To make renewables more competitive, the US Department of Energy has set a goal of developing ...

As renewable but intermittent sources like wind and solar continue to account for a larger part of our energy needs, flow batteries shape up as a very promising storage solution. These devices hold energy in fluids inside external tanks, but one thing holding them back is the expensive metals used as electrolytes, which to make things worse, require expensive parts to deal with the aggressive chemistry inside. Harvard scientists are claiming to have found a solution to both, in the form of a non-toxic flow battery that keeps its energy in organic molecules dissolved in neutral water.

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Continue Reading Long-lasting flow battery uses neutral water to keep costs low

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