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Power dense zinc-manganese power unit as cheap as a car battery
The creators claim that the new battery could become an inexpensive, ecologically-sound alternative for storing energy from renewable sources and a high-density solution for storing excess energy from the power grid.
Working at the Department of Energy's Pacific Northwest National Laboratory (PNNL), the researchers discovered a new way to approach the reliability problems of zinc-manganese batteries, that were cheap and easy to make from abundant materials, but which would fail after only a few charge cycles.
"The idea of a rechargeable zinc-manganese battery isn't new; researchers have been studying them as an inexpensive, safe alternative to lithium-ion batteries since the late 1990s," said PNNL Laboratory Fellow Jun Liu. "But these batteries usually stop working after just a few charges. Our research suggests these failures could have occurred because we failed to control chemical equilibrium in rechargeable zinc-manganese energy storage systems."