Scientists have developed a composite energy garment that can simultaneously collect light energy and mechanical energy.

With the rapid development of smart wearable devices, people are increasingly demanding portable, sustainable, flexible and sustainable power sources. People have always dreamed of realizing an energy technology that can weave into clothing. It can collect various environmental energy such as light, wind, and human movement, and convert it into electrical energy to provide continuous electrical energy to the electronic devices worn by them. Under the joint efforts of Professor Wang Zhonglin of the Georgia Institute of Technology and the Institute of Nano Energy and Systems of the Chinese Academy of Sciences in Beijing, and the Associate Professor Fan Xing Group of Chongqing University, inspired by the shuttle weaving technology, the stress control of the electrode micro-nano interface was broken. Technical difficulties have successfully woven together new polymer fiber-based solar cells and fiber friction nanogenerators to form a single-layer, lightweight, breathable, and inexpensive new all-solid-state smart wearable fabric. The fabric can not only collect sunlight energy, but also can convert the mechanical friction of the fabric inside the fabric caused by human motion into electrical energy, thereby driving the portable electronic device to work without interruption.

Through shuttle weaving technology, we can carry out various complex series and parallel connection of solar fabric modules and nano-generator modules according to different electrical output requirements in a 320-micron-thick single-layer fabric, and integrate them into human body clothes according to requirements. Different parts. It is worth mentioning that through the combination of the solar module and the nano-generator module, the power fabric can achieve a relatively stable power output within a few hundred ohms to a few mega-ohms impedance range, thereby greatly increasing the fabric as a power source. Adaptability. In this work, the influence of different fabric structures such as plain weave, twill weave, satin weave, and mixed lines on the electrical output of fabric devices was systematically investigated. By co-spinning with colored silk yarns, practical energy fabrics with different colors and different appearance patterns are realized. Based on energy fabrics, a series of self-powered clothes, curtains, tents and other commonly used fabric items in daily life can be self-powered. The experimental results show that a single layer fabric with a length of 5 cm and a width of 4 cm, driven by outdoor sunlight and mechanical movement, can not only provide continuous power for electronic devices, mobile phones and other devices, but also can drive electro-chemical reactions such as electrolysis. . In addition, this new shuttle weaving technology is very conducive to large-scale production, further reducing the fabric's cost. As the energy fabric has the fine properties of being light, thin, soft, wearable, collapsible, and good in air permeability, it will have broad application prospects in the areas of wearable electronics, human health, energy, and military. The related work was published in the latest issue of Nature Energy 1, 16138, 2016, DOI 10.1038/NENERGY.2016.138. Dr. Chen Jun (current postdoctoral researcher at Stanford University) of the Georgia Institute of Technology in the United States and Huang Yi of Chongqing University are co-first authors.

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