TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The electrolyte salt is alkali-metal salt, quaternary-ammonium salt, quaternary phosphonium salt and/or transition-metal salt consisting of proton acid, preferably lithium salt. The solid-polymer electrolyte battery has solid-polymer electrolyte (E1 or E2), the electrode, and further electroconductive material. The electrodes are anode, and cathode or alkali metal. The electrode further contains electrolyte salt.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The electrolyte salt is alkali-metal salt, quaternary-ammonium salt, quaternary phosphonium salt and/or transition-metal salt consisting of proton acid, preferably lithium salt. The solid-polymer electrolyte battery has solid-polymer electrolyte (E1 or E2), the electrode, and further electroconductive material. The electrodes are anode, and cathode or alkali metal. The electrode further contains electrolyte salt.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The copolymer has repeating unit (c) derived from polymerizable unsaturated monomer different from repeating units (a,b). The repeating unit (c) is of formula (III or IV).R10-R12,R13=same as defined above;R14-R16=R1; andR17=1-12C alkyl, aryl, alicyclic hydrocarbon or heterocyclic ring group.The repeating units (a-c) are bonded with block copolymer. The copolymer has repeating units of formulae (XXX, XXXI, XXXII and XXXIII).R50-R52, R55-R57, R63-R65=R6;R53=1-6C linear or branched alkylene group or 3-10C bivalent alicylic hydrocarbon group;R54=R5;n=same as defined above;R58=R13;R59-R61=R1;R62=R17; andq=1-3.At least one repeating unit of formula (XXX,XXXI,XXXII and XXXIII) is coupled with block copolymer. The solid-polymer electrolyte contains crosslinked polymer obtained by reacting copolymer (C) and crosslinking agent, or polymer (A1) or crosslinking agent and electrolyte salt. The copolymer (C) comprises block chain (A) having repeating unit of formula (I), block chain (B1) having repeating unit of formula (II), block chain (B2) having repeating unit same or different from repeating unit of formula (II), block (C1) having repeating unit of formula (III), and block chain (C2) having repeating unit same or different from the repeating unit of formula (III), arranged at the order of B1, C1, A1, C2 and B2. B1, C1, A and C2, and B2 are arranged with B1-C1-A-C2-B2 bond. The repeating unit of formulae (II) is preferably a repeating unit of formulae (V-VIII).R22-R24=H or 1-10C hydrocarbon group;p=1-3;R181, R191, R201, R281, R291, R301=R1, and R181 and R201 couples to form ring, and R281 and R301 optionally couples to form a ring;R212=H or 1-4C alkyl group;R31=H or group of formula: -R411-CO2H;R18-R20=R1; andR21,R211,R411=1-6C alkylene, 6-10C bivalent aromatic hydrocarbon, 3-10C bivalent alicyclic hydrocarbon, or bivalent organic group.The copolymer has microphase-separation structure, preferably network-type microphase-separation structure. The crosslinking agent is polyisocyanate compound having 2 or more isocyanate group, or epoxy compound having 2 or more epoxy group, preferably epoxy hardener. Repeating unit of formula (II) is derived form (meth)acrylic acid derivative having epoxy group. The crosslinking polymer has urethane bond derived form crosslinking agent. The electrode contains copolymer having block chain (A11) having repeating unit of formula (XX), block chain (B11) having repeating unit of formula (XXI) and block chain (C11) arranged in the order of B11, A11, and C11. The block chain (C11) is of formula (XXII).R1a-R3a=R1;R4a1, R4b1=R4a;R5a=R5;m1=m;R6a-R8a, R10a-R12a=R6;R9a=aryl group; andR13a=aryl or heteroaryl group.The block chains (B11, A11 and C11) are coupled by B11-A11-C11 bond. The ionic-conductive film contains polymer having microphase separation structure, preferably network-type microphase separation structure.Preferred Composition: The solid-polymer electrolyte composition contains copolymer (C) (in mol) (5 or more), and further crosslinking agent (0.01-2) with respect to copolymer (1) having repeating unit (b). The solid-polymer electrolyte composition preferably contains crosslinking agent (0.1-1) with respect to copolymer (1) having repeating unit (b). The solid-polymer electrolyte composition contains polymer (A1), crosslinking agent and electrolyte salt. The composition has repeating unit (c) (in mol) (5 or more). Number of moles of repeating unit of