LiTFSI Elektrolyte by E-Lyte Innovations

LiTFSI based electrolytes for lithium-ion batteries

Electrolyte salt: Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) (and appropriate co-salts depending on the application)

Solvents: Carbonate-based solvents i.e. EC, PC, DOL, DME (solvent type and composition is discussable upon application)

Example Composition:1 M LiTFSI dissolved in EC:DMC (1:1, v:v)

Batch size: 25 g – 20kg (larger amounts available on request )

Packaging Electrolyte: UN-safety aluminum bottles (made in Germany), sealed in pouch bags under an inert gas atmosphere


  • Our electrolytes come in UN-certified aluminum transport bottles (made in Germany), which are wrapped in pouch bags sealed under an inert gas atmosphere
  • Pouch bags are shipped in UN-approved cardboard boxes suitable for the transportation of dangerous goods (in compliance with ADR).

Delivery time:max. 14 days within the EU

If you are further interested in our tailor-made LiTFSI-based electrolyte solutions, please feel free to contact us at or by using our contact form:

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Characteristics of LiTFSI as conducting salt in electrolytes

Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI, LiC2F6NO4S2) is a promising alternative to the most used lithium salt, LiPF6, due to its advanced thermal and chemical stability, including a reduced sensitivity towards hydrolysis.

However, the inability of LiTFSI to form a protective layer on the aluminum current collector leading to the anodic dissolution of aluminum at high potentials (> 3.5 V vs. Li+/Li), limits its use as single salt, without LiPF6 or fluorinated solvents.

Application fields

LiTFSI is highly soluble in water and organic solvents. This enables its use in either water-in-salt electrolytes for aqueous lithium-ion batteries or highly concentrated electrolytes. When used as an additive for high-voltage applications (> 4.5 V vs. Li+/Li), it can enhance the long-term cycling stability > 500 cycles.