Applicability of Air Jet Mills in Processing Polyanionic Materials

1. Advantages of Low-Temperature Grinding

Air jet mills achieve a low-temperature environment (close to room temperature) through the adiabatic expansion of compressed air, making them particularly suitable for grinding heat-sensitive materials (such as sugar-containing, low-melting-point, or easily decomposable polyanionic compounds), avoiding chemical structure damage caused by high temperatures.

2. Requirement for Sealed Inert Environment

If polyanionic materials are sensitive to water and oxygen (such as sulfide solid electrolytes), grinding must be conducted under the protection of inert gases (nitrogen, argon). Sealed isolation-type air jet mills can operate entirely within a glove box or inert atmosphere, preventing material oxidation or hydrolysis.

3. High Purity and Low Contamination

The equipment lining can be made of materials such as tungsten carbide or silicon carbide ceramic (Mohs hardness 9.6), which hardly introduce impurities, meeting the high-purity requirements of polyanionic materials.