TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Material: The first active material is spinel lithium manganese oxide, lithium manganese oxide, their respective derivatives, or Li1+aMn2-bNbO4. The second active material is lithium cobalt oxide, lithium nickel oxide, and their respective derivatives, LiCo1-xMxO2 or LiNi1-yMyO2.a = 0.15;b = 0-0.5;N = Mg, Ca, Sr, Ba, Ti, Cr, Fe, Co, Ni, Cu, or Al;x = 0.0.2;y = 0-0.5;M = Mg, Ca, Sr, Ba, Ti, Cr, Fe, Co, Ni, Cu, Mn, or Al.Preferred Parameter: The single sided thickness of the first and second coating layers is 0.02-0.15 (preferably 0.05-0.12) mm and 0.1-0.06 (preferably 0.02-0.04) mm, respectively. The sum of the single sided thicknesses of the two layers is 0.08-0.20 (preferably 0.08-0.16) mm.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Material: The first active material is spinel lithium manganese oxide, lithium manganese oxide, their respective derivatives, or Li1+aMn2-bNbO4. The second active material is lithium cobalt oxide, lithium nickel oxide, and their respective derivatives, LiCo1-xMxO2 or LiNi1-yMyO2.a = 0.15;b = 0-0.5;N = Mg, Ca, Sr, Ba, Ti, Cr, Fe, Co, Ni, Cu, or Al;x = 0.0.2;y = 0-0.5;M = Mg, Ca, Sr, Ba, Ti, Cr, Fe, Co, Ni, Cu, Mn, or Al.Preferred Parameter: The single sided thickness of the first and second coating layers is 0.02-0.15 (preferably 0.05-0.12) mm and 0.1-0.06 (preferably 0.02-0.04) mm, respectively. The sum of the single sided thicknesses of the two layers is 0.08-0.20 (preferably 0.08-0.16) mm. EXAMPLE - Spinel lithium manganese oxide for the first coating layer was coated onto the current collector. The single sided thickness of the first coating layer was 0.100 mm. The first coating layer was heat dried. Lithium cobalt oxide for the second coating layer was coated onto the first coating layer. The single sided thickness of the second coating layer was 0.020 mm. The second coating layer was heat dried, pressed, and cut to give the positive electrode slice. The winding style lithium rechargeable battery used for testing the properties of the positive electrode uses the positive electrode slice; negative electrode slice; lithium hexafluorophosphate as electrolyte; mixture of organic solvents of methyl carbonate, ethanediyl ester carbonate, and diethyl carbonate at 1 mol/l concentration as solvent; and polyethylene and polypropylene compound micro-pore separation membranes. Evaluation results showed that the capacity residual rate after 100 high temperature cycles was 86% and no detectable of manganese sedimentation on the negative electrode.