NOVELTY - An additive comprises ethylene carbonate based compound of (A) or (B) (I).    USE - Additive for use in organic electrolyte solution that is utilized in lithium battery (all claimed), which is utilized in hybrid vehicles such as plug-in hybrid electric vehicles, and power storage such as electric bicycles and power tools.    ADVANTAGE - The organic electrolyte solution is capable of forming an solid electrolyte interface having improved stability and low resistance, which increases the lifespan and discharge capacity of the lithium battery.    DETAILED DESCRIPTION - An additive comprises ethylene carbonate based compound of formula (A) or (B) (I).    R1-R4 = nonpolar functional group or polar functional group, where the polar functional group comprises one or more heteroatoms belonging to groups 13-16 of the periodic table of elements such as oxygen, nitrogen, phosphorus, sulfur, silicon or boron, and one or more of R1, R2, R3, and R4 are polar functional groups polar functional group comprises e.g. -C(=O)OR9, -OC(=O)R9, -OR9, -OC(=O)OR9, -R8OC(=O)OR9, -C(O)R9, -R8C(=O)R9, -OC(=O)R9, -R8OC(=O)R9, -C(=O)-O-C(=O)R9, -R8C(=O)-O-C(=O)R9, -SR9, -R8SR9, -SSR8, -R8SSR9, -S(=O)R9, -R8S(=O)R9, -R8C (=S)R9, -R8C(=S)SR9, -R8SO3R9, -SO3R9, -NNC (=S)R9, -R8NNC(=S)R9, -C(O)N(R12)(R13), -R11C(O)N(R12)(R13), -N(R12)(R13), -R11N(R12)(R13), -OC(O)N(R12)(R13), -R11OC(O)N(R12)(R13), -SR12(=O)2, -R11SR12(=O)2, -OSR12(=O)2, -R11OSR12(=O)2, -OSOR12(=O)2, -R11OSOR12(=O)2, -B(R12)(R13), -R11B(R12)(R13), -R11B(OR12)(OR13), -B(OR12)(OR13), -N(R12)-C(=O)-R13, or -R11N(R12)-C(=O)-R13;    R8, R11 = 1-20C alkylene, 2-20C alkenylene 2-C20 alkynylene, 3-12C cycloalkylene, 5-40C arylene or 7-15C aralkylene(all optionally substituted with halogen); and    R9, R12, R13 = H, halogen, 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 3-12C cycloalkyl, 5-40C aryl or 7-15C aralkyl (all optionally substituted with halogen).    INDEPENDENT CLAIMS are also included for the following:    (1) an organic electrolyte solution comprising a lithium salt, an organic solvent and the additive    (2) a lithium battery comprising a cathode, an anode, and the organic electrolyte solution.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a lithium battery.    Lithium battery (1)    Anode (2)    Cathode (3)    Separators (4)    Battery case (5)