Battery Electrolytes

The electrolyte is the ion-transport layer that decides every cell's rate capability, voltage window, and SEI/CEI chemistry — pick the salt, the carrier, the additive package, and the physical form together, not in isolation. This collection is the parent index for the four electrolyte building blocks and the one ready-to-use liquid family that EChem Supplies stocks for lithium-ion, lithium-metal, Li-S, sodium-ion, potassium-ion, multivalent (Mg, Ca, Zn, Al), supercapacitor, and CO2RR research.

Browse by the role each sub-collection plays in a working electrolyte:

• Main Salts — the conducting salts in dry powder form, grouped by working cation: lithium imides and triflates, sodium and potassium imide/PF6/BF4 pairs, and multivalent TFSI / OTf salts for Mg, Ca, Zn, and Al cells.
• Solvents — polar aprotic carriers and ionic liquids organized by family: glymes and linear ethers, phosphate flame-retardant solvents, and imidazolium / pyrrolidinium / piperidinium ionic liquids for Li-metal, Na-metal, supercapacitor, and CO2RR work.
• Electrolyte Additives — small-volume, high-impact compounds that rebuild the SEI, raise the flash point, or steer CO2RR selectivity: fluorinated carbonates and sultones, borates and polyelectrolytes, phosphate flame retardants, and surfactant additives.
• Liquid Electrolytes — ready-to-use bottled formulations across lithium-ion, Li-S, sodium-ion, potassium-ion, zinc-ion, and supercapacitor chemistries, supplied at working molarity for direct glovebox or dry-room use.
• Solid-State Electrolytes — oxide ceramics (garnet LLZO/LLZTO, NASICON LATP and NZSPO), sulfide superionics (argyrodite LPSC, Li7P3S11), halide electrolytes (LYC, LZC), and polymer hosts (PEO, PEGDME, PDMS) for ASSB prototyping.

If you are formulating from scratch, start in Main Salts and Solvents, then refine the interphase in Electrolyte Additives. If you want to skip formulation and run cells today, go to Liquid Electrolytes; for safer, higher-voltage, or solid-state work, see Solid-State Electrolytes.