Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



An anti-freezing hydrogel based stretchable triboelectric nanogenerator for biomechanical energy harvesting at sub-zero temperature

Author affiliations

Abstract

Stretchable triboelectric nanogenerators (TENGs) have been made available for a large amplitude of human body movement as an effective wearable power source. However, the elasticity and performance of such a kind of device seriously decline in a harsh environment, especially below sub-zero temperature. In this work, an anti-freezing hydrogel was synthesized by one-step radical polymerization of acrylamide monomer in hydroxyethyl cellulose aqueous solution. After adding LiCl into the hydrogel, it can be cooled to temperatures as low as −69 °C without freezing. The hydroxyethyl cellulose not only enhances the mechanical properties as a physical crosslinking agent but also provides water retention properties. With a constant elongation of ∼150%, the anti-freezing hydrogel based TENG (AH-TENG) has been successfully demonstrated to harvest human biomechanical energy to drive wearable electronic devices, even in a harsh ice and snow environment. At a fixed frequency of 2.5 Hz, an AH-TENG with a 3 × 3 cm2 area achieved an output of 285 V, 15.5 μA, 90 nC and an instantaneous peak power density of 626 mW m−2, respectively. This work is anticipated to provide a promising approach for the advancement of flexible energy sources under harsh conditions.

Graphical abstract: An anti-freezing hydrogel based stretchable triboelectric nanogenerator for biomechanical energy harvesting at sub-zero temperature

Back to tab navigation

Supplementary files

Article information


Submitted
21 Mar 2020
Accepted
22 Jun 2020
First published
26 Jun 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

An anti-freezing hydrogel based stretchable triboelectric nanogenerator for biomechanical energy harvesting at sub-zero temperature

D. Bao, Z. Wen, J. Shi, L. Xie, H. Jiang, J. Jiang, Y. Yang, W. Liao and X. Sun, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA03215H

Social activity

Search articles by author

Spotlight

Advertisements