A positive electrode plate, a negative electrode, and a battery were prepared and evaluated for the various properties as in Example 1 except that 1) a commercially available LCO-coated electrode (manufactured by Hohsen Corp.) was used as a positive electrode plate instead of the LCO sintered plate, and 2) a carbon-coated electrode on a negative electrode current collector produced by the following procedures was used as a negative electrode plate and a negative electrode current collector.

(Production of Carbon-Coated Electrode)

A carbon-coated electrode composed of a carbon layer with a thickness of 280 μm was produced by applying a paste containing a mixture of graphite as an active material and polyvinylidene fluoride (PVDF) as a binder onto a surface of the negative electrode current collector (aluminum foil), followed by drying.

A positive electrode plate, a negative electrode plate, and a battery were prepared and evaluated for the various properties as in Example 1 except that 1) a Li₄Mn₅O₁₂ pellet electrode produced with reference to the procedures disclosed in Patent Literature 3 (JP4392189B) was used as a positive electrode plate instead of the LCO sintered plate, and 2) a Li—Al alloy electrode produced with reference to the procedures disclosed in Patent Literature 3 was used as a negative electrode plate instead of the LTO sintered plate.

A positive electrode plate, a negative electrode plate, and a battery were prepared and evaluated for the various properties as in Example 1 except that the size of each component was varied so that the battery had a coin-shaped outline with a diameter of 10 mm and a thickness of 0.7 mm.