Ethylene Sulfate (DTD) as a Lithium-Ion Battery Electrolyte Additive

With the continuous development of lithium-ion battery technology, electrolyte additives play an important role in improving battery performance, stability, and safety. Ethylene sulfate (DTD) is a functional electrolyte additive used in lithium-ion batteries, designed to help improve cycling performance, high-temperature stability, and safety characteristics of battery systems.

Overview of Ethylene Sulfate (DTD)

Ethylene sulfate (DTD), also known as 1,3,2-dioxathiolane 2,2-dioxide, is a sulfur-containing electrolyte additive commonly used in lithium-ion battery formulations. It is mainly applied as an additive material in battery electrolytes to optimize battery performance during charging and discharging processes.

The product grade mentioned is Cheeradd 272, with CAS No. 1072-53-3 and a molecular weight of 124.12. It is supplied as a white powder with a melting point of approximately 95.2–96.1°C.

Physical and Quality Properties

Ethylene sulfate (DTD) is produced according to quality requirements for battery material applications. Its appearance is white powder, and its purity and moisture level are important factors affecting its suitability for lithium-ion battery electrolyte systems.

Typical quality properties include:

• Product grade: Cheeradd 272
• CAS No.: 1072-53-3
• Molecular weight: 124.12
• Appearance: White powder
• Melting point: 95.2–96.1°C
• Purity (GC): ≥99.50%
• Moisture: ≤200 ppm
• Acid (HF): ≤150 ppm
• APHA value [DTD:DMC=1:3 (mass ratio)]: ≤50

The specific product performance depends on formulation requirements and application conditions.

Applications in Lithium-Ion Batteries

Ethylene sulfate (DTD) is mainly used as a quality lithium-ion battery electrolyte additive. During battery operation, electrolyte additives can participate in the formation and improvement of the solid electrolyte interface (SEI) layer, which plays a role in battery stability.

It can be applied in lithium-ion battery systems where improvements in charge-discharge cycle performance, high-temperature performance, and safety characteristics are required.

Common application areas include:

• Lithium-ion battery electrolyte formulations
• Energy storage battery systems
• Power battery materials
• Battery research and development applications

Advantages of Ethylene Sulfate (DTD)

As a battery electrolyte additive, Ethylene sulfate (DTD) provides several functional benefits in lithium-ion battery applications.

Main advantages include:

• Helps improve battery cycling performance
• Supports high-temperature performance optimization
• Contributes to battery safety improvement
• Suitable for advanced electrolyte formulations

The actual effect depends on the battery chemistry, electrolyte composition, additive ratio, and manufacturing process.

Storage and Selection Considerations

When selecting Ethylene sulfate (DTD), users should consider product purity, moisture content, acid content, compatibility with electrolyte systems, and storage conditions.

As a battery material, maintaining appropriate storage conditions is important for preserving material quality. Application testing and formulation optimization are also necessary to achieve the desired battery performance.

Conclusion

Ethylene sulfate (DTD) is an important lithium-ion battery electrolyte additive used to improve battery cycle performance, high-temperature stability, and safety characteristics. With its high purity, controlled moisture content, and suitable material properties, it can be applied in lithium-ion battery electrolyte systems and related energy storage fields. Selecting suitable additive materials according to battery design and formulation requirements helps support stable and reliable battery performance.