Imagine being able to recharge your portable gadgets while still exercising in warm sunshine, is not it cool?

In a new issue of Science in the World, the researchers reported on the 26th that they have developed a new type of smart clothing material that can simultaneously collect and use the solar energy and the human body's kinetic energy from the environment, which is expected to be used for wearable Device and even smart phone charging.

Chinese Academy of Sciences, the chief scientist of nano-energy and systems, Georgia Institute of Technology Professor Wang Zhonglin told Xinhua News Agency reporters that wearable electronic devices have shown great potential to replace traditional electronic products, but the battery life is short, the application is limited. The solution they propose is to integrate self-powered systems directly into wearable electronic systems.

Wang Zhonglin said that some studies have made the lightweight photovoltaic cell material into a fibrous fabric, but the photovoltaic cell needs to work under sufficient light and the working condition depends on the weather and other external conditions. In the new study, they combined with the existing friction nano-generator to develop a composite fabric system that can simultaneously collect and store mechanical energy of human movement.

First, they made fiber-based materials from dye-sensitized solar cells based on polymer materials to convert solar energy into electricity. Second, they use supercapacitors to store energy and supercapacitors make fibrous materials as well. Then, the electrode and the friction layer material are plated on the surfaces of the two materials.

Wang Zhonglin said: "When people exercise, the two fibers will rub against each other. By rubbing the principle of nano-generator, people can generate energy into electricity."

He said that all kinds of devices are made of flexible structural materials, can exhibit better output performance at different bending angles, so any combination of these devices can be woven into different shapes and styles.

Testing, the newly developed self-powered braid made of short-sleeved T-shirt can drive light-emitting diodes, sensors and other small electronic devices. Wang Zhonglin said that they will continue to improve the braid to reduce production costs and improve energy conversion efficiency, so as to more powerful wearable electronic devices and even smart phones direct charge.

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