The invention discloses a flame-retardant potassium ion battery electrolyte and a preparation method thereof. The flame-retardant potassium ion battery electrolyte comprises an organic solvent, sylvite and a flame retardant. The organic solvent is a carbonic ester organic solvent and/or an ether organic solvent. The flame retardant accounts for 0.1-50% of total mass of the flame-retardant potassium ion battery electrolyte. The general structural formula of the flame retardant is as shown in the specification, wherein R1-R6 all can be alkyl groups, alkyloxy group, halogenated alkyl group, halogenated alkyloxy group, halogenated alkylene group, phenyl group, biphenyl group, halogenated phenyl group, halogenated biphenyl group, alkyl silicon, alkyloxy silicon, alkyl phosphate, alkyloxy boron or amide group. According to the flame-retardant potassium ion battery electrolyte, safety of a potassium ion battery can be raised, and cycling stability of the battery and battery capacity retention ratio also can be enhanced.

Flame-retardant potassium ion battery electrolyte and preparation method thereof

The invention provides a flame retardant and a preparation method thereof, and belongs to related field of lithium batteries The flame retardant provided by the invention is a hexachlorocyclotriphosphazene derivative, has a good flame retardant effect and is applied to electrolyte of a lithium battery; compared with a conventional flame retardant, the flame retardant effect is more obvious, better flame retardant effect can be realized by adding a small amount of the flame retardant, the electrolyte is lower in viscosity, the influence to the electric conductivity of the electrolyte is smaller, the flame retardant also has better compatibility with a negative electrode material, and the lithium battery is capable of keeping higher electrochemical performance while having a better flame retardant function Meanwhile, the preparation method of the flame retardant, provided by the invention, has the characteristics that a synthesis technology is simple, the cost is low, and economy and environment protection are realized

Flame retardant as well as preparation method and application thereof

A stable electrolyte for a supercapacitor The stable electrolyte for a supercapacitor consists of an electrolyte salt, a non-aqueous organic solvent, and a functional additive The electrolyte salt is one or more of tetramethylammonium bis(oxalate)borate, triethylammonium tetrafluoroborate, lithium tetrafluoroborate, and lithium hexafluorophosphate The non-aqueous organic solvent is one of propylene carbonate, gamma-butyrolactone, acetonitrile, and N,N dimethyl formamide The functional additive is butanedinitrile The electrolyte has good electrochemical stability, chemical stability, and charge-discharge cycle stability

Stable electrolyte for supercapacitor and preparation method therefor

The invention discloses a cyclophosphazene flame retardant and a preparation method thereof; the cyclophosphazene flame retardant is a chlorocyclotriphosphazene derivative having a stable structure, namely a fluoroalcohol substituted cyclotriphosphazene product, can be produced in large scale, and has high market value and social benefits.

Cyclophosphazene flame retardant and preparation method thereof

A flame-retardant electrolyte for a super capacitor, consisting of an electrolyte salt, an organic solvent, and a functional additive The electrolyte salt is one or more of tetramethylammonium bis (oxalate) borate, triethylammonium tetrafluoroborate, lithium tetrafluoroborate, and lithium hexafluorophosphate The organic solvent is one of propylene carbonate, γ-butyrolactone, acetonitrile, and N,N-dimethylformamide The functional additive is a fluorine-substituted phosphazene compound The electrolyte for a super capacitor has good stability and flame retardance

Flame-retardant electrolyte for super capacitor, preparation method therefor, and super capacitor

The invention provides a lithium-sulfur battery electrolyte. The lithium-sulfur battery electrolyte is prepared from carbonic ester organic solvent, lithium salt and flame-retardant co-solvent. The flame-retardant co-solvent is a phosphonitrile compound, and the mass fraction of the flame-retardant co-solvent is 20%-50%. The concentration of the lithium salt is 0.8 mol/L-1.2 mol/L. The invention further relates to a preparation method of the lithium-sulfur battery electrolyte and a lithium-sulfur battery.

Lithium-sulfur battery electrolyte, preparation method thereof and lithium-sulfur battery

A lithium-sulfur battery electrolyte and a preparation method therefor, and a lithium-sulfur battery containing the electrolyte. The electrolyte comprises carbonate organic solvents, a lithium salt and flame-retardant cosolvent, the flame-retardant cosolvent being a phosphazene compound, the mass fraction of the flame-retardant cosolvent being 20-50%, and the concentration of the lithium salt being 0.8 mol/L-1.2 mol/L.

Lithium-sulfur battery electrolyte and preparation method therefor, and lithium-sulfur battery

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Lithium-sulfur battery electrolyte, preparation method thereof and lithium-sulfur battery

Lithium-sulfur battery electrolyte and preparation method therefor, and lithium-sulfur battery