Enhanced Electrochemical Performance of Binder-Free Fluorine-Vanadium-Doped CoMoO4 Nanosheets via In Situ MXene Integration for Energy Storage Applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932250" target="_blank" >RIV/60461373:22310/25:43932250 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/full/10.1021/acsaem.5c01660" target="_blank" >https://pubs.acs.org/doi/full/10.1021/acsaem.5c01660</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsaem.5c01660" target="_blank" >10.1021/acsaem.5c01660</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced Electrochemical Performance of Binder-Free Fluorine-Vanadium-Doped CoMoO4 Nanosheets via In Situ MXene Integration for Energy Storage Applications

Popis výsledku v původním jazyce

Designing an affordable device that seamlessly combines efficient electrochemical energy storage with straightforward, robust protocols represents a promising pathway for ushering in the next generation of green power solutions and fostering a sustainable society. In this work, CoMoO4, vanadium-doped CoMoO4 (V-CoMoO4), and fluorine-vanadium-doped CoMoO4 (F-V-CoMoO4) were synthesized in situ on nickel foam (NF) using a hydrothermal method, followed by thermal treatment, resulting in a hierarchical structure with interconnected nanosheets and open porous channels. V2C MXene was used as the vanadium source, which was fully oxidized during the synthesis. This unique architecture is particularly advantageous for supercapacitor applications, as it facilitates efficient electrolyte flow, promotes the formation of oxygen defects that enhance ion transport, and ultimately maximizes electrochemical performances. At a current density of 2.5 mA/cm2, the F-V-CoMoO4 electrode achieves an areal capacitance of approximately 2250 mF/cm2 (900 F/g at 1 A/g), outperforming pristine CoMoO4 (180 mF/cm2, 72 F/g) and V-doped CoMoO4 (810 mF/cm2, 324 F/g). An asymmetric supercapacitor is fabricated using an F-V-CoMoO4@NF//AC@NF device and PVA/KOH gel electrolyte, showing excellent redox behavior and cycling stability, with 100% capacity retention after 2000 cycles at a current density of 1 Ag-1. Moreover, the developed device exhibits a specific energy density of 11.5 Whkg-1 and a power density of 225 Wkg-1 at a current density of 0.3 A/g. These findings highlight the potential of F-V doping in enhancing the electrochemical properties of CoMoO4-based electrodes.

Název v anglickém jazyce

Enhanced Electrochemical Performance of Binder-Free Fluorine-Vanadium-Doped CoMoO4 Nanosheets via In Situ MXene Integration for Energy Storage Applications

Popis výsledku anglicky

Designing an affordable device that seamlessly combines efficient electrochemical energy storage with straightforward, robust protocols represents a promising pathway for ushering in the next generation of green power solutions and fostering a sustainable society. In this work, CoMoO4, vanadium-doped CoMoO4 (V-CoMoO4), and fluorine-vanadium-doped CoMoO4 (F-V-CoMoO4) were synthesized in situ on nickel foam (NF) using a hydrothermal method, followed by thermal treatment, resulting in a hierarchical structure with interconnected nanosheets and open porous channels. V2C MXene was used as the vanadium source, which was fully oxidized during the synthesis. This unique architecture is particularly advantageous for supercapacitor applications, as it facilitates efficient electrolyte flow, promotes the formation of oxygen defects that enhance ion transport, and ultimately maximizes electrochemical performances. At a current density of 2.5 mA/cm2, the F-V-CoMoO4 electrode achieves an areal capacitance of approximately 2250 mF/cm2 (900 F/g at 1 A/g), outperforming pristine CoMoO4 (180 mF/cm2, 72 F/g) and V-doped CoMoO4 (810 mF/cm2, 324 F/g). An asymmetric supercapacitor is fabricated using an F-V-CoMoO4@NF//AC@NF device and PVA/KOH gel electrolyte, showing excellent redox behavior and cycling stability, with 100% capacity retention after 2000 cycles at a current density of 1 Ag-1. Moreover, the developed device exhibits a specific energy density of 11.5 Whkg-1 and a power density of 225 Wkg-1 at a current density of 0.3 A/g. These findings highlight the potential of F-V doping in enhancing the electrochemical properties of CoMoO4-based electrodes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

ACS Applied Energy Materials

ISSN

2574-0962

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

11513-11523

Kód UT WoS článku

001533459700001

EID výsledku v databázi Scopus

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