3D patterned fabric-based wearable micro-supercapacitor operating at high voltage by electrostatic actuation
Abstract To address the energy storage needs of wearable electronics, this study developed high-performance, flexible micro-supercapacitors (MSCs) using 2D and 3D patterned fabric-based microelectrodes. The 2D electrodes were created via a screen-printing method with an omnidirectional pre-stretchin...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
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| Series: | npj Flexible Electronics |
| Online Access: | https://doi.org/10.1038/s41528-025-00435-2 |
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| Summary: | Abstract To address the energy storage needs of wearable electronics, this study developed high-performance, flexible micro-supercapacitors (MSCs) using 2D and 3D patterned fabric-based microelectrodes. The 2D electrodes were created via a screen-printing method with an omnidirectional pre-stretching strategy, while 3D array-structured electrodes were formed through electrostatic actuation. Nano-MnO2 and Na0.77MnO2 were deposited to enhance pseudo-capacitive storage and widen the electrochemical window. The C-C/MnO2-based MSCs exhibited a 21% pseudo-capacitance ratio, achieving an area-specific capacitance of 118.2 mF cm−2 at 5 mV s−1 and an energy density of 39.25 mWh cm−2 at 0.21 mW cm−2. These MSCs maintained 95.05%, 92.04%, and 89.74% of their capacitance under stretched, twisted, and folded conditions, respectively, and showed stable performance across temperatures from −20 °C to 60 °C. Additionally, C-C/Na0.77MnO2-based MSCs extended the electrochemical window to 1.6 V and retained 100.2% capacitance after 6500 cycles. This work offers innovative strategies for advancing portable and wearable electronic devices. |
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| ISSN: | 2397-4621 |