Synergistic effects of CuO-Cr2O3 heterostructures fabricated via spray pyrolysis for high-performance symmetric supercapacitors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638205" target="_blank" >RIV/68378271:_____/25:00638205 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.inoche.2025.115188" target="_blank" >https://doi.org/10.1016/j.inoche.2025.115188</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.inoche.2025.115188" target="_blank" >10.1016/j.inoche.2025.115188</a>
Alternative languages
Result language
angličtina
Original language name
Synergistic effects of CuO-Cr2O3 heterostructures fabricated via spray pyrolysis for high-performance symmetric supercapacitors
Original language description
In this study, we report a novel approach to fabricating binder-free CuO-Cr₂O₃ thin films using a cost-effective spray pyrolysis technique, targeting high-performance supercapacitor applications. The influence of deposition temperature on the structural, morphological, and electrochemical properties of the films was systematically investigated. XRD analysis confirmed their amorphous nature, while SEM revealed a porous cuboid-like morphology. Raman spectroscopy provided insights into the vibrational characteristics of the heterostructure. Electrochemical evaluation in a three-electrode setup showed that films deposited at 320 ◦C delivered a remarkable specific capacitance of 1454 F g−1 at 1 A g−1. Furthermore, a fully symmetric CuO-Cr₂O₃//CuO-Cr₂O₃ device, fabricated using these optimized electrodes, achieved a specific capacitance of 280 F g−1 at 3.75 A g−1, along with 91 % capacitance retention over 2000 cycles. The device also exhibited a high energy density of 99 Wh/kg at a power density of 3000 W/kg. To the best of our knowledge, this is the first report demonstrating a symmetric supercapacitor device based on spray-pyrolyzed CuO-Cr₂O₃ thin films, offering a promising route toward scalable, durable, and energy-dense energy storage systems.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Inorganic Chemistry Communications
ISSN
1387-7003
e-ISSN
1879-0259
Volume of the periodical
181
Issue of the periodical within the volume
Nov
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
115188
UT code for WoS article
001544519100003
EID of the result in the Scopus database
2-s2.0-105012148230