Smaller,
cheaper battery's energy density exceeds other flow batteries
(Feb.25, 2015) Ensuring the power grid keeps the lights on in large cities
could be easier with a new battery design that packs far more energy than any
other battery of its kind and size.
The new zinc-polyiodide redox flow battery, described in
Nature Communications, uses an electrolyte that has more than two times the
energy density of the next-best flow battery used to store renewable energy and
support the power grid. And its energy density is approaching that of a type of
lithium-ion battery used to power portable electronic devices and some small
electric vehicles.