What is Lithium (Li) Foil?

Lithium (Li) foil is a high-purity, thin-rolled lithium metal used in battery applications, research, and industrial processes. Due to its low density, high electrochemical potential, and reactivity, lithium foil is widely used in energy storage and electronic devices.

Chemical Properties and CAS Number

• Material: Lithium (Li)
• CAS Number: 7439-93-2
• Purity: 99.9% (3N) to 99.99% (4N)
• Appearance: Silvery-white metal
• Density: 0.534 g/cm³
• Melting Point: 180.5°C
• Boiling Point: 1,342°C
• Form: Thin foil sheets or custom-cut sizes

Applications of Lithium (Li) Foil

1. Lithium-Ion Batteries

Used as an anode material in high-performance lithium-ion and solid-state batteries for EVs, consumer electronics, and energy storage systems.

2. Nuclear and Research Applications

Utilized in nuclear fusion reactors, lithium-based coolants, and laboratory research.

3. Pharmaceutical and Chemical Synthesis

Acts as a reagent in organic synthesis and pharmaceutical manufacturing.

4. Alloy Production

Serves as an additive in aluminum and magnesium alloys to enhance strength and corrosion resistance.

5. Advanced Energy Storage

Applied in lithium-metal batteries, primary lithium cells, and experimental energy storage technologies.

Pricing of Lithium (Li) Foil

Pricing varies based on purity, thickness, and order volume:

• Standard Purity (3N, 99.9%): Typically $300 – $800 per kg
• High-Purity (4N, 99.99%): Ranges from $800 – $2,000 per kg
• Custom Sizes and Bulk Orders: Prices fluctuate based on supplier terms and specifications

Factors Influencing Pricing

• Purity level (3N vs. 4N lithium)
• Foil thickness and dimensions
• Market demand in battery and energy sectors
• Supply chain availability and lithium metal sourcing

Conclusion

Lithium (Li) foil is an essential material for advanced batteries, research, and industrial applications, offering superior electrochemical properties and lightweight benefits.