The researchers say it has successfully built an energy storage device that can withstand hammering more than 40 times and is not as flammable as a lithium-ion battery.
"Accidentally dropping electronic devices, such as laptops or mobile phones, will often lead to damage. In some situations, energy storage devices may also cause fires. caused by impact " , Julio D'Arcy - assistant professor at Washington University in St. Louis Louis said.
This new material can withstand hammering more than 40 times.(Photo: Washington University).
By controlling the rust formation in the solution, the researchers developed a micrometer-sized porous layer consisting of conductive fibers bonded to a flexible organic plastic layer. The result is somewhat similar to a sandwich on one side.
"It is similar to the mechanism that leads to the formation of rust on the surface of a wet piece of metal," D'Arcy said.
"Here, we have carefully designed the nanostructure to make a polymer film assembled in parallel with the rusted surface. It creates a layer of interwoven polymer nanoparticles with a fabric-like structure that is very flexible. and ideal for storing energy in a super capacitor ".
Researchers have tried to bend this new material multiple times at different angles. After that, they took a hammer to beat repeatedly and even hit with the same dynamic force as a crash at a speed of nearly 50 km / h.
With the same effect, other materials such as metal and carbon will break. But this new material does not break, but also maintains 80% of the energy storage capacity after the first hammering, and after 40 consecutive beatings, it maintains 74%.
