Fabrication and floating test of an asymmetric supercapacitor based on polyaniline and MXene

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F23%3A63570098" target="_blank" >RIV/70883521:28610/23:63570098 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0379677923002126?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0379677923002126?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.synthmet.2023.117490" target="_blank" >10.1016/j.synthmet.2023.117490</a>

Result language

angličtina

Original language name

Fabrication and floating test of an asymmetric supercapacitor based on polyaniline and MXene

Original language description

Polyaniline (PANI) exhibits considerable capacitance at positive potentials in acidic aqueous electrolytes, making it a highly promising pseudocapacitive material. Nevertheless, the absence of appropriate anode materials capable of effectively functioning at negative potentials in its asymmetric supercapacitors hinders the ability to increase the cell voltage, thereby impacting the specific energy. To address this issue, MXene (Ti3C2Tx) was utilized due to its proven efficacy in mitigating hydrogen evolution at highly negative potentials in acidic aqueous electrolytes. In this study, we fabricated an asymmetric supercapacitor consisting of a PANI nanorod array deposited on bacterial cellulose (BC) membrane and a MXene/carbon nanotube (MXene/CNT) film. The device can operate at a cell voltage of 1.3 V and exhibits exceptional specific energy and specific power (12.1 Wh kg−1/0.4 kW kg1 and 7.9 Wh kg−1/1.7 kW kg−1). It demonstrates excellent cycling performance, with a capacitance retention rate