U.S. R & D New Cables Can Both Convey Energy and Store Energy

Until now, cables have only been used to deliver electrical energy. Imagine whether it can be used to power MP3 players, smart phones, and electric cars that they carry with them? It sounds like science fiction. And the research laboratory of the Central University of the United States developed a breakthrough method that could transmit and store electricity in a single lightweight copper wire, or it could be implemented. The latest issue of Nature has published a detailed discussion of the technology; Materials Science magazine will use it as the focus of the (June 30th) cover story.

Professor Thomas, a nanotechnology scientist at the Central University of Florida, said: "The copper wire is an initial point, but with the improvement of this technology, special fibers can also conduct electricity and store energy in nanostructures. This is a very interesting idea."

Thomas said that more direct applications can be reflected in the design and development of electric vehicles, space vehicles, and portable electronic devices. As long as they can store and transport energy on the same line, bulky and space-consuming batteries may become obsolete. Therefore, it can further miniaturize the electronic device or use the space previously used for the battery for other purposes. For example, for launch vehicles, this may ease the burden and make launch costs even lower.

According to the physicist organization's website on June 2nd, Thomas was inspired by this "storage cable" on a walk near home at night. He led the team to start with a single copper wire and grow a layer of nano-whisker on the outer surface of the copper wire; then they were treated with a special alloy to create an electrode. Since the two electrodes require a strong energy storage, they have to think of a solution.

The researchers created a second electrode by adding a very thin plastic sheet around the resulting whiskers and wrapping them with a metal sheath. Then a special gel is used to bond these layers together. Since the nanowhisker layer is insulative, the copper wire retains the ability to transmit power channels inside, while the layers around the wire can independently store large amounts of energy. In other words, the team created a super capacitor on the outside of the copper wire that can store powerful energy, such as the power needs of a supply vehicle or heavy construction equipment.

Thomas said that this technology method can be transferred to other types of materials, resulting in specially processed clothing fibers can hold enough energy to complete large tasks. For example, if a flexible solar cell and these fibers are serially connected to a jacket, the electronics and other devices can be independently powered.

Thomas said: "It's very exciting. We'll implement it step by step. I like to go to the lab every day and see what happens next. Sometimes it's not satisfactory, but even then, Failure will teach us a lot." (Hua Ling)

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