Solid state electrolyte lithium phosphorus sulfur chlorine moisture analyzer AKF-CH6

Above the forefront of solid-state battery research and development, lithium phosphorus sulfur chlorine (Li-P-S-Cl), as a representative of sulfide solid-state electrolytes, is regarded as the key to breaking through the energy density bottleneck of batteries due to its ultra-high ionic conductivity. However, lithium phosphorus sulfur chlorine is extremely sensitive to moisture, and even trace amounts of moisture at the ppm level can cause material decomposition, performance degradation, and even serious safety hazards. Therefore, accurate and rapid determination of the moisture content of lithium phosphorus sulfur chlorine has become an important key link in material research and development, production quality control, and battery manufacturing.

The solid-state electrolyte lithium phosphorus sulfur chlorine moisture analyzer (represented by AKF-CH6) designed specifically for this severe challenge is the "gatekeeper" to ensure material performance and battery safety.

1、 Why do we need a dedicated measuring instrument? The limitations of traditional methods

Traditional measurement methods such as thermogravimetric analysis are inadequate in dealing with highly active materials such as lithium, phosphorus, sulfur, and chlorine

Insufficient sensitivity: It is difficult to accurately detect trace amounts of moisture at the ppm level.

Large environmental interference: During the operation, the sample is prone to react with moisture in the air, resulting in distorted results.

Security risk: Open or semi open testing environments cannot effectively protect materials sensitive to water and oxygen.

Therefore, a professional solution that integrates enclosed environments, high-precision detection, and gentle heating is crucial.

2、 Core working principle of the instrument: Karl Fischer Coulomb method

The specialized moisture analyzer for lithium phosphorus sulfur chlorine electrolyte in this state adopts the standard method for trace moisture detection - Karl Fischer Coulomb method. The principle is that the water released from the sample undergoes a quantitative chemical reaction with the Karl Fischer reagent in the titration cell. By measuring the total amount of electricity required to electrolyze these reactants, the mass of water is accurately calculated according to Faraday's law. This method has an extremely low detection limit and high accuracy, making it particularly suitable for the analysis of trace amounts of moisture.

3、 Key components and characteristics of instrument systems

A professional oneSolid state electrolyte lithium phosphorus sulfur chlorine moisture analyzer AKF-CH6Usually includes the following core modules to ensure the success of testing:

1. Fully enclosed safety titration system: This is the core of the instrument. The entire measurement pathway is in a sealed state and can be connected to high-purity inert gas (such as nitrogen) as a protective gas and carrier gas, ensuring that the sample is isolated from the outside air from injection to the end of measurement, effectively preventing environmental humidity interference and material deterioration.

2. Precise temperature control heating injection device: Lithium phosphate sulfur chloride cannot withstand excessive temperature shock. The heating furnace equipped with the instrument can accurately control the temperature (such as 120 ° C), and through gentle heating, the crystal water and adsorbed water in the sample are fully released, while avoiding material decomposition due to overheating.

3. High sensitivity electrodes and detection circuits: Precision sensors such as dual platinum needle electrodes are used, combined with advanced polarization current detection technology, to sensitively capture trace moisture signals and ensure the accuracy of detection results.

4. Intelligent control and data processing system: The instrument is equipped with professional methods, and users only need to set parameters (such as temperature and gas flow rate). After weighing the sample, they can measure it with one click. The system automatically calculates and displays the moisture content (μ g and ppm), which is easy to operate and has good repeatability.

4、 Typical testing process and outstanding performance demonstration

Taking the AKF-CH6 solid-state electrolyte lithium phosphorus sulfur chlorine moisture analyzer as an example, its high efficiency and accuracy are demonstrated:

Step introduction:

1. Preparation: Add Karl Fischer reagent to the closed titration cell, introduce inert gas, and wait for the instrument background value to balance.

2. Injection: Accurately weigh a small amount of sample into a dedicated injection bottle, seal it, and place it in a heating tank.

3. Measurement: Start the measurement, the instrument automatically punctures the diaphragm of the sample bottle, and carries the moisture to the titration cell at the set temperature.

4. Result: After about 10 minutes, the instrument automatically displays and records the moisture content.

Performance verification:

Three parallel tests were conducted on the same batch of lithium phosphorus sulfur chlorine samples, and the results were 320.3ppm, 317.0ppm, and 325.9ppm, respectively, with an average value of 321.1ppm. The highly consistent data fully demonstrates the excellent repeatability and reliability of this measurement method.

Solid state electrolyte lithium phosphorus sulfur chlorine moisture analyzer AKF-CH6The core value lies in providing accurate and reliable data support for your research and production. Whether optimizing processes, controlling costs, or ensuring battery safety, it is a trustworthy instrument and equipment. We are willing to provide solid technical support for your exploration in the field of solid-state batteries.