Aqueous battery fiber with high volumetric and areal power density for flexible electronics

• DOI: 10.1016/j.device.2023.100179
• Publication Date: 2023-12-12T15:30:31Z
• Authors: Long Qin; Chang Xu; Qingling Che; Fuzhi Yan; Jie Xue; Xiaofei Wei; Siwei Xiang; Jie Wu; Changyuan Tao; Xiaohong Liu; Chong-Yew Lee; Wei Zhang; Xing Fan
• Keywords: Power density; Energy density; Area density

The performance of small wearable or robotic devices is limited by the energy and power density batteries. We present a rechargeable aqueous gel-type AgO-Zn battery, with 17.9 W/cm3 an 624 mWh/cm3 at 0.2C 358 50C. designed multilayered fractal ion-channel structure for long, fibrous AgO electrode using twisting method. A prototype headband 2 cm × 25 woven batteries was tested. With output >4 W, battery can extend operation time commercial augmented reality glasses from h to over 12 h. Prototype different shapes this design were made, including carrying bag that works as bank phone spider bird.