Flexible textile lithium battery targets wearable electronics

May 28, 2019 //By Jean-Pierre Joosting
Flexible textile lithium battery targets wearable electronics
PolyU's A novel lightweight Textile Lithium Battery developed by PolyU demonstrates high energy density of more than 450 Wh/L, and excellent flexibility with a bending radius of less than 1-mm, as well as foldability of over 1,000 cycles with marginal capacity degradation.

In comparison, the existing bendable lithium battery can only reach a bending radius of about 25 mm, and with much lower performance of less than 200 Wh/L. The Textile Lithium Battery, of less than 0.5 mm thick, also possesses fast charging/discharging capability, and long cycle life comparable with conventional lithium batteries.

The innovation developed by the research team at the PolyU Institute of Textiles and Clothing (ITC) has won three prizes at the 47th International Exhibition of Inventions of Geneva held in April this year, namely a Gold Medal and two Special Merit Awards.

Professor ZHENG Zijian, who leads the ITC research team, said, "Wearable technology has been named as the next global big market opportunity after smartphones. Global market revenues for wearable devices are forecasted to grow by leaps and bounds, of over 20 percent annually, to reach US$100 billion by 2024. As all wearable electronics will require wearable energy supply, our novel technology in fabricating Textile Lithium Battery offers promising solution to a wide array of next-generation applications, ranging from healthcare, infotainment, sports, aerospace, fashion, IoT to any sensing or tracking uses that may even exceed our imagination of today."


Professor ZHENG Zijian leads the research team of PolyU's Institute of Textiles and Clothing to develop the highly flexible, high-energy Textile Lithium Battery. Image courtesy of PolyU.


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