Abstract: The present invention relates to a compound capable of lowering the flammability of a non-aqueous electrolyte when included in the non-aqueous electrolyte and improving the life properties of a battery by forming an electrode-electrolyte interface which is stable at high temperatures and low in resistance, and relates to a compound represented by Formula I descried herein, a non-aqueous electrolyte solution and a lithium secondary battery both including the compound, n, m, Ak, and X are described herein.

Abstract: The present invention relates to a wheel cover which does not rotate and which is maintained stationary when a driving wheel of a vehicle rotates. The wheel cover for a vehicle according to the present invention comprises: a rotating member mounted on the driving wheel of the vehicle so as to rotate together with the driving wheel when the driving wheel rotates; a first fixing member which is connected to the rotating member such that the first fixing member is independently rotatable, and which is provided with a deceleration weight; and a second fixing member such that the second fixing member is independently rotatable, and which is provided with an advertisement unit. The first fixing member attenuates the rotating force being transferred to the second fixing member to thereby prevent the second fixing member from rotating during the rotation of the rotating member.