formula (I) in copolymer (C) is 5-99% with respect to total number of moles of repeating unit in copolymer (C), preferably 9.9-80%. Number of moles of repeating unit of formula (II) in copolymer (C) is 1-95% with respect to total number of moles of repeating unit in copolymer (C), preferably 0.1-50%. Number of moles of repeating unit of formula (XXX) in copolymer (C) is 5-99% with respect to total number of moles of repeating unit in copolymer (C). Number of moles of repeating unit of formula (XXXIII) in copolymer (C) is 1-95% with respect to total number of moles of repeating unit in copolymer (C). Number of repeating unit (C) in copolymer (C) is 5-99% with respect to total number of repeating unit of formula (III or XXXIII) in the copolymer), preferably 19.9-90%. The usage amount of crosslinking agent in the solid-polymer electrolyte is 0.01-2 mol with respect to 1 mol of repeating unit of formula (II), preferably 0.1-1 mol. The solid-polymer electrolyte composition contains crosslinking polymer obtained by reacting polymer (A1) with the crosslinking agent, and electrolyte salt. The electrode contains copolymer having block chain (A11) having repeating unit of formula (XX) (in mol) (10 or more), block chain (B11) (5 or more) having repeating unit of formula (XXI) and block chain (C11) (5 or more) arranged in the order of B11, A11, and C11. The molar ratio of repeating unit of formula (XX), and sum total of repeating units of formulae (XXI, c) is 1/30-30/1. The molar ratio of repeating unit of formula (XX), and sum total of repeating unit of formulae (XXI, XXII) is 1/30-30/1. The electrode contains copolymer (C) and electrolyte salt (in weight%) (0.5-15). The copolymer has repeating unit (b) (in mol) (5 or more), and repeating unit (c) (5 or more). The copolymer has repeating unit of formula (XXX) (5 or more), and repeating unit of formula (XXXI and/or XXXII) (5 or more). Number of moles of repeating units of formulae (XXX, XXXI, XXXII) is 5-99% with respect to total number of moles of repeating unit in copolymer.Preferred Properties: The copolymer (C) has number average molecular weight of 5000-1000000, and polymerization degree of 5 or more. Preferred Definitions:    R9 = organic group having carboxyl group;    m1 of formula (XX) = 5-100, preferably 10-100; and    R13a of formula (XXII) = acryl group.    EXAMPLE - 1 mmol of n-butyl lithium was added to tetrahydrofuran (in g) (300), and maintained at -78degreesC. Styrene (St) (48 mmol) was further dripped into the resulting mixture, and reacted for 30 minutes, to obtain poly(St-b-HEMA-b-PME-400). Methanol was added to retard the reaction, and extracted to obtain monodispersed polymer of polystyrene having number average molecular weight (Mn) of 5000, and molecular weight distribution (Mw/Mn) of 1.05. 2-trimethyl-silyl oxyethyl methacrylate (HEMASi) (38 mmol) purified by silylating 2-hydroxyethyl methacrylate (HEMA) using trimethyl-silyl chloride, and diphenyl ethylene (1 mmol) were added, mixed, dripped into reaction mixture, and copolymerized for 30 minutes, to monodispersed polymer of poly(St-b-HEMASi). PME-400 (methoxy polyethyleneglycol monomethacrylate) (81 mmol) which performs purification was dripped into the reaction mixture, and reacted. Methanol was added to retard the reaction, and to obtain monodispersed polymer of poly(St-b-HEMASi-b-PME-400). The obtained polymer had Mn of 5300, and Mw/Mn of 1.11. The obtained product was desilylated, Carplex#1120 (acid adsorption agent) was added to the reaction liquid, filtered, and volatile matter was removed, to obtain monodispersed polymer of copolymer having poly(St-b-HEMASi-b-PME-400) structure of 54% and HEMA repeating unit of 20%. The obtained copolymer had Mn of 50500, and Mw/Mn of 1.11. The obtained copolymer (2) and tolylene-2. 4-diisocyanate (0.13), were dissolved in acetone (20 ml). LiClO4 (0.15) was added to the obtained solution, and dissolved uniformly to obtain solid-poly electrolyte composition. The obtained composition was flow-spread on Teflon board, and dried, to form uniform solid-electrolyte film having film thickness of 100 microns. The solid-electrolyte film had ionic conductivity of 6x10-5 S/cm, and dynamic viscoelasticity of 3 MPa at 23degreesC. The solid-electrolyte battery having solid-polymer electrolyte, anode and cathode, was formed. The solid-electrolyte battery had favorable charging and discharging characteristic.