| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymer electrolyte battery with large capacity density, by properly specifying porosity of electrodes. SOLUTION: In an organic electrolyte battery equipped with a pair of electrodes each comprising an active-material mixture layer including a polymer and a current collector for bearing the active-material mixture layer, a porous separator made of a polymer, and an organic electrolyte held by the electrodes and the separator, porosity of the active-material mixture layers is adapted to be 30 to 60%. Preferably, porosity of the positive-electrode active-material mixture layer ranges from 40 to 55% while porosity of the negative-electrode active-material mixture layer from 35 to 45%. Change of discharge capacity is shown corresponding to changed porosity of a positive-electrode active material under the condition of constant porosity of a negative-electrode active material in a polymer electrolyte battery. |
