Towards a battery revolution with crabs?

Towards a battery revolution with crabs?

Towards a battery revolution with crabs?

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[EN VIDÉO] Batteries that recycle nuclear waste
Researchers at the University of Bristol have developed a new technology that uses nuclear waste to generate electricity in a battery of man-made diamonds. When bombarded with beta particles resulting from the disintegration of the carbon 14 that constitutes it, it generates an electric current for several thousand years. A low current, but which could be very useful for certain applications. (in English) © University of Bristol

the nerve mobility is the battery. There are those of smartphones, linked clocksof the tablets, wireless accessories and those of electric cars. All of these batteries have one thing in common, they are difficult to make to recycle and components, such as lithium, they are expensive. To address both ecological and cost concerns, the researchers of the Center for Materials Innovation of the University of Maryland in the United States came up with the idea of ​​using the shells of shellfishand in particular Crabsto create a battery.

Why shellfish? Why the solid shielding of crab and other crustaceans chitin. It is a biopolymer that is also found in the shell of some insects and also in the structure of mushrooms. It is he who comes to strengthen them exoskeleton. This transformed substance is also already used under the name of chitosan for many app commercial. It is used, for example, in the form of diet pills. It doesn’t actually work at all, but these pills would still have the benefit of being able to reduce the harm cholesterol. As for the batteries, it is by modifying the chitosan by dipping it in a water solution fromacid acetic that scientists made it into a gel. It is this particular gel, mixed with zinc which can act as the battery electrolyte.

Biodegradable in five months

During their experiments, the researchers were able to observe that with this type of mixed electrolyte, the battery had an energy efficiency that was maintained at 99.7%, even after 1,000 cycles of discharge recharging, which is a duration of use of 400 cumulative hours for this prototype. This is in regards to performance.

As for the ecological aspect, they also noted that the battery could biodegrade almost completely after five months. Only the zinc residues remained which could be recycled. The same type of experiment had already been experimented with a pile of paper, as already reported Future.

In this case, the cell had completely biodegraded within a month. But these crustacean-animated batteries have other resources as well. They do not overheat, turn on they do not and do not present any risk of explosion. Finally, and provided they are not made with lobster shells, their production cost is much lower than that of lithium ion batteries. As explained in his book by Liangbing Hu, the director of the research center at Mylance University press releasechitosan can be obtained simply from waste of neglected seafood on our table.

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