NOVELTY - A composition (C1) comprises a silane compound.    USE - In an organic electrolyte solution; in a lithium battery (all claimed).    ADVANTAGE - The organic electrolyte solution using the composition prevents direct contact between the metal active material and the electrolyte; prevents reductions in the conduction properties of lithium ions; prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging; improves charge/discharge properties; improves the stability, reliability, and charge/discharge efficiency of the battery.    DETAILED DESCRIPTION - A composition (C1) comprises a silane compound of formula R1-(Si((CH2-SiR3R5)q-R4)((CH2-SiR6R8)p-R7)-(A1)n-O)m-R2 (I).    n=1-20;    m=1-10;    p and q=0 or 1;    R1, R3, R4, R5, R6, R7 and R8=unsubstituted 1-20C alkoxy, halogen substituted 1-20C alkoxy, unsubstituted 1-20C alkyl, halogen substituted 1-20C alkyl, unsubstituted 6-30C aryl, halogen substituted 6-30C aryl, unsubstituted 2-30C heteroaryl or halogen substituted 2-30C heteroaryl;    R2=unsubstituted 1-20C alkyl or halogen substituted 1-20C alkyl;    A1=polar repeating unit selected from 1-5C oxyalkylene, carbonyl or -CH2-C(R9)-C(=O)-OR9-;    R9=H, unsubstituted 1-20C alkyl or halogen substituted 1-20C alkyl.    Provided that at least one of R3, R4, R5, R6, R7 and R8 is selected from unsubstituted 1-20C alkoxy or halogen substituted 1-20C alkoxy. INDEPENDENT CLAIMS are included for the following:    (1) an organic electrolyte solution (S1) comprising a lithium salt, an organic solvent containing a high dielectric constant solvent and a low boiling point solvent, and silane compound (I);    (2) a lithium battery (1) comprising a cathode (2), an anode (3), and the organic electrolyte solution (S1).    DESCRIPTION OF DRAWING(S) - The figure shows a schematic perspective view of a lithium battery.    Lithium battery (1)    Cathode (2)    Anode (3)    Separator (4)    Battery case (5)    Cap assembly. (6)