SEPARATOR, ELECTRICAL APPARATUS CONTAINING SUCH SEPARATOR, AND PREPARATION METHOD THEREOF

This application provides a separator, an electrical apparatus including the separator, and preparation methods thereof. The separator includes a coating layer containing an organic-inorganic hybrid composite compound and provides improved performance in a number of aspects, and the organic-inorganic hybrid composite compound is formed by periodically assembling, along at least one spatial direction, basic units expressed by formula I. This application further provides a battery and electrical device containing such separator, preparation methods thereof, organic-inorganic hybrid composite compound for improving performance of a separator. Lx(MaCb)y•Az formula I