1, 3, 2-Dioxathiolane 2,2-Dioxide (DTD) 500g

1,3,2-Dioxathiolane 2,2-Dioxide (DTD), Battery Grade 500g

Chemical Name: 1,3,2-Dioxathiolane 2,2-Dioxide
CAS Number: 1072-53-3
Product Code: EL1072-53-3
Synonyms: Ethylene Sulfate; DTD Additive
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Xnergy supplies battery-grade 1,3,2-Dioxathiolane 2,2-Dioxide (DTD), also known as ethylene sulfate or DTD electrolyte additive (CAS No. 1072-53-3), a cyclic sulfate compound for advanced lithium-ion battery (LIB) and lithium metal battery (LMB) applications. DTD meets strict purity and moisture specifications required by leading battery manufacturers and R&D institutions.

Key Features

• SEI Film Formation — DTD preferentially decomposes on the anode surface at a higher reduction potential than carbonate solvents (EC/PC), forming a stable, ionically conductive SEI layer that protects the electrode from irreversible side reactions
• Cycle Life Enhancement — forms stable complexes with lithium salts and alkali metal ions that significantly extend battery cycle life, particularly in graphite/LiFePO₄ (LFP) and graphite/NCM pouch cells
• Fast-Charging Performance — when combined with co-additives such as LiDFP, DTD enables commercial Gr/LFP cells to achieve over 2,400 cycles at 2C fast-charging rates
• High-Voltage Stabilization — proven additive for stabilizing high-voltage cathode systems including LiCoO₂, NCM811, and LNMO
• Lithium Metal Anode Protection — modifies the Li-ion solvation structure, suppresses lithium dendrite growth, reduces dead lithium formation, and improves coulombic efficiency in Li-metal batteries
• Sodium-Ion Battery R&D — also used in NaBOB-based electrolytes for sodium-ion battery research
• Flexible volumes — available from 500 g (lab) to 25 kg and bulk quantities

Specification

Application Areas

• Graphite/LiFePO₄ (LFP) and graphite/NCM pouch cell long-cycle-life electrolyte formulation
• Fast-charging LFP electrolyte development — enables >2,400 cycles at 2C when combined with co-additives such as LiDFP
• High-voltage cathode stabilization for LiCoO₂, NCM811, and LNMO systems
• Li-metal anode protection: suppresses dendrite growth, reduces dead lithium formation, improves coulombic efficiency
• Sodium-ion battery electrolyte research in NaBOB-based electrolyte systems
• Comparative SEI additive study (DTD vs. VC, FEC, PST) for anode passivation optimization

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