Shijiazhuang, August 25, 2026 — Shijiazhuang Pengnuo Technology Co., Ltd. (“Pengnuo Technology”) has officially launched its high-purity Ethylene Sulfate (DTD, CAS No.: 1072-53-3) electrolyte additive for lithium-ion batteries to the global market. As a next-generation film-forming electrolyte additive, DTD significantly enhances cycle life, high-temperature stability, and low-temperature discharge performance of lithium-ion batteries, delivering a high-performance material solution for battery manufacturers in electric vehicles, energy storage systems, and consumer electronics.
Product Overview
Ethylene Sulfate, chemically known as 1,3,2-Dioxathiolane 2,2-dioxide, has a molecular formula of C₂H₄O₄S and a molecular weight of 124.12 g/mol. It appears as a colorless to pale yellow transparent liquid at room temperature. Pengnuo Technology’s DTD product is manufactured under strict purification process controls, featuring low moisture content and stable acidity, meeting the stringent purity requirements of high-end lithium-ion battery electrolytes.
Core Technical Mechanism
The core value of DTD lies in its excellent SEI (Solid Electrolyte Interphase) film-forming capability. Research shows that DTD undergoes reduction on the graphite anode surface at approximately 1.3 V (vs. Li/Li⁺), higher than that of conventional ethylene carbonate (EC) at 0.95 V. This enables DTD to preferentially undergo ring-opening reduction on the anode surface before electrolyte solvent decomposition, generating lithium sulfite, lithium alkyl sulfites, and other components that form a thin, dense, uniform, and stable SEI protective film.
This protective film serves two key functions: first, it effectively isolates the electrolyte from direct contact with electrode materials, inhibiting continuous electrolyte decomposition and irreversible side reactions; second, it allows selective passage of lithium ions (Li⁺) only, significantly reducing battery interfacial impedance. Additionally, DTD can form a stable CEI (Cathode Electrolyte Interphase) film on the cathode surface, enhancing cathode stability under high-voltage systems.
Performance Benefits and Applications
In practical applications, the recommended dosage of DTD is approximately 1% by total electrolyte mass. Electrochemical tests demonstrate that electrolytes with DTD deliver significant improvements in:
- Extended cycle life: The stable SEI film reduces active lithium loss and electrolyte consumption during cycling, significantly improving long-term capacity retention;
- Optimized high-temperature performance: Effectively suppresses gas generation and capacity fade during high-temperature cycling and storage;
- Enhanced low-temperature discharge: The low-impedance interfacial film improves lithium-ion conduction efficiency at low temperatures;
- Improved graphite compatibility: In propylene carbonate (PC)-based electrolytes, DTD forms a film first, effectively preventing graphite exfoliation.
The product is widely applicable to ternary lithium batteries, lithium iron phosphate batteries, and high-voltage, high-energy-density battery systems, serving as a key functional material in electrolyte formulations for electric vehicle power batteries, large-scale energy storage stations, and portable electronic devices.
Quality Assurance and Supply Capability
Backed by a professional chemical R&D and production system, Pengnuo Technology has established full-process quality control standards from raw material screening and synthesis to purification. The company’s DTD product offers excellent batch-to-batch consistency and is available in multiple packaging specifications from laboratory to industrial scale, with customizable purity requirements. With a comprehensive logistics and foreign trade service system, Pengnuo Technology provides stable and timely product supply to customers worldwide.
Market Outlook
As the global penetration rate of new energy vehicles continues to rise and the energy storage market grows rapidly, demand for lithium-ion battery electrolyte additives continues to expand. Ethylene Sulfate, as a high-performance additive with both SEI film-forming and interface optimization capabilities, has become one of the core components in next-generation electrolyte formulations. Pengnuo Technology will continue to increase R&D investment in lithium battery materials, providing higher-quality chemical solutions for the global new energy industry.
About Shijiazhuang Pengnuo Technology Co., Ltd.
Shijiazhuang Pengnuo Technology Co., Ltd. is a technology-oriented enterprise specializing in the R&D, production, and sales of fine chemicals. Its product portfolio covers lithium battery electrolyte additives, conductive polymers, UV absorbers, biological buffers, phase transfer catalysts, and more, widely used in new energy, electronics, pharmaceuticals, coatings, and other industries. The company is committed to creating value for global customers with high-quality products and professional technical services.
• Official Website:www.pengnuochemical.com
• E‑mail:sales@pengnuochemical.com
Post time: Aug-25-2026