Synergistic effects of CuO-Cr2O3 heterostructures fabricated via spray pyrolysis for high-performance symmetric supercapacitors

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Synergistic effects of CuO-Cr2O3 heterostructures fabricated via spray pyrolysis for high-performance symmetric supercapacitors

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Synergistic effects of CuO-Cr2O3 heterostructures fabricated via spray pyrolysis for high-performance symmetric supercapacitors

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Inorganic Chemistry Communications

ISSN

1387-7003

e-ISSN

1879-0259

Svazek periodika

181

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

115188

Kód UT WoS článku

001544519100003

EID výsledku v databázi Scopus

2-s2.0-105012148230