Designing a high-performance electrode leveraging dual-material synergy in a nanoarchitectural framework: Progressing towards supercapacitors with enhanced energy density

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F25%3A43976033" target="_blank" >RIV/49777513:23640/25:43976033 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jallcom.2025.182267" target="_blank" >https://doi.org/10.1016/j.jallcom.2025.182267</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2025.182267" target="_blank" >10.1016/j.jallcom.2025.182267</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Designing a high-performance electrode leveraging dual-material synergy in a nanoarchitectural framework: Progressing towards supercapacitors with enhanced energy density

Popis výsledku v původním jazyce

Exploring highly electroactive electrode materials with compatible nanostructures, tunable properties, and strong conductive networks is vital for supercapacitors (SCs). However, comprehending this complex area remains a significant challenge. In this work, we report the synthesis of a hierarchical NiCo2O4@NiMoO4 (NCO@NMO) hybrid nanoarchitecture utilizing a cost-effective hydrothermal approach and subsequentannealing. This is achieved through facile and scalable in situ fabrication techniques that yield an electrode material suitable for advanced high-energy hybrid supercapacitors (HSCs). The unique hybrid nanoarchitecture is engineered to provide an effective, open-porous framework that facilitates ion diffusion and enables rapid electron transport. The NCO@NMO hybrid nanoarchitecture electrode exhibits a battery-type redox mechanism, achieving a peak specific capacitance of 1984 F g􀀀 1 at a current density of 1 A g􀀀 1 in an aqueous electrolyte, surpassing the performance of its individual components. Enhanced electrochemical performance is achieved by increasing the density of electroactive sites and conductivity through surface modifications, thereby facilitating rapid redox kinetics. Notably, the fabricated HSC device, with a configuration of NCO@NMO//activated carbon, demonstrates an impressive power density of 42.56 kW kg􀀀 1, complemented by an energy density of 75.04 Wh kg􀀀 1, and exhibits excellent cyclic stability, retaining up to 89.62 ± 1.19 % of its capacitance, even after 20,000 cycles. The high energy density and considerable cyclic stability are comparatively higher than those of conventional SCs and even approach the values of commercial batteries.

Název v anglickém jazyce

Designing a high-performance electrode leveraging dual-material synergy in a nanoarchitectural framework: Progressing towards supercapacitors with enhanced energy density

Popis výsledku anglicky

Exploring highly electroactive electrode materials with compatible nanostructures, tunable properties, and strong conductive networks is vital for supercapacitors (SCs). However, comprehending this complex area remains a significant challenge. In this work, we report the synthesis of a hierarchical NiCo2O4@NiMoO4 (NCO@NMO) hybrid nanoarchitecture utilizing a cost-effective hydrothermal approach and subsequentannealing. This is achieved through facile and scalable in situ fabrication techniques that yield an electrode material suitable for advanced high-energy hybrid supercapacitors (HSCs). The unique hybrid nanoarchitecture is engineered to provide an effective, open-porous framework that facilitates ion diffusion and enables rapid electron transport. The NCO@NMO hybrid nanoarchitecture electrode exhibits a battery-type redox mechanism, achieving a peak specific capacitance of 1984 F g􀀀 1 at a current density of 1 A g􀀀 1 in an aqueous electrolyte, surpassing the performance of its individual components. Enhanced electrochemical performance is achieved by increasing the density of electroactive sites and conductivity through surface modifications, thereby facilitating rapid redox kinetics. Notably, the fabricated HSC device, with a configuration of NCO@NMO//activated carbon, demonstrates an impressive power density of 42.56 kW kg􀀀 1, complemented by an energy density of 75.04 Wh kg􀀀 1, and exhibits excellent cyclic stability, retaining up to 89.62 ± 1.19 % of its capacitance, even after 20,000 cycles. The high energy density and considerable cyclic stability are comparatively higher than those of conventional SCs and even approach the values of commercial batteries.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Kvantové materiály pro aplikace v udržitelných technologiích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

1037

Číslo periodika v rámci svazku

AUG 10 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

16

Strana od-do

nestránkováno

Kód UT WoS článku

001540292600001

EID výsledku v databázi Scopus

2-s2.0-105010567019