Boosting the electrochemical activities of MnO2 for next-generation supercapacitor application: Adaptation of multiple approaches

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F23%3AA2402LEG" target="_blank" >RIV/61988987:17310/23:A2402LEG - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0016236123005598?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236123005598?via%3Dihub</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Boosting the electrochemical activities of MnO2 for next-generation supercapacitor application: Adaptation of multiple approaches

Original language description

A novel Ag-MnO2/MXene on nickel foam (Ag-MnO2/MXene@NF) electrode has been developed by incorporating hydrothermal and post-sonication processes. Ag-doping, MXene reinforcement, nanotechnology approaches, and highly porous current collector (Nickel foam) play a decisive role in boosting the overall activity of the Ag-MnO2/MXene@NF. The Ag-doping tunes the band structure of MnO2 and intrinsically improves its specific conductivity. At the same time, the sandwiching of Ag-MnO2 NWs between the MXene sheet's voids and their dispersion over the MXene sheet's surface led to the formation of a hetero-structured composite with superb conductivity, a high surface area, lower crystallinity, and structural openings. The nanostructured nature of MnO2 (NWs) and their addition to MXene, a conductive and porous matrix, resulted in better capacitance retention and faster ion diffusion. The nano-sized and spongy structure of the Ag-MnO2/MXene@NF not only exposes the bulk of the electrode for charge storage but also buffers the electrode from pulverization as a result of tedious cyclic tests and facilitates the electrolyte ions' mobility. These induced features enabled the Ag-MnO2/MXene@NF to show a higher capacitance of 1188 F g(-1) @ 1Ag(-1), impressive rate capability (85.8 % @9 A g(-1)), and superb cyclic activity of 96.4 % after 6000 tests. The combination of various techniques boosts the overall electrochemical performance of our developed Ag-MnO2/MXene electrode, making it an acceptable option for use in advanced energy storage devices.

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

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

127946

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1-12

UT code for WoS article

001005611000001

EID of the result in the Scopus database

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