder, a controller, a sample test mold and so on; the load sensor can detect the intensity of pressure applied onto the load sensor; the sample test mold is composed of an upper part, a middle part and a lower part, wherein the upper part and the lower part are electric conduction bodies, and the middle part is an insulating hollow mold; the positioning cross beam, the slide rail limiters, the roller, the slide rails and the like can control the servo motor to advance or retreat according to signals; the speed of the movement of the servo motor is provided by the controller; and the rotary encoder transfers a sample thickness value to the controller. The test range of the device covers materials from materials of which the electric conductivities are extremely low to conductor materials, for example, the electric conductivities of lithium iron phosphate and carbon nanocages, which are detected by using the method, are 8.23*10<-9> and 6.44 Scm<-1> respectively.

Description

technical field [0001] The invention relates to a pressure-controllable solid powder conductivity testing device, which can realize real-time and rapid measurement of the compacted thickness, pressure and conductivity of solid powder samples to be tested, and can cover conductor materials to materials with extremely low conductivity. The result is accurate and should have good practical value. Background technique [0002] Conductivity is a parameter used to describe the ease of charge transfer in a substance. The conductivity of a solid material can directly reflect the conductivity of the material and is an important parameter to measure the intrinsic physical properties of the material. [0003] Under the dual pressure of environmental degradation and energy crisis, the development and application of sustainable high-performance energy conversion and storage devices is particularly urgent, the core of which is electrode materials, and the conductivity of electrode materi...

AI Technical Summary

Problems solved by technology

For powder materials (such as carbon materials, etc.) that are difficult to be pressed into thin films, there is currently no reliable method to measure their electrical conductivity

Images