NOVELTY - Lithium battery binder composition comprises: a cellulosic polymer having a functional group including a lithium ion; an inorganic particle; and an organic solution in which lithium salt is dissolved.    USE - The lithium battery binder composition is useful in lithium battery comprising (claimed).    ADVANTAGE - The lithium battery binder composition: improves the binding strength between anode layer and electrolyte, thus improving the ion conductivity of the anode and improving the performance of the lithium battery; improves movement of lithium ions in the electrode; and exhibits high ion conductivity, flexibility and mechanical strength.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) manufacturing the lithium battery binder composition, comprising manufacturing a lithium ion polymer of formula (I) by a substitution reaction of cellulosic polymer, and mixing the lithium ion polymer, an inorganic particle and an organic solution; and    (2) a lithium battery (1) comprising a cathode (10) comprising a cathode collector (13) and a cathode layer (11) on the cathode collector, an anode comprising an anode collector and an anode on the anode collector, where the anode is spaced apart from the cathode and faces the cathode, and an electrolyte (20) disposed between the cathode and the anode, where at least one of the cathode layer, anode layer and electrolyte comprises a cellulosic polymer derivative and the cellulosic polymer derivative comprises a functional group including a lithium ion.    R = -C(=O)-CH3, -(CH2-CH(CH3)-O-)x-H, -C(=O)-CH2-CH2-CH3, -C(=O)-CH2-CH3 or -CH2-C(=O)-ONa;    R1 = SO3-Li+, SO2-C6H4-COO-Li+, C6H3(SO2NH2)-COO-Li+, CH(COO-Li+)-CH2-COO-Li+, C6H3(OH)-COO-Li+, C6H2(NO2)2-COO-Li+, CH2-C(CH3)2-COO-Li+, Si(CH3)2-(CH2)x-C(CF3)2-(CF2)yCOO-Li+, Si(CH2)x-C(CF3)2-(CF2)y-SO3+Li+, Si(CH2)x-C(CF3)y-COO-Li+, Si(CF3)2(CF2)y-SO3-Li+, Si(CF3)2-(CF2)y-COO-Li+, Si(CF2)y-SO3-Li+ or Si(CF2)y-COO-Li+;    x, y = 1-10; and    n = 100-10000.    DESCRIPTION OF DRAWING(S) - The figure shows a cross sectional view of the lithium battery.    Lithium battery (1)    Cathode (10)    Cathode layer (11)    Cathode collector (13)    Electrolyte (20)