Spotlighting the boosted energy storage capacity of CoFe2O4/Graphene nanoribbons: A promising positive electrode material for high-energy-density asymmetric supercapacitor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU150444" target="_blank" >RIV/00216305:26210/23:PU150444 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0360544223003080?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360544223003080?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.energy.2023.126914" target="_blank" >10.1016/j.energy.2023.126914</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spotlighting the boosted energy storage capacity of CoFe2O4/Graphene nanoribbons: A promising positive electrode material for high-energy-density asymmetric supercapacitor

Popis výsledku v původním jazyce

CoFe2O4/Graphene Nanoribbons (GNRs) nanocomposite was successfully fabricated and utilised as an electrode active material for high-energy supercapacitor cells. Thanks to the outstanding physicochemical features of a graphene nanoribbon with excellent electrical conductivity and the synergistic effect with cobalt ferrite, as well as the pseudocapacitive effect. The CoFe2O4/GNRs nanohybrid offered an exceptional specific capacitance of 922 F g- 1 (415 C g- 1) at 1.0 A g-1 in 3.0 M KOH electrolyte in a standard 3-electrode set-up. Additionally, the impressive supercapacitive performance metrics showed that the suggested electrode had a distinctive morphology and could be a candidate for capacitive energy storage systems. These metrics included good cycle stability and 87% capacitance retention at the end of the 10,000th CV cycle. Moreover, the asymmetric supercapacitor cell (ASC) was designed by assembling CoFe2O4/GNRs and activated carbon (AC). The resultant ASC provided an improved specific capacitance of 487.85 F g- 1 (683 C g-1) at 1.0 A g-1. At this current density value, the energy density and the power density values were computed as to be 132.8 Wh.kg- 1 and 632.39 W kg- 1. The highest power density was discovered to be 6730.76 W kg- 1 at 10.0 A g-1, whereas the energy density was determined as 8.75 Wh.kg- 1 at this current density. The results of the work proved that CoFe2O4/GNRs nanohybrids are up-and-coming electrode active materials for advanced electrochemical energy storage and conversion technologies.

Název v anglickém jazyce

Spotlighting the boosted energy storage capacity of CoFe2O4/Graphene nanoribbons: A promising positive electrode material for high-energy-density asymmetric supercapacitor

Popis výsledku anglicky

CoFe2O4/Graphene Nanoribbons (GNRs) nanocomposite was successfully fabricated and utilised as an electrode active material for high-energy supercapacitor cells. Thanks to the outstanding physicochemical features of a graphene nanoribbon with excellent electrical conductivity and the synergistic effect with cobalt ferrite, as well as the pseudocapacitive effect. The CoFe2O4/GNRs nanohybrid offered an exceptional specific capacitance of 922 F g- 1 (415 C g- 1) at 1.0 A g-1 in 3.0 M KOH electrolyte in a standard 3-electrode set-up. Additionally, the impressive supercapacitive performance metrics showed that the suggested electrode had a distinctive morphology and could be a candidate for capacitive energy storage systems. These metrics included good cycle stability and 87% capacitance retention at the end of the 10,000th CV cycle. Moreover, the asymmetric supercapacitor cell (ASC) was designed by assembling CoFe2O4/GNRs and activated carbon (AC). The resultant ASC provided an improved specific capacitance of 487.85 F g- 1 (683 C g-1) at 1.0 A g-1. At this current density value, the energy density and the power density values were computed as to be 132.8 Wh.kg- 1 and 632.39 W kg- 1. The highest power density was discovered to be 6730.76 W kg- 1 at 10.0 A g-1, whereas the energy density was determined as 8.75 Wh.kg- 1 at this current density. The results of the work proved that CoFe2O4/GNRs nanohybrids are up-and-coming electrode active materials for advanced electrochemical energy storage and conversion technologies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Laboratoř integrace procesů pro trvalou udržitelnost</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Energy

ISSN

0360-5442

e-ISSN

1873-6785

Svazek periodika

270

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

„“-„“

Kód UT WoS článku

001011360000001

EID výsledku v databázi Scopus

2-s2.0-85148346252