New textile lithium battery
PolyU’s novel lightweight textile lithium battery demonstrates high energy density of more than 450 Wh/L, and excellent flexibility — with a bending radius of less than 1mm, and 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. This 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 of PolyU’s Institute of Textiles and Clothing (ITC) has snatched 3 prizes at the 47th International Exhibition of Inventions of Geneva in Le Grand-Saconnex/Switzerland held in April 2019, namely a Gold Medal and 2 Special Merit Awards.