The "spray battery" can be sprayed onto the surface of any dry object.

Lithium batteries are an indispensable partner in people's lives. It is compact and portable, but it cannot be made into any shape. US researchers have invented a spray battery that can be sprayed on the surface of many materials to store and release electrical energy.

Spray battery

Researchers at Rice University in Houston, Texas, invented the spray battery.

During the test, the researchers connected nine bathroom tiles and one of them was covered with solar panels to use the lab lighting to generate electricity. The researchers sprayed the sprayed battery on the remaining tiles and found that the sprayed battery began to charge.

After it was fully charged, it lit a group of light-emitting diodes labeled "Rice" for six hours. During this period, the voltage has been stable at 2.4 volts.

The researchers said that the spray battery can be sprayed on the surface of any object, including ceramics, glass and stainless steel. These surfaces do not have to be smooth and flat. If you wish, you can even spray a battery outside the cup.

Uncover secrets

A report published in the magazine Nature-Science, published on June 28th, unveiled the secrets of the storage of electrical energy stored by sprayed batteries.

Researchers “dissolved” the elements contained in traditional batteries and dissolved them into liquids. The electrolyte is actually divided into five layers after discharging, which are two current collectors, a positive electrode, a negative electrode, and a polymer isolation layer between the two electrodes.

Researchers say that spray-on batteries can make everyday electronic devices lighter and thinner, more meaningful for solar energy devices, and can significantly "shrink" the battery's volume.

Reuters quoted Dr. Prikher Ajajan of Rice University as saying: “This means that traditional battery materials have given way to more flexible materials. In this way, there can be unlimited possibilities for the design of storage (electrical energy) devices.”

Expect change

The spray battery research project was hosted by Nancy Singer, a graduate student at Rice University.

Singer said: "The hard part is how to maintain the stability of the coating. The polymer barrier plays a key role."

Sprayed batteries have a fatal weakness: Spraying must be done in a dry, oxygen-free environment. This greatly limits its application in real life. Researchers are actively exploring ways to solve this problem, so that the spray battery will soon enter the homes of ordinary people.

Singh said: "We think it will bring about a change." (According to "King")

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