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19 Feb 2019, 13:39
Kerstine Appunn

Researchers use eggshells in energy storage device

Clean Energy Wire

Discarded chicken eggshells can be used in electro-chemical energy storage systems, an international group of researchers has found. Maximilian Fichtner from the Karlsruhe Institute for Technology (KIT) together with Australian researchers used a powder created from eggshells as an electrode with a metallic lithium anode and tested it through over 1,000 charge and discharge cycles, maintaining a capacity of 92 percent.

Germany's rapidly rising share of weather-dependent renewable energy makes the country a testbed for storage technologies, to enable its use when there is no sun or wind. At the same time, concerns over the environmental impact of battery production have also been increasing. Rising demand for batteries to power electric cars has led Germany’s energy ministry to pursue domestic battery production. A decision on where such an industry could be set up is pending.

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