Lg Chem, Ltd

Hye Yun Cha

Yu Sin Kim

Hyeong Jin Kim

Ho Chun Lee

Disclosed is a compound represented by the following formula 1:  wherein, each of R&#x2dc;Rindependently represents &#x2014;H, &#x2014;F, &#x2014;Cl, &#x2014;Br, &#x2014;I, &#x2014;OH, &#x2014;SH, &#x2014;COOH, &#x2014;POH, &#x2014;NH, &#x2014;NO, &#x2014;O(CHCHO)H (wherein, n is an integer of 1&#x2dc;5), C&#x2dc;Calkyl group, C&#x2dc;Caminoalkyl group, C&#x2dc;Chydroxyalkyl group, C&#x2dc;Chaloalkyl group, C&#x2dc;Calkenyl group, C&#x2dc;Calkoxy group, C&#x2dc;Calkylamino group, C&#x2dc;Cdialkylamino group, C&#x2dc;Caryl group, C&#x2dc;Caminoaryl group, C&#x2dc;Chydroxyaryl group, C&#x2dc;Chaloaryl group, C&#x2dc;Cbenzyl group, C&#x2dc;Caminobenzyl group, C&#x2dc;Chydroxybenzyl group, C&#x2dc;Chalobenzyl group, or nitrile group (&#x2014;CN); and at least one of R&#x2dc;Ris nitrile group (&#x2014;CN). A non-aqueous electrolyte comprising: (i) a lithium salt, (ii) a solvent, and (iii) a compound represented by formula 1; and a secondary battery comprising the non-aqueous electrolyte are also disclosed. When the compound represented by formula 1 is added to a non-aqueous electrolyte, it is possible to improve the safety of a secondary battery in an overcharged state.

Additive for non-aqueous electrolyte and secondary battery using the same

Disclosed is a compound represented by the following formula 1: 

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Daejeon, South Korea

Hye Yun Cha