NOVELTY - An ionic conduction structural component has an cross-linked structure comprising a polymer matrix, a solvent as a plasticizer and an electrolyte. The polymer matrix comprises a polymer chain comprising a specific segments.    USE - For manufacture of secondary battery (claimed).    ADVANTAGE - Ionic conduction structural component is produced by a simple method at a low cost, and is free from lowering in ionic conductivity even at a low temperature. The component has high ionic conductivity and excellent mechanical strength, and provided secondary battery having high capacity in use at low temperature and good performance of cycle life.    DETAILED DESCRIPTION - An ionic conduction structural component has an cross-linked structure comprising a polymer matrix, a solvent as a plasticizer and an electrolyte. The polymer matrix comprises a polymer chain comprising a segment of formula (1) and a segment of (2). The main chain portion (101) of the polymer chain and the side chain portion (102) of the segment (1) have an orientation property.    R1,R2,R4,R5 = H, alkyl group of 2 or less carbon atoms;    R3 and R6 = alkyl group of 4 or less carbon atoms;    A and B = one comprises a group of formula: -(CH2-CH2-O)m- and the other comprises -(CH2-CH(CH3)-O)n-, and A and B each forms a block;    X = -(CH2-CH2-O)k-;    m and n = 3 or more; and    k = 1 or more.    INDEPENDENT CLAIMS are also included for the following:    (1) method of producing an ionic conduction structural component comprising polymer matrix, solvent as plasticizer and an electrolyte, which involves mixing a monomer of formula (3 and 4) with solvent and electrolyte, and subjecting the resulting mixture to a polymerization reaction to prepare a polymer matrix; and    (2) secondary battery which comprises an ionic conductor between a anode comprising an active material layer and a cathode comprising an active material layer provided in opposition to each other. The ionic conduction structural component is used as the ionic conductor and is disposed such that the ionic conductivity is higher in a direction connecting a surface of the cathode and a surface of the anode; and (iii) method of producing a secondary battery which involves steps of forming ionic conduction structural component (as ionic conductor) by the method of producing an ionic conduction structural component, disposing the ionic conduction structural component such that the ionic conductivity is higher in a direction connecting a surface of the negative electrode and a surface of the positive electrode.    R1-R6,A and B,X,m and n,k = same as defined above.    (ii)    DESCRIPTION OF DRAWING(S) - The figure shows the schematic view of the polymer structure of the ionic conduction structural component. (Drawing includes non-English language text).    Main chain portion (101)    Side chain portion (102)    Crosslinked bond (103)    Ionic conduction path (104)    Polyethylene oxide group (-(CH2-CH2-O)m-) (106)    Polypropylene oxide group(-(CH2-CH(CH3)-On-) (107)    Ethylene oxide groups (108)