Electrolyte Additives for Col Battery Electrolytes

Electrolyte additives are the smallest-volume, highest-leverage component in a battery cell — a few weight percent rewrites the interphase chemistry, the flammability profile, and the high-voltage stability of an otherwise unchanged formulation. This collection groups the additives we stock for lithium-ion, lithium-metal, sodium-ion, and Li-S electrolyte work, and is organized by what each family actually does at the electrode-electrolyte interface.

SEI / CEI film-formers

Reductive film-formers decompose preferentially on the anode during the first cycles to build a flexible, ion-conducting solid electrolyte interphase. Fluoroethylene carbonate (FEC) is the workhorse for silicon and lithium-metal anodes that suffer large volume change; cyclic sulfates and sultones such as DTD (ethylene sulfate) and 1,4-butane sultone (BS) reinforce the SEI on graphite and LTO and contribute to a thin, robust CEI on high-voltage cathodes. Succinic anhydride (SA) is a low-loading anhydride additive used in Li-ion and Na-ion cells to passivate transition-metal cathodes.

Lithium / sodium salt-type additives

Borate and chelated-borate salts deliver B-O-rich interphases. NaBOB (sodium bis(oxalato)borate) is the sodium-ion analogue of LiBOB and is widely used in SIBs to stabilize both the anode SEI and the cathode CEI.

Flame retardants and fluorinated co-solvents

Phosphorus-based and fluorinated species reduce electrolyte flammability without rebuilding the formulation. DMMP (dimethyl methylphosphonate) scavenges combustion-chain radicals; FEMC (fluoroethyl methyl carbonate) raises the flash point and supports high-voltage operation as a co-solvent.

Ionic-liquid co-solvents and additives

Imidazolium-based ionic liquids such as [EMIM][TFSI] and [BMIM][TFSI] are non-flammable, low-vapor-pressure species used as safety-enhancing co-solvents in Li-ion, Li-metal, Na-ion, and supercapacitor electrolytes.

Specialty additives for Li-S and CO2RR

Phenyl disulfide (Ph2S2) acts as a redox mediator and polysulfide "scissor" in Li-S and Li-CO2 chemistries. Cationic surfactants such as CTAB reorganize interfacial water at the cathode in CO2 electroreduction to suppress HER. PSS (poly(sodium 4-styrenesulfonate)) is used as an ionically conductive aqueous binder and as a polyelectrolyte additive — it is a binder/polyelectrolyte rather than a sulfonated PFSA ionomer.

If you are stabilizing silicon or lithium-metal anodes, start with FEC and DTD; for high-voltage NCM or LNMO work, pair a sulfate/sultone with a fluorinated co-solvent; for safety-driven projects, browse the flame-retardant and ionic-liquid families above. For full electrolyte formulations rather than additives, see Electrolytes.

LiDFP (Lithium Difluorophosphate, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25-100 g/bottle, CLIBEALiDFP
HAZMAT

LiDFP (Lithium Difluorophosphate, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25-100 g/bottle, CLIBEALiDFP

LiDFP (Lithium Difluorophosphate, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25-100 g/bottle, CLIBEALiDFP

$129.00
LiBOB (Lithium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiBOB

LiBOB (Lithium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiBOB

LiBOB (Lithium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiBOB

$99.00
LiDFOB (Lithium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiDFOB

LiDFOB (Lithium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiDFOB

LiDFOB (Lithium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiDFOB

$129.00
LiDFBOP (Lithium Difluoro(bisoxalato)phosphate, or LiDFBP, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 5-25 g/bottle, CLIBEALiDFBOP
HAZMAT

LiDFBOP (Lithium Difluoro(bisoxalato)phosphate, or LiDFBP, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 5-25 g/bottle, CLIBEALiDFBOP

LiDFBOP (Lithium Difluoro(bisoxalato)phosphate, or LiDFBP, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 5-25 g/bottle, CLIBEALiDFBOP

$89.00
LiTFOP (Lithium tetrafluoro(oxalato)phosphate, >99.5%) Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEALiTFOP
HAZMAT

LiTFOP (Lithium tetrafluoro(oxalato)phosphate, >99.5%) Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEALiTFOP

