Electric cars could soon be powered by a sustainable battery made from shellfish.
Scientists created the device out of chitin, the major structural component of crustaceans. The substance is found in the outer casings of crabs, lobsters and shrimps, and the exoskeletons of most insects.
The study was published Thursday in the peer-reviewed scientific journal Matter, titled: “A sustainable chitosan-zinc electrolyte for high-rate zinc-metal batteries.” It was authored by a group of scientists, led by Professor Liangbing Hu, of the University of Maryland.
It is the solution to the growing need for renewable energy in the motor industry, according to the U.S. team. A biodegradable electrolyte is used in the zinc battery. It contains chitin from crab shells.
Hu said: “Vast quantities of batteries are being produced and consumed, raising the possibility of environmental problems.
“For example, polypropylene and polycarbonate separators, which are widely used in Lithium-ion batteries, take hundreds or thousands of years to degrade and add to environmental burden.”
Chitin is a natural compound known as a biopolymer. This compound is used as a biopolymer, a medicine, fungicides and fertilizers, and also in foods. Batteries use an electrolyte to shuttle ions back and forth between positively and negatively charged terminals.
It can be a liquid, paste or gel, and include flammable or corrosive chemicals. The new electrolyte is a gel comprising chitosan, a derivative of chitin.
Hu stated that chitin can be found in many sources, including cell walls and exoskeletons from crustaceans. The most abundant source of chitosan is the exoskeletons of crustaceans, including crabs, shrimps and lobsters, which can be easily obtained from seafood waste. You can find it on your table.”
About two-thirds of the battery could be broken down by microbes. The chitosan electrolyte crumbled completely within five months. It left behind the metal component zinc, rather than lead or lithium, which could be recycled.
Hu said: “Zinc is more abundant in earth’s crust than lithium. Generally speaking, well-developed zinc batteries are cheaper and safer.”
The battery has an energy efficiency of 99. 7 percent after 1,000 battery cycles. The battery could store large amounts of solar and wind energy for use in power grids. Researchers plan to make batteries more eco-friendly starting with the manufacturing phase.
Hu said: “In future, all components of batteries will be biodegradable.” Not only the material itself but also the fabrication process of biomaterials.”
Produced in association with SWNS.
This story was provided to Newsweek by Zenger News.
The post Scientists Say They’ve Created Sustainable Battery Out of Shellfish Casings appeared first on Newsweek.