The battery is free of heavy metals and all of the used materials are easily available and non-toxic, they said.

The development project is currently in the stage of finding ways to increase the battery’s performance while preserving its positive characteristics, associate professor Dr Tibor Nagy said in the statement.

Additionally, work is being done to connect the cells in order to boost the battery’s voltage output. The researchers have published details of their findings in the Journal of Energy Storage.

Photo courtesy: Debrecen University