LiTFOP (Lithium tetrafluoro(oxalato)phosphate, >99.5%) Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEALiTFOP

$109.00
NaDFP (Sodium Difluorophosphate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 g/bottle, CSIBEANaDFP

NaDFP (Sodium Difluorophosphate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 g/bottle, CSIBEANaDFP

NaDFP (Sodium Difluorophosphate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 g/bottle, CSIBEANaDFP

$169.00
NaBOB (Sodium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 10 g/bottle, CSIBEANaBOB

NaBOB (Sodium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 10 g/bottle, CSIBEANaBOB

NaBOB (Sodium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 10 g/bottle, CSIBEANaBOB

$149.00
NaDFOB (Sodium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 or 50 g/bottle, CSIBEANaDFOB

NaDFOB (Sodium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 or 50 g/bottle, CSIBEANaDFOB

NaDFOB (Sodium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 or 50 g/bottle, CSIBEANaDFOB

$99.00
Mn(OTf)2 {[Manganese Triflate], >99.0%} Powder as Battery Electrolyte Additive, 5-25 g/bottle, CBEAMnOTf
HAZMAT

Mn(OTf)2 {[Manganese Triflate], >99.0%} Powder as Battery Electrolyte Additive, 5-25 g/bottle, CBEAMnOTf

Mn(OTf)2 {[Manganese Triflate], >99.0%} Powder as Battery Electrolyte Additive, 5-25 g/bottle, CBEAMnOTf

$89.00
CsOTf {[Cesium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsOTf
HAZMAT

CsOTf {[Cesium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsOTf

CsOTf {[Cesium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsOTf

$119.00
CsFSI {[Cesium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFSI
HAZMAT

CsFSI {[Cesium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFSI

CsFSI {[Cesium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFSI

$119.00
CsTFSI {[Cesium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsTFSI
HAZMAT

CsTFSI {[Cesium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsTFSI

CsTFSI {[Cesium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsTFSI

$119.00
CsFTFSI {[Cesium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFTFSI
HAZMAT

CsFTFSI {[Cesium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFTFSI

CsFTFSI {[Cesium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFTFSI

$169.00
RbOTf {[Rubidium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbOTf
HAZMAT

RbOTf {[Rubidium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbOTf

RbOTf {[Rubidium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbOTf

$119.00
RbFSI {[Rubidium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFSI
HAZMAT

RbFSI {[Rubidium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFSI

RbFSI {[Rubidium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFSI

$119.00
RbTFSI {[Rubidium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbTFSI
HAZMAT

RbTFSI {[Rubidium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbTFSI

RbTFSI {[Rubidium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbTFSI

$119.00
RbFTFSI {[Rubidium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFTFSI
HAZMAT

RbFTFSI {[Rubidium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFTFSI

RbFTFSI {[Rubidium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFTFSI

$119.00
VC (Vinylene Carbonate, 99.9%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAVC
HAZMAT

VC (Vinylene Carbonate, 99.9%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAVC

VC (Vinylene Carbonate, 99.9%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAVC

$69.00
VEC (Vinylethylene Carbonate, 99.9%) as Battery Electrolyte Additive, 25-100 g/bottle, CBEAVEC
HAZMAT

VEC (Vinylethylene Carbonate, 99.9%) as Battery Electrolyte Additive, 25-100 g/bottle, CBEAVEC

VEC (Vinylethylene Carbonate, 99.9%) as Battery Electrolyte Additive, 25-100 g/bottle, CBEAVEC

$89.00
FEC (Fluoroethylene Carbonate, 99.95%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAFEC
HAZMAT

FEC (Fluoroethylene Carbonate, 99.95%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAFEC

FEC (Fluoroethylene Carbonate, 99.95%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAFEC

$79.00
FEMC (Fluoroethyl Methyl Carbonate, >99.95%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESAFEMC
HAZMAT

FEMC (Fluoroethyl Methyl Carbonate, >99.95%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESAFEMC

FEMC (Fluoroethyl Methyl Carbonate, >99.95%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESAFEMC

$129.00
BFEC {Bis(2-fluoroethyl) Carbonate, 99.0%} as Battery Electrolyte Co-Solvent and Additive, 10 g/bottle, CBESABFEC
HAZMAT

BFEC {Bis(2-fluoroethyl) Carbonate, 99.0%} as Battery Electrolyte Co-Solvent and Additive, 10 g/bottle, CBESABFEC

BFEC {Bis(2-fluoroethyl) Carbonate, 99.0%} as Battery Electrolyte Co-Solvent and Additive, 10 g/bottle, CBESABFEC

$179.00
DFEC (Difluoroethylene Carbonate, >99.9%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESADFEC
HAZMAT

DFEC (Difluoroethylene Carbonate, >99.9%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESADFEC

DFEC (Difluoroethylene Carbonate, >99.9%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESADFEC

$199.00
TFEC (Bis(2,2,2-trifluoroethyl) Carbonate, 99.5%) as Battery Electrolyte Co-Solvent and Additive, 25 g/bottle, CBESATFEC
HAZMAT

TFEC (Bis(2,2,2-trifluoroethyl) Carbonate, 99.5%) as Battery Electrolyte Co-Solvent and Additive, 25 g/bottle, CBESATFEC

TFEC (Bis(2,2,2-trifluoroethyl) Carbonate, 99.5%) as Battery Electrolyte Co-Solvent and Additive, 25 g/bottle, CBESATFEC

$149.00

Electrolyte Additives for Col Battery Electrolytes

Filters

LiDFP (Lithium Difluorophosphate, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25-100 g/bottle, CLIBEALiDFP

LiBOB (Lithium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiBOB

LiDFOB (Lithium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 25 g/bottle, CLIBEALiDFOB

LiDFBOP (Lithium Difluoro(bisoxalato)phosphate, or LiDFBP, >99.9%) Powder as Electrolyte Additive for Lithium-Ion Battery, 5-25 g/bottle, CLIBEALiDFBOP

LiTFOP (Lithium tetrafluoro(oxalato)phosphate, >99.5%) Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEALiTFOP

NaDFP (Sodium Difluorophosphate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 g/bottle, CSIBEANaDFP

NaBOB (Sodium Bis(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 10 g/bottle, CSIBEANaBOB

NaDFOB (Sodium Difluoro(oxalato)borate, 99.9%) Powder as Electrolyte Additive for Sodium-Ion Battery, 25 or 50 g/bottle, CSIBEANaDFOB

Mn(OTf)2 {[Manganese Triflate], >99.0%} Powder as Battery Electrolyte Additive, 5-25 g/bottle, CBEAMnOTf

CsOTf {[Cesium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsOTf

CsFSI {[Cesium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFSI

CsTFSI {[Cesium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsTFSI

CsFTFSI {[Cesium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEACsFTFSI

RbOTf {[Rubidium Triflate], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbOTf

RbFSI {[Rubidium bis(fluorosulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFSI

RbTFSI {[Rubidium bis(trifluoromethanesulfonyl)imide], >99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbTFSI

RbFTFSI {[Rubidium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide,], >99.9%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g/bottle, CLIBEARbFTFSI

VC (Vinylene Carbonate, 99.9%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAVC

VEC (Vinylethylene Carbonate, 99.9%) as Battery Electrolyte Additive, 25-100 g/bottle, CBEAVEC

FEC (Fluoroethylene Carbonate, 99.95%) as Battery Electrolyte Additive, 50-100 g/bottle, CBEAFEC

FEMC (Fluoroethyl Methyl Carbonate, >99.95%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESAFEMC

BFEC {Bis(2-fluoroethyl) Carbonate, 99.0%} as Battery Electrolyte Co-Solvent and Additive, 10 g/bottle, CBESABFEC

DFEC (Difluoroethylene Carbonate, >99.9%) as Battery Electrolyte Co-Solvent and Additive, 25-100 g/bottle, CBESADFEC

TFEC (Bis(2,2,2-trifluoroethyl) Carbonate, 99.5%) as Battery Electrolyte Co-Solvent and Additive, 25 g/bottle, CBESATFEC