| 摘要 |
PURPOSE:To eliminate voltage drop in the initial discharge stage, specially large voltage drop instantaneously developed just after discharge starts even in high rate discharge of a battery stored at high temperature or stored for a long time by adding an oxygencontaining organic silane compound to an electrolyte. CONSTITUTION:An oxygen-containing organic silane compound is added to an electrolyte 4. The organic silane compound is taken into the surface of a lithium negative electrode 1, and a lithium chloride film formed on the surface is made coarse. Charge transfer from lithium metal of the negative electrode 1 and diffusion of lithium ions from the negative electrode 1 to the electrolyte 4 are not disturbed by the lithium chloride film even in high rate discharge of a battery stored at high temperature or stored for a long time. Activation polarization and concentration polarization are thereby decreased. Voltage drop in the initial discharge stage, especially large voltage drop instantaneously developed just after discharge starts are prevented. |
