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

Device, ISSN: 2666-9986, Vol: 2, Issue: 2, Page: 100179
2024
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Article Description

The performance of small wearable or robotic devices is limited by the energy and power density of batteries. We present a rechargeable aqueous gel-type AgO-Zn battery, with a power density of 17.9 W/cm 3 and an energy density of 624 mWh/cm 3 at 0.2C and 358 mWh/cm 3 at 50C. We designed a multilayered fractal ion-channel structure for the long, fibrous AgO electrode using a twisting method. A prototype headband of 2 cm × 25 cm woven with the fibrous batteries was tested. With a power output of >4 W, the headband battery can extend the operation time of commercial augmented reality glasses from 2 h to over 12 h. Prototype batteries of different shapes using this design were made, including a carrying bag that works as a power bank for a phone and batteries for a small robotic spider and a robotic bird.

Bibliographic Details

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

Elsevier BV

Engineering; Physics and Astronomy

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