Flexible energy-storage ceramic thick-film structures with high flexural fatigue endurance
ID Šadl, Matej (Author), ID Lebar, Andrej (Author), ID Valentinčič, Joško (Author), ID Uršič Nemevšek, Hana (Author)

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When developing flexible electronic devices, trade-offs between desired functional properties and sufficient mechanical flexibility must often be considered. The integration of functional ceramics on flexible materials is a major challenge. However, aerosol deposition (AD), a room-temperature deposition method, has gained a reputation for its ability to combine ceramics with polymers previously considered incompatible with the conventional high-temperature sintering process. In this work, 0.9Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_3$−0.1PbTiO$_3$ (PMN−10PT) thick films were deposited directly on a polyimide substrate using the AD method. As a result, dense and flexible relaxor-ferroelectric thick films were produced by a one-step direct-integration, suitable for large-scale production. After annealing of as-deposited PMN−10PT films at 400 °C, stress-relaxation occurs, which is responsible for the development of a relaxor-ferroelectric character. Achieved high polarization (38 μC·cm$^{−2}$), high dielectric breakdown strength (∼1000 kV·cm$^{−1}$), and low hysteresis losses lead to improved recoverable energy density and energy-storage efficiency of the annealed thick films, reaching 10 J·cm$^{−3}$ and 73% (at 1000 kV·cm$^{−1}$), respectively. The thick films were subjected to flexural bending tests, which showed high flexibility (1.1% bending strain) and high durability (10$^5$ bending cycles). This stable energy-storage operation makes ceramic-polymer layered structures promising for integration into a wide range of flexible electronic devices.

Keywords:flexible electronics, ceramic thick films, energy storage, aerosol deposition method, polyimide substrate, relaxor-ferroelectrics, ceramics, deposition, electric fields, granular materials, thin films
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
ZF - Faculty of Health Sciences
Publication status:Published
Publication version:Version of Record
Number of pages:Str. 6896–6902
Numbering:Vol. 5, iss. 6
PID:20.500.12556/RUL-140633 This link opens in a new window
ISSN on article:2574-0962
DOI:10.1021/acsaem.2c00518 This link opens in a new window
COBISS.SI-ID:110882307 This link opens in a new window
Publication date in RUL:16.09.2022
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Record is a part of a journal

Title:ACS applied energy materials
Shortened title:ACS app. energy mater.
Publisher:American Chemical Society
COBISS.SI-ID:39550725 This link opens in a new window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.


Funder:ARRS - Slovenian Research Agency
Project number:J2-3058
Name:Upogljivi elementi z multifizikalnimi lastnostmi

Funder:ARRS - Slovenian Research Agency
Funding programme:Young researchers
Project number:PR-08977

Funder:ARRS - Slovenian Research Agency
Project number:P2-0105
Name:Multifunkcijski materiali in naprave: od kvantnega do makro nivoja

Funder:ARRS - Slovenian Research Agency
Project number:P2-0248
Name:Inovativni izdelovalni sistemi in procesi

Funder:Other - Other funder or multiple funders
Funding programme:JSI, Director’s fund

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