PCS (1,3-Propanediol Cyclic Sulfate, 99.0%) Powder as Battery Electrolyte Additive, 25 g/bottle, CBEAPCS

PCS (1,3-Propanediol cyclic sulfate, also named 1,3,2-Dioxathiane 2,2-dioxide), 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. PCS 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. PCS'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	CBEAPCS (C-BEA-PCS)
CAS	1073-05-8
Chemical Formula	C3H6O4S
Appearance	White Powder
Purity	99.0%
Molecular Weight	138.14 g/mol
Melting Point	58-62 °C
Package Size	25 g/bottle

Notes: Please store the PCS Powder in the glovebox due to its sensitivity to humidity and oxygen 

References: 

1. Felix, et al. Mechanistic Basis of Enhanced Capacity Retention Found with Novel Sulfate-Based Additive in High-Voltage Li-Ion Batteries, J. Phys. Chem. C 2013, 117, 44, 22619–22626.
2. X. Chen, et al. Insight Into Sulfur-Containing Additive to Boost Anti-Oxidation Ability of the Ether-Based Electrolyte for Sodium-Ion Full Batteries, Adv. Funct. Mater., 2025, 35, 2424454.