HOME >> PRODUCTS >> Lithium Battery Assembly Machine >> Material Characterization Tester

Single Particle Force Properties Test System

Single Particle Force Properties Test System

Product Name:Single Particle Force Properties Test System
Model:KAT-SPFT2000
Brand Name: KAT
Email: saleskatbattery@gmail.com
Mobile: +86 18650702009
INQUIRY

Single Particle Force Properties Test System

Test Object

Lithium battery anode and cathode electrode materials

Test Particle Size

Single particle size: 5~50μm

Application

1. Testing the crushing strength of battery material particles

2. Can be used to evaluate the pressure resistance of the material

3. Guide the rolling process

4. Materials with high mechanical strength will have better subsequent cycle stability.

Product Introduction

1.Background

Testing the crushing strength of battery material particles can be used to evaluate the pressure resistance of the material and guide the rolling process. Materials with high mechanical strength will have better subsequent cycle stability.

IEST Single Particle Force Properties Test System Details-2

2. Testing Object

Lithium battery positive and negative electrode materials(Positive: polycrystalline ternary; lithium-rich material; Negative: silicon-based, hard carbon, etc.; solid electrolyte)

3. Test Particle Size

Single particle size: 5~50 um

IEST Single Particle Force Properties Test System Details-3

4. Equipment Composition

IEST Single Particle Force Properties Test System Details-4

IEST Single Particle Force Properties Test System Details-5

Testing Program

1. Testing Method

Disperse the powder into the liguid., Add it dropwise to the glass slide. Locate the single particle under an optical microscope. Control the pressure head to press down at a constant speed. Collect the force and displacement curves during the particle compression process and calculate the mechanical properties of the single particle.

2. Test Parameters

1) Magnification: up to 1200 times;
2) Pressure test range: 0-100 mN;
3) Pressure test accuracy: ±0.1 mN;
4) Minimum displacement unit: 10 nm;

5) Data collection frequency: 1000HZ.

IEST Single Particle Force Properties Test System Details-6

6) Comply with national standard GB/T 43091-2023″Powder Compressive strength Test Method”

Application

1. Anode Material-Sic

IEST Single Particle Force Properties Test System Details-7

IEST Single Particle Force Properties Test System Details-8

1) Two silicon-carbon materials with different electrode compaction.

2) Comparison of crushing force distribution: A>B.
3) Analysis of stress-displacement curves: Sample A exhibits initialmicro-crackingfollowed by complete collapse, while sample B expe-riences direct structural collapse and fragmentation.
4) Comparison of Disintegration States: after fracturing, all three groups disintegrate into fine granular states.

Particle Compression Resistance and Powder Compaction

IEST Single Particle Force Properties Test System Details-9

Case 1: Two Different Pure Carbons

IEST Single Particle Force Properties Test System Details-10

The compressive resistance of particle level C1 is stronger. Corresponding to the powder end, C1has a higher compression modulus than C2, with both maximum deformation and irreversible deformation smaller than C2.

Case 2: Three Different Carbon-Silicon Materials

IEST Single Particle Force Properties Test System Details-11

IEST Single Particle Force Properties Test System Details-12

SC-3 has weaker compressive strength of its particles, resulting in significantly larger maximum deformation and irreversible deformation when the powder is compressed compared to theother two materials.

2. Ternary Cathode Material-NCM811

Case 1：

IEST Single Particle Force Properties Test System Details-13