Abstract: An electrical energy storage device for a solar cell includes at least one electrode substrate coated with a oxide or mixed oxides layer. When the electrical energy storage device is electrically connected with a receive unit of the solar unit in parallel, the electrical energy storage device can have the advantages of high electric energy density, enhancing the charging efficiency of the solar cell, and reducing the charging time of the solar cell.

Abstract: An electrical energy storage device for a solar cell includes at least one electrode substrate coated with a oxide or mixed oxides layer. When the electrical energy storage device is electrically connected with a receive unit of the solar unit in parallel, the electrical energy storage device can have the advantages of high electric energy density, enhancing the charging efficiency of the solar cell, and reducing the charging time of the solar cell.

Abstract: An athletic shoe system includes an athletic shoe having an upper, one or more insert pads attached to a region of the upper, and one or more cover pads having substantially the same dimensions as at least one of the insert pads. Each of the one or more insert pads includes a first part of a releasable attachment system. Further, each of the one or more cover pads includes a second part of the releasable attachment system on a lower surface and an ornamental decoration on an upper surface. The cover pads are arranged to be releasably attached to the one or more insert pads using the releasable attachment system. Accordingly, an ornamentation of the athletic shoe is customized by interchanging the cover pad(s) releasably attached to the athletic shoe.