Daejeon, Korea - Polyurethanes are vital to a new range of wearable batteries, according to Researchers at the Korea Advanced Institute of Science and Technology.
According to work published in the , researchers led by Jang Wook Choi, have successfully used polyurethane fibres to separate nickel and lithium foils incorporated into a textile battery. Polyurethane was chosen because it shows greater conductivity after soaking in electrolyte compared to other materials. The batteries can be incorporated with flexible solar cells. The batteries can also withstand at least 5000 folding events, say researchers.
According to an abstract of the paper: The final full-cells in the forms of clothes and watchstraps exhibited comparable electrochemical performance to those of conventional metal foil-based cells even under severe folding-unfolding motions simulating actual wearing conditions. Furthermore, the wearable textile battery was integrated with flexible and lightweight solar cells on the battery pouch to enable convenient solar-charging capabilities