Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO3@g-C3N4) as a cost-effective novel electrode material for advanced supercapacitor applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F23%3AA2402LS0" target="_blank" >RIV/61988987:17310/23:A2402LS0 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2023/RA/D3RA04108E" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2023/RA/D3RA04108E</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Iron/vanadium co-doped tungsten oxide nanostructures anchored on graphitic carbon nitride sheets (FeV-WO3@g-C3N4) as a cost-effective novel electrode material for advanced supercapacitor applications

Original language description

In this work, we studied the effect of iron (Fe) and vanadium (V) co-doping (Fe/V), and graphitic carbon nitride (g-C3N4) on the performance of tungsten oxide (WO3) based electrodes for supercapacitor applications. The lone pair of electrons on nitrogen can improve the surface polarity of the g-C3N4electrode material, which may results in multiple binding sites on the surface of electrode for interaction with electrolyte ions. As electrolyte ions interact with g-C3N4, they quickly become entangled with FeV-WO3nanostructures, and the contact between the electrolyte and the working electrode is strengthened. Herein, FeV-WO3@g-C3N4is fabricated by a wet chemical approach along with pure WO3and FeV-WO3. All of the prepared samples i.e., WO3, FeV-WO3, and FeV-WO3@g-C3N4 were characterized by XRD, FTIR, EDS, FESEM, XPS, Raman, and BET techniques. Electrochemical performance is evaluated by cyclic voltammetry (CV), galvanic charge/discharge (GCD), and electrochemica limpedance spectroscopy (EIS). It is concluded from electrochemical studies that FeV-WO3@g-C3N4exhibits the highest electrochemical performance with specific capacitance of 1033.68 F g-1at scan rate 5 mV s-1in the potential window range from-0.8 to 0.25 V, that is greater than that for WO3(422.76 F g-1) and FeV-WO3(669.76 F g(-1)). FeV-WO3@g-C3N4has the highest discharge time (867 s) that shows it has greater storage capacity, and its coulombic efficiency is 96.7%, which is greater than that for WO3(80.1%) and FeV-WO3(92.1%), respectively. Furthermore, excellent stability up to 2000cycles is observed in FeV-WO3@g-C3N4. It is revealed from EIS measurements that equivalent series resistance and charge transfer values calculated for FeV-WO3@g-C3N4are 1.82Uand 0.65U, respectively.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10400 - Chemical sciences

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

5.10.2023

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

26822-26838

UT code for WoS article

001070886400001

EID of the result in the Scopus database

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