Nature uses organic molecules as an effective energy storage system
Lignin can be found in every plant, being responsible for its rigidity. It is mainly extracted from wood or straw. Lignin is generated in the pulp and paper production as waste product in large amounts.
Lignin as raw
material for batteries
Lignin is a renewable resource and the largest natural source of aromatic compounds from which efficient electrolytes can be manufactured. A few kilograms of a suitable organic electrolyte store 1 kWh of capacity.
In the biosphere, billions of tons of lignin grow annually. In the pulp industry alone, about 50 million tons of lignin are produced industrially worldwide each year, but most of it is incinerated because there is no profitable utilization.