Ethylene Carbonate (EC), Battery Grade 500g

Ethylene Carbonate (EC), Battery Grade 500g

Chemical Name: Ethylene Carbonate
CAS Number: 96-49-1
Product Code: EL96-49-1
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Ethylene carbonate (EC) is the foundational cyclic carbonate solvent in lithium-ion battery electrolyte formulations. Its high dielectric constant allows lithium salts such as LiPF₆ to dissociate fully, producing the free Li⁺ ions that carry charge through the electrolyte. EC also plays a critical role in forming the solid electrolyte interphase (SEI) on graphite anodes — the protective layer that determines cycle life and first-cycle efficiency. Without EC, most graphite-based cells would suffer rapid capacity loss. It is almost always used in combination with linear co-solvents (DMC, EMC, or DEC) to reduce viscosity and improve low-temperature conductivity.

Key Features

• High dielectric constant — enables full dissociation of lithium salts (LiPF₆, LiFSI) for maximum ionic conductivity in the electrolyte
• SEI film-forming capability — preferentially reduces on graphite anode surfaces to form a stable, ionically conductive interphase layer critical for cycle life
• Essential co-solvent base — virtually all commercial Li-ion electrolyte formulations (EC/DMC, EC/EMC, EC/DEC) are built around EC as the cyclic carbonate component
• Purity ≥99%, H₂O ≤10 ppm, Acid ≤10 ppm — battery-grade specifications with precisely controlled moisture and free acid to prevent electrolyte degradation
• Flexible supply volumes — 500 g for lab-scale formulation work, scaling to 1 kg, 25 kg, and bulk for pilot and production

Specification

Application Areas

• Lithium-ion battery electrolyte formulation (half-cell and full-cell)
• Graphite and silicon anode SEI formation studies
• Electrolyte screening and optimization for NCM, LFP, and LCO cathode systems
• Solid-state battery research — liquid electrolyte reference baseline
• Sodium-ion battery electrolyte formulation (with sodium salts)

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