Product Introduction

Lithium Tetrafluoroborate (LiBF₄, CAS No. 14283-07-9) is an important fluorinated lithium salt widely used in electrochemical energy storage, lithium-ion batteries, lithium metal batteries, supercapacitors, and advanced electrolyte research.

As an electrolyte salt, LiBF₄ provides Li⁺ ions for ionic conduction and contains a weakly coordinating BF₄⁻ anion, offering good thermal stability and chemical compatibility with various organic solvents.

Compared with conventional Lithium Hexafluorophosphate (LiPF₆), LiBF₄ demonstrates improved resistance to moisture and thermal stability, making it attractive for specialized electrolyte systems, including high-temperature batteries, aluminum current collector compatibility studies, and next-generation electrolyte formulations.

Structural Characteristics

Lithium Tetrafluoroborate consists of:

Lithium Ion (Li⁺)

• Provides lithium-ion transport in electrolyte systems
• Supports reversible charge/discharge reactions

Tetrafluoroborate Anion (BF₄⁻)

• Weakly coordinating fluorinated anion
• Provides electrolyte stability
• Improves compatibility with organic solvents

The BF₄⁻ anion structure contributes to LiBF₄'s chemical stability and makes it suitable for specialized electrochemical applications.

Key Research Applications

1. Lithium-Ion Battery Electrolyte Salt

LiBF₄ is widely studied as an electrolyte salt for rechargeable lithium batteries.

Applications include:

• Lithium-ion battery electrolyte formulation
• Electrolyte composition optimization
• Lithium-ion conductivity studies
• Electrode/electrolyte compatibility evaluation
• Battery performance research

LiBF₄ can be dissolved in organic solvents to provide lithium-ion conductivity for electrochemical cells.

2. Lithium Metal Battery Research

LiBF₄ is investigated in advanced lithium metal battery systems.

Applications include:

• Lithium metal anode compatibility studies
• Lithium deposition behavior analysis
• Interfacial stability research
• High-energy-density battery development

3. High-Temperature Battery Systems

Due to its thermal stability, LiBF₄ is studied for battery applications under demanding conditions.

Applications include:

• High-temperature lithium batteries
• Thermal stability evaluation
• Long-life electrolyte development
• Harsh-environment energy storage

4. Aluminum Electrolyte and Current Collector Compatibility Research

LiBF₄ has been investigated for electrolyte systems requiring improved aluminum compatibility.

Applications include:

• Aluminum current collector stability studies
• High-voltage lithium battery electrolytes
• Electrochemical corrosion research
• Electrolyte additive evaluation

5. Supercapacitors and Electrochemical Devices

LiBF₄ is also used in non-aqueous electrolyte systems for electrochemical devices.

Applications include:

• Supercapacitor electrolytes
• Electrochemical capacitor research
• Ion transport studies
• Energy storage device development

6. Solid-State and Polymer Electrolyte Research

LiBF₄ is explored in advanced electrolyte materials.

Applications include:

• Polymer electrolyte systems
• Gel polymer electrolytes
• Hybrid solid-liquid electrolytes
• Lithium-ion conductivity enhancement studies

Advantages

• Provides lithium ions for electrolyte systems
• Good thermal stability
• Better moisture tolerance than some conventional lithium salts
• Suitable for specialized battery applications
• Compatible with various organic electrolyte solvents
• Useful for advanced electrolyte development

Storage & Handling

• Store in a tightly sealed container.
• Protect from moisture and humidity.
• Keep in a dry, cool environment.
• Avoid prolonged exposure to air.
• Handle under dry-room or inert atmosphere conditions for battery applications.

LiBF₄ is moisture-sensitive and should be protected from water contamination during electrolyte preparation.

Research Areas

• Lithium-ion batteries
• Lithium metal batteries
• Solid-state batteries
• Polymer electrolytes
• Supercapacitors
• Electrochemical energy storage
• Advanced electrolyte materials

What is Lithium Tetrafluoroborate (LiBF₄)?

Lithium Tetrafluoroborate (LiBF₄) is a fluorinated lithium salt used as an electrolyte component in lithium batteries and electrochemical energy storage systems.

What is LiBF₄ used for?

LiBF₄ is mainly used in:

• Lithium-ion battery electrolytes
• Lithium metal battery research
• High-temperature battery systems
• Supercapacitor electrolytes
• Advanced electrolyte development

Is LiBF₄ a battery electrolyte salt?

Yes. LiBF₄ is an electrolyte salt that provides lithium ions for ionic conduction. It is not an electrode material.

What is the difference between LiBF₄ and LiPF₆?

Can LiBF₄ be used in solid-state batteries?

Yes. LiBF₄ is studied in polymer, gel, and hybrid electrolyte systems for solid-state battery research.

Is LiBF₄ a cathode or anode material?

No. LiBF₄ is an electrolyte salt, not an electrode active material.