NOVELTY - An electrolyte composition comprises a polysiloxane having a structure of specific formula as repeating unit. The polysiloxane has liquid crystal property.    USE - For electrochemical cell, photo electrochemical cell and non-aqueous secondary battery (all claimed). The secondary battery is used for electrode chemical sensor, opto-electric chemical sensor and camera.    ADVANTAGE - The electrolyte composition has excellent charge transport property, durability and ionic conductivity. The electrolyte composition does not volatilize substantially. The electrolyte composition improves durability, cycle property and photoelectric conversion property of electrochemical cell, photo electrochemical cell and non-aqueous secondary battery.    DETAILED DESCRIPTION - An electrolyte composition comprises a polysiloxane having a structure of specific formula (I) as repeating unit. The polysiloxane has liquid crystal property.    INDEPENDENT CLAIMS are included for the following:    (1) electrochemical cell, which contains electrolyte composition;    (2) photo electrochemical cell, which has electric charge carrying layer comprising electrolyte composition on an electroconductive support, and photosensitive layer comprising semiconductor sensitized with pigment and a counter electrode;    (3) non-aqueous secondary battery, which contains electrolyte composition; and    (4) liquid crystal property polysiloxane, which has a structure of formula (1a) as repeating unit.    R1 and R2 = alkyl or alkoxy;    L1 and L2 = divalent connection group or single bond;    X = mesogenic group, at least R1, R2, L1, L2 and/or X has ionic substituents; and    a = 1 or more;    L1 and L2 in formula (1a) = 1-24C alkylene or alkylene oxy, or single bond;    Q1 and Q2 = bivalent connection group or bivalent single bond;    Y = bivalent 4-7 member ring substituent or fused-ring substituent;    n = 1 or more; and    b = 1-3.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic diagram of sheet type lithium secondary battery.