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Advanced Materials

IF: 27.39
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Piezoelectric‐Augmented Thermoelectric Ionogels for Self‐Powered Multimodal Medical Sensors

Published:9 December 2024 DOI: 10.1002/adma.202414663
Ya-Hsin Pai, Chen Xu, Renyang Zhu, Xinyi Ding, Shengqiang Bai, Ziqi Liang, Lidong Chen

Abstract

A paradigm ionogel consisting of ionic liquid (IL) and PVDF?HFP composites is made, which inherently possesses dual-function ionic thermoelectric (iTE) and piezoelectric (PE) attributes. This study investigates an innovative “PE-enhanced iTEs” effect, wherein the ionic thermopower exhibits a 58% enhancement while the ionic conductivity arises more than 2× within a PE-induced internal electric field. By harnessing these multifaceted features, fully self-powered, multimodal sensors demonstrate their superior energy conversion capabilities, which possessed minimum sensitivities of 0.13?mV?kPa?1 and 0.96?mV?K?1 in pressure and temperature alterations, respectively. The PE augmentation of iTEs is maximized by ≈3× under rising water pressure. Their swift and sophisticated responses to various in vivo vital signs simultaneously in a hemorrhagic shock scenario, indicative of good prospects in the clinical medicine field are showcased.

Substances (2)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Lithium tetrafluoroborate 14283-07-9 BF4Li 349 suppliers $6.00-$13600.00
1-ETHYL-3-METHYLIMIDAZOLIUM BIS(TRIFLUOROMETHYLSULFONYL)IMIDE 174899-82-2 C6H11N2.C2F6NO4S2 280 suppliers $19.00-$725.00

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