IEST Electrolyte Wetting Testing System(EWS/ETS/CHT)

Description

1. Principle of Electrode Wetting

The Lucas–Washburn Equation is commonly used to describe the dynamic of liquid absorption in electrode pores, as represented by the equation below:

• r represents the radius of the capillary (m),
• σ represents the surface tension of the imbibition fluid (N/m),
• η represents the viscosity of the imbibition fluid (Pa*s),
• θ represents the contact angle of the wet phase (°),
• h represents the liquid suction height (m),
• t represents the liquid suction time,
• cr represents a fixed value, called the formal radius.

2. Applications

• Electrolyte: Performance Evaluation
• Electrode: Consistency Assessment
• Optimization of material: Electrode Surface Treatment Processes

2.1 Capillary Wetting System-EWS Series

Key Features：

• Equipped with a high-precision vision testing system for stable and efficient testing repeatability.
• In-situ real-time characterization of electrolyte wetting rateon negative electrode sheets of lithium-ion batteries.
• Applicable Samples: Negative electrode sheets.
• The greater the compacticion of the electrode sheet, the lower the porosity, resulting in poorer electrolyte wetting.

2.2 Weight Wetting System-ETS Series

Key Features：

• Equipped with a high-precision weighing system for stable and efficient testing repeatability.
• In-situ real-time characterization of electrolyte wetting rate on positive and negative electrode sheets of lithium-ion batteries.
• Applicable samples: Anode electrodes & Jelly Cells

2.3. Height Wetting System-CHT Series

Key Features：

• Equipped with a high-precision vision acquisition system for stable and efficient testing repeatability.
• In-situ real-time characterization of electrolyte wetting rate on positive and negative electrode sheets of lithium-ion batteries.
• Applicable samples: Anode electrodes