NOVELTY - The gel-form polymer electrolyte is formed by dispersing particle-form polymer(s) (12b) into a matrix polymer (12a), with polymers (12a,12b) differing in structure. The gel-form polymer electrolyte main component (12) comprising gel-form polymer electrolyte and electrolyte liquid is interposed between positive and negative electrode sheets (11,13).    USE - For a lithium polymer battery (claimed).    ADVANTAGE - The gel-from polymer electrolyte has improved ionic conductivity without impairing the mechanical strength. The difference in the coefficient of thermal expansion with respect to temperature fluctuation, is stable as the particle-form and matrix polymers are polymeric resins.    DETAILED DESCRIPTION - The gel-form polymer electrolyte is formed by dispersing particle-form polymer(s) (12b) into a matrix polymer (12a), with polymers (12a,12b) differing in structure. The gel-form polymer electrolyte main component (12) comprising gel-form polymer electrolyte and electrolyte liquid is interposed between positive and negative electrode sheets (11,13). The matrix polymer is a copolymer such as a polyvinylidene fluoride or polyvinylidene fluoride-hexafluoropropylene copolymer. The particle-form polymer is a polymer such as a polyvinylidene fluoride, polyvinylidene fluoride-hexafluoro propylene copolymer or a graft polymer such as polyvinylidene fluoride graft polymer of acrylic acid and/or methacrylic acid or polyvinylidene fluoride-hexafluoropropylene copolymer grafted with acrylic acid and/or methacrylic acid. The electrolyte liquid is chosen from diethyl carbonate, ethylene carbonate, propylene carbonate, methyl ethyl carbonic acid, dimethyl carbonate and/or gamma-butyrolactone.    INDEPENDENT CLAIMS are also included for the following:    (1) lithium polymer battery; and    (2) manufacturing method of gel-form polymer electrolyte.    DESCRIPTION OF DRAWING(S) - The figure shows the longitudinal cross-sectional view of the lithium polymer battery containing the gel-form polymer electrolyte. (Drawing includes non-English language text).    lithium polymer battery (10)    positive electrode sheet (11)    gel-form polymer electrolyte (12)    matrix polymer (12a)    particle-form polymer (12b)    negative electrode sheet (13)