Better battery for storing solar energy?

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The sun is a huge source of energy. In just one hour planet Earth is hit by so much sunshine that humankind could cover its energy needs for an entire year if only we knew how to harvest and save it. But storing sunshine is not trivial. Now a student has researched his way to a breakthrough which may prove pivotal for technologies trying to capture the energy of the sun, and saving it for a rainy day.yLDdNxEx4mo