The Beijing Institute of Nano Energy and Systems, Chinese Academy of Sciences, Professor Wang Zhonglin of the Georgia Institute of Technology and Fan Xing Group of Associate Professor of Chongqing University, inspired by the shuttle weaving technology, have broken through the technical difficulties of electrode micro-nano interface stress control and will The polymer fiber-based solar cell is co-woven with the fiber friction nano-generator to form a single-layer, lightweight, breathable, and inexpensive new all-solid-state smart wearable fabric. The fabric not only can collect sunlight energy, but also can convert the mechanical friction of the fabric inside the fabric caused by human motion into electrical energy, and drive the portable electronic device to work without interruption. Related research was recently published in Nature-Energy.
Researchers through shuttle weaving technology, in a 320 micron thick single-layer fabric, the solar fabric module and nano-generator module according to different electrical output requirements for a variety of complex series and parallel, and integrated according to demand Different parts of human clothes. Through the combination of the solar module and the nano-generator module, the power fabric can achieve a relatively stable power output in the impedance range of several hundred ohms to a few mega-ohms, which greatly improves the adaptability of the fabric as a power source.
The work also systematically studied the influence of different fabric structures such as plain weave, twill weave, satin weave and mixed weave on the electrical output of fabric devices. 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. . This new type of shuttle weaving technology is very conducive to large-scale production, further reducing the fabric's cost, it has broad application prospects in the field of wear electronics, human health, energy, military and other fields.
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