Synergy of zero-dimensional carbon dots decoration on the one-dimensional architecture of Ag-doped V2O5 for supercapacitor and overall water-splitting applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F24%3AA2502NLF" target="_blank" >RIV/61988987:17310/24:A2502NLF - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0016236123033197?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236123033197?via%3Dihub</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Synergy of zero-dimensional carbon dots decoration on the one-dimensional architecture of Ag-doped V2O5 for supercapacitor and overall water-splitting applications

Original language description

The production of renewable energy sources and energy storage devices is crucial in addressing current global energy challenges. Hydrogen energy is a clean form of energy that can be produced without any harmful byproducts. For this purpose, nanorods of vanadium oxide (V2O5) and silver-doped vanadium oxide (Ag/V2O5) were synthesized by hydrothermal route. The carbon dots decorated silver doped vanadium oxide (Ag/V2O5@C) was fabricated using an ultrasonication approach. Various physio-chemical techniques were used to characterize the fabricated samples. The synthesized materials were employed as electrodes and electrocatalysts for supercapacitor and water-splitting applications. Cyclic voltammetry and cyclic charge-discharge experiments were performed, and results showed that Ag/V2O5@C exhibited 936 Fg(-1) specific capacitance at 5 mVs(-1) and 977 s discharge time. The charge transfer resistance was calculated via electrochemical impedance spectroscopy and Ag/V2O5@C showed a lower charge transfer resistance than other prepared materials. At 10 mAcm(-2), Ag/V2O5@C exhibited lower overpotential of 126 mV and 388 mV for hydrogen evolution (HER) and oxygen evolution reactions (OER) respectively. The lower tafel slope of 81 mV dec(-1) and 71 mV dec(-1) was attributed to the Ag/V2O5@C for HER and OER respectively. Ag/V2O5@C showed higher reaction kinetics due to the fast rate of charge transfer, low resistance, high conductivity, and greater active sites provided by the carbon dots for electrocatalytic reaction. So, Ag/V2O5@C can be employed as an effective electrocatalyst and electrode material for electrochemical applications.

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

2024

Confidentiality

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

Name of the periodical

FUEL

ISSN

0016-2361

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

10.2.2024

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

001153516900001

EID of the result in the Scopus database

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