DTD (1,3,2-Dioxathiolane 2,2-Dioxide or Ethylene Sulfate, 99.5%) Powder as Battery Electrolyte Additive, 25 g/bottle, CBEADTD

DTD (1,3,2-Dioxathiolane 2,2-Dioxide or Ethylene Sulfate), is a cyclic sulfonate additive (similar to PS and PES) used in Lithium-Ion Battery (LIB) electrolytes. Its primary function is to enhance the Solid Electrolyte Interphase (SEI) on the anode and stabilize the Cathode Electrolyte Interphase (CEI), especially for cells operating at high voltage and high. DTD has a lower reduction potential than standard carbonate solvents, causing it to decompose preferentially on the anode (graphite, silicon) during the initial charge cycles. The reduction involves the ring-opening of the molecule temperature. DTD's decomposition yields inorganic sulfur-containing species, such as Li2SO3 and various Li alkyl sulfonates. These components integrate into the SEI to create a film.

Part Number	CBEADTD (C-BEA-DTD)
CAS	1072-53-3
Chemical Formula	C2H4O4S
Appearance	White to White-Off Solid Powder
Purity	99.5% (Battery Grade)
Molecular Weight	124.12 g/mol
Storage Temperature	~2-8 °C (recommend)
Melting Point	95-97 °C
Package Size	25 g/bottle

Notes: Please store the DTD solution in the glovebox due to its sensitivity to humidity and oxygen 

References: 

1. T. Yang, et al. Sulfur-containing C2H2O8S2 molecules as an overall-functional electrolyte additive for high-voltage LiNi0.5Co0.2Mn0.3O2/graphite batteries with enhanced performance, J. Power Sources, 2020, 470, 228462.
2. Y. X. Huang, et al. 1,3,2-Dioxathiolane 2,2-Dioxide as a Bifunctional Electrolyte Additive to Enhance the Stability of Lithium Metal Anodes, ACS Sustainable Chem. Eng. 2023, 11, 9, 3760–3768.