Table of Contents
- Product Overview & Specifications
- Key Applications of Lithium Bis(fluorosulfonyl)imide (LiFSI)
- Technical Usage Guidelines
- Industry Case Studies
- Contact for Technical Consultation
Lithium Bis(fluorosulfonyl)imide (LiFSI) CAS 171611-11-3: Product Specifications
Basic Parameters
| Parameter | Value |
|---|---|
| CAS Number | 171611-11-3 |
| Molecular Formula | LiN(SO2F)2 |
| Molecular Weight | 187.07 g/mol |
| Appearance | White crystalline powder |
| Purity | ≥99.9% (Battery Grade) |
| Density | 1.78 g/cm³ |
| Melting Point | 145-150°C |
| Solubility | Highly soluble in organic carbonates |
Performance Comparison with Common Lithium Salts
| Property | LiFSI | LiPF6 | LiTFSI |
|---|---|---|---|
| Thermal Stability | >200°C | ≤70°C | 180°C |
| Conductivity (1M in EC/DMC) | 10.5 mS/cm | 10.1 mS/cm | 9.8 mS/cm |
| Aluminum Corrosion | Non-corrosive | Corrosive | Moderate |
| Moisture Sensitivity | Low | High | Moderate |
Advanced Applications in Energy Storage Systems
1. High-Voltage Lithium-Ion Batteries
Enables stable operation above 4.4V through superior oxidation resistance. Recommended concentration: 0.5-1.5M in ternary solvent systems.
2. Solid-State Battery Electrolytes
Enhances ionic conductivity of polymer electrolytes (PEO-based) by 300% at 60°C when used as 15-20% additive.
3. Extreme-Temperature Supercapacitors
Maintains >90% capacitance retention from -40°C to 120°C in acetonitrile-based electrolytes.
Technical Handling Protocol
1. Storage Requirements
Store in argon-filled containers at ≤30°C/≤20% RH. Shelf life: 36 months in original packaging.
2. Electrolyte Formulation
Optimal performance achieved with 1:1:1 EC/PC/DMC solvent blend. Pre-dry solvents to ≤10ppm H2O before mixing.
3. Compatibility Matrix
| Material | Compatibility | Notes |
|---|---|---|
| NMC Cathodes | Excellent | Reduces transition metal dissolution |
| Graphite Anodes | Good | Requires 5% FEC additive |
| Aluminum Current Collectors | Superior | No passivation needed |
Documented Industry Implementations
Case 1: EV Battery Thermal Management
Client: Leading European EV Manufacturer
Challenge: Reduce thermal runaway risk in 811 NMC cells
Solution: 1.2M LiFSI in fluorinated electrolyte blend
Result: Passed nail penetration test at 45°C, cycle life increased to 2000+
Case 2: Aerospace Power Systems
Client: Satellite Power Supplier Contact our electrolyte specialists for application-specific solutions:
Requirement: -60°C to +150°C operational range
Implementation: 0.8M LiFSI in sulfolane-based electrolyte
Outcome:
94% capacity retention after 500 thermal cycles
Technical Consultation & Ordering
Email: info@vivalr.com
Tel: (86) 15866781826Request for Proposal Checklist



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