Anode and battery

摘要

A battery capable of obtaining superior cycle characteristics and safety is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an insulative coat on an anode active material layer provided on an anode current collector. The coat contains an insulating material such as a meal hydroxide and a metal oxide. The coat is in a form of plate divided into a plurality of portions. The insulation property of the coat prevents internal short circuit. A plurality of portions of the coat prevent separation of the anode active material layer and decomposition of the electrolytic solution. Further, even when short circuit occurs, heat generation is prevented by heat absorption characteristics of the coat.

主权项

1. An anode comprising:
an anode current collector; an active material layer on the anode current collector; and an insulative coat on the anode active material layer, wherein,
the insulative coat is divided into a plurality of spaced apart portions across an outer surface of the anode active material layer and is configured to provide a migration path for an electrode reactant to the active material layer between the portions, andthe insulative coat comprises (a) at least one of a metal hydroxide selected from the group consisting of aluminum hydroxide (Al(OH)3 zirconium hydroxide (Zr(OH))4), and titanium hydroxide (Ti(OH)4), and (b) at least one of a metal oxide selected from the group consisting of aluminum oxide (Al2O3), zirconium oxide (ZrO2), and titanium oxide (TiO2).