A sustainable, continuously expandable, wearable breath moisture-induced electricity generator

Moisture from the breath is a ubiquitous water energy source. The inability to continuously provide water molecules limits its application in moisture-induced electricity generation. This study first develops an electricity-sustainable breath-moisture-induced electricity generator (BMIEG) during intermittent exhalations. The generator is fabricated by the end-to-end connection of two equal asymmetric regional sandwich structural graphene oxide/carbon nanotube based composite films, making it continuously expandable without limit. The BMIEG presents a slow discharging behavior when exhalation is stopped, and it continually lights up a light-emitting diode in the intermittent exhalation process with a simple size expansion of a series of array arrangements. Additionally, the BMIEG is freely assembled using a capacitor to achieve variable voltage and/or stabilized voltage electricity supply. The flexibility and reusability of the generator show its considerable application prospects in wearable electronic products. (c) 2022 Elsevier Ltd. All rights reserved.

Automated summary

This study develops a sustainable breath-moisture-induced electricity generator that utilizes the moisture from exhalation for intermittent power generation. The generator is flexible, reusable, and suitable for wearable electronic products.