Issue 3, 2024

“All-in-one” polypyrrole pillar hybridization flexible membranes on multimodal tactile sensors for wearable energy-storage devices and human–machine interfaces

Abstract

We designed an “all-in-one” polypyrrole pillar hybridization flexible membrane for wearable energy-storage devices and human–machine interfaces (HMIs). The PPy pillar microarrays were an “elevated freeway” for enhancing electron/ion transfer and pressure sensing. The intercalated graphene/cellulose nanofibrils (RGO/CNFs) microstructure was a ground-staggered “road” network for mechanical support and charge adsorption. Based on this finely designed structure, a tactile sensor was developed to possess a sensitive response of current against various human signals, such as finger bending/sliding, swallowing, facial expression, and tremors. Application scenarios of HMIs could be expanded to interface instantiation, which, after assembly into a micro-supercapacitor, an area capacitance of 113 mF cm−2 (vs. the whole device), an area energy density of 15.7 μW h cm−2, and a power density of 0.25 mW cm−2 were realized. Similarly, the MSC covered with an ice cube could be connected into a series configuration to power an LED, which comprised an anti-freezing gel electrolyte. The flexible membrane with a hierarchical structure demonstrated potential in wearable energy-storage devices and HMIs. Our methodology could be used to develop next-generation “soft” electronics.

Graphical abstract: “All-in-one” polypyrrole pillar hybridization flexible membranes on multimodal tactile sensors for wearable energy-storage devices and human–machine interfaces

Supplementary files

Article information

Article type
Research Article
Submitted
17 अक्तूबर 2023
Accepted
19 दिसम्बर 2023
First published
19 दिसम्बर 2023

Inorg. Chem. Front., 2024,11, 936-946

“All-in-one” polypyrrole pillar hybridization flexible membranes on multimodal tactile sensors for wearable energy-storage devices and human–machine interfaces

J. Wei, Y. Teng, L. Han, J. Ge, Z. Zhang, Y. Zhou, C. Xu, D. Li, K. C. Tam and Y. A. Wu, Inorg. Chem. Front., 2024, 11, 936 DOI: 10.1039/D3QI02119J

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