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Additive

4-Fluoro-1,3-dioxolan-2-one (FEC)

Additive available by request for quote from Winigen Materials.

Product Details

4-Fluoro-1,3-dioxolan-2-one

Fluoroethylene carbonate (FEC) is an interphase-forming additive widely screened for silicon-containing anodes, lithium metal, sodium-ion hard carbon, and low-temperature formulations.

Category
Additive
Abbreviation
FEC
CAS Number
114435-02-8
Availability
RFQ

Typical Specification

  • Grade: Battery material grade
  • Physical: Colorless transparent liquid at room temperature; crystalline at lower temperature.
  • Formula: C3H3FO3
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Technical Selection Guide

Why is 4-Fluoro-1,3-dioxolan-2-one (FEC) evaluated as an electrolyte additive?

Fluoroethylene carbonate (FEC) is an interphase-forming additive widely screened for silicon-containing anodes, lithium metal, sodium-ion hard carbon, and low-temperature formulations. Its reduction products can alter SEI composition and mechanical behavior.

Why developers evaluate it

  • Relevant to silicon, lithium-metal, and hard-carbon SEI formation
  • Supports mechanism-based single-additive and package screening
  • Can be compared through formation, EIS, gas, and retention

Development considerations

  • Optimize loading because excessive fec can increase gas or impedance
  • Additive interactions may differ from single-component results
  • Benefits must be confirmed at realistic voltage, loading, and temperature

How to compare it

Use a structured matrix with an additive-free baseline, several concentrations, and the intended multi-additive package. Track first-cycle efficiency, impedance, gas or swelling, rate capability, high-temperature storage, and cycle retention rather than judging the additive from one metric.

Technical Profile

Electrolyte Additive Applications

4-Fluoro-1,3-dioxolan-2-one (C3H3FO3) is an electrolyte additive candidate for formulation optimization, interphase control, and performance screening. It can support additive-package development for lithium-ion, sodium-ion, high-voltage, high-rate, or low-temperature electrolyte systems.

  • Electrolyte additive screening and formulation optimization
  • SEI/CEI interphase, gas, impedance, or stability studies
  • High-voltage, fast-charge, or low-temperature electrolyte development
  • Custom additive-package evaluation with salts and solvents

Product FAQ

Common Questions

What is 4-Fluoro-1,3-dioxolan-2-one (FEC) used for?

4-Fluoro-1,3-dioxolan-2-one (FEC) is used or screened for electrolyte additive screening, interphase optimization, and custom formulation development. Winigen Materials can support RFQ-based supply and related electrolyte or battery materials development discussions.

What is the CAS number for 4-Fluoro-1,3-dioxolan-2-one (FEC)?

The CAS number shown for 4-Fluoro-1,3-dioxolan-2-one (FEC) is 114435-02-8.

What specifications are shown for 4-Fluoro-1,3-dioxolan-2-one (FEC)?

The target specifications currently shown are Grade: Battery material grade; Physical: Colorless transparent liquid at room temperature; crystalline at lower temperature.. Final specifications, documentation, and available quantity can be confirmed during RFQ.

Can I request a quote for 4-Fluoro-1,3-dioxolan-2-one (FEC)?

Yes. Use the request quote button on this page to pre-fill the product interest, category, and target specifications for 4-Fluoro-1,3-dioxolan-2-one (FEC).