Disclosed is an electrolyte for a secondary battery, and a secondary battery comprising the same, and in particular, to an electrolyte for a secondary battery including an electrolyte salt, an organic solvent and an additive, wherein the additive includes at least one compound selected from the group consisting of a compound having an N—Si-based bond and a compound having an O—Si-based bond.

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; a first additive containing at least one compound among compounds represented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

The present disclosure relates to phosphate derivatives of indole compounds and pharmaceutical compositions thereof, and their use in stimulating the immune system of patients such as cancer patients.

A non-aqueous electrolyte composition containing (i) at least one aprotic organic solvent; (ii) a compound of formula (I) (iii) at least one ion containing conducting salt; and (iv) optionally one or more additives. ##STR00001##

Dihydrogen metaphosphate can be synthesized via protonation, and can react with a dehydrating agent to afford tetrametaphosphate anhydride. A monohydrogen tetrametaphosphate organic ester can be derived from the anhydride. A metal tetrametaphosphate complex can be prepared using a metal salt and a dihydrogen tetrametaphosphate.

Phosphonate based lithium complexes of formula (I) and their use in electrolyte compositions for electrochemical cells. ##STR00001##

An electrolyte for a secondary battery, and a secondary battery including the same, and in particular, an electrolyte for a secondary battery including an electrolyte salt, an organic solvent and an additive, wherein the additive includes at least one compound selected from the group consisting of a compound having an N-Si-based bond and a compound having an O-Si-based bond. By including an additive including a specific chemical bond, the electrolyte for a secondary battery suppresses film formation on a multivalent metal surface, and may thereby enhance efficiency and lifetime properties of a multivalent metal secondary battery.

The present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. The non-aqueous electrolyte comprises: a non-aqueous organic solvent; a lithium salt; a first additive containing at least one compound among compounds represented by chemical formulas 1 to 4; and a second additive containing at least one compound among compounds represented by chemical formula 5 or 6.

Phosphonate based lithium complexes of formula (I) and their use in electrolyte compositions for electrochemical cells.

##STR00001##

A non-aqueous electrolyte composition containing (i) at least one aprotic organic solvent; (ii) a compound of formula (I) (iii) at least one ion containing conducting salt; and (iv) optionally one or more additives.

##STR00001##