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Issue 26, 2020
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A flexible self-charging sodium-ion full battery for self-powered wearable electronics

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Abstract

Novel portable power sources featuring high flexibility, built-in sustainability and enhanced safety have attracted ever-increasing attention in the field of wearable electronics. Herein, a novel flexible self-charging sodium-ion full battery was feasibly fabricated by sandwiching a BaTiO3-P(VDF-HFP)-NaClO4 piezoelectric gel-electrolyte film between an advanced Na3V2(PO4)3@C cathode and hard carbon anode. Besides the considerable flexibility and electrochemical storage performance, the as-designed device also delivers sound self-charging capability via various stress patterns, regardless of whether under static compression, repeated bending or continuous palm patting. Serially connected self-charging devices are able to drive several electronic devices with a good working state. Specifically, a unique theory of electromagnetic fields was successfully introduced to deduce the direct self-charging mechanism, where no rectifier was applied and the battery was charged by the built-in piezoelectric component. This work presents an innovative approach to achieve a new sustainable, safe and flexible sodium-ion battery for self-powered wearable electronics.

Graphical abstract: A flexible self-charging sodium-ion full battery for self-powered wearable electronics

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Supplementary files

Article information


Submitted
15 May 2020
Accepted
16 Jun 2020
First published
16 Jun 2020

J. Mater. Chem. A, 2020,8, 13267-13276
Article type
Paper

A flexible self-charging sodium-ion full battery for self-powered wearable electronics

D. Zhou, T. Yang, J. Yang and L. Fan, J. Mater. Chem. A, 2020, 8, 13267
DOI: 10.1039/D0TA05006G

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