Solar cells today usually drive an inverter that turns their DC output into AC, which is then used locally with any excess being dumped onto the grid. Ohio State, on the other hand, thinks a better way is to integrate a DC battery with the each solar cell, thus generating and storing the energy in one easy step. Their most recent iteration of this project integrates an aqueous lithium-iodine flow battery with die-sensitized solar cells, thus creating a solar cell plus battery in a unit that both generates and stores solar energy.
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from electronic for robot http://ift.tt/1IOpxCq
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