Sustainable batteries made from crab and lobster could be the future of renewable energy

Sustainable batteries made from crab and lobster could be the future of renewable energy

Sustainable batteries made from crab and lobster could be the future of renewable energy

A team of researchers has discovered how to use the exoskeleton of crustaceans to produce chitosan, which can be used to make electrolytes for batteries with less environmental impact and biodegradability.

Crab shells can be used to make more environmentally friendly and biodegradable batteries
Crab shells can be used to make more environmentally friendly and biodegradable batteries

Advances in renewable energies and electric vehicles are The demand for batteries is increasingWhich are not always sustainable, but a group of American scientists found a solution crab shells.

This is a durable battery Made with zinc and a biodegradable electrolyte extracted from the shells of these crustaceansas published matter.

Batteries are used in a Electrolyte to transport ions between positively and negatively charged poleswhich can be liquid, paste or gel, for which many batteries use flammable or corrosive chemicals.

Additionally, the polypropylene and polycarbonate separators widely used in lithium-ion batteries take hundreds or thousands of years to degrade and will increase the load on the environmentAccording to Liangbing Hu of the University of Maryland and study author.

Biological material chitosan

The new cell, which the team says can store energy from large-scale wind and solar sources, uses a The gel electrolyte is made from a biological material called chitosan.

Hu explained that it was A product derived from chitinwhich comes from many sources such as fungal cell walls, crustacean exoskeleton and squid feathers.

The The most abundant source of chitosan is the exoskeletons of crabsIncluding crabs, shrimps and lobsters, which are easily obtained from shellfish waste.

Two-thirds of the pile can be broken down by microbes

Biodegradable electrolyte means that approx Two-thirds of the pile can be broken down by microbes. A battery using this battery completely degrades within five months, leaving only the metallic component, in this case zinc, rather than lead or lithium, which can be recycled.

The Zinc is more abundant in the Earth’s crust than lithium And “in general,” “well-developed” batteries that use this component are “cheaper and safer,” the researcher said.

“In the future, I hope that all battery components will be biodegradable,” they say. “Not only the material itself, but also the process of producing biomaterials.”

is Zinc chitosan battery has energy efficiency of 99.7% after 1000 battery cycles“Which makes it a viable option for storing energy generated by wind and solar power for feeding into electrical grids.”

Deutsche Welle

Source: La Nacion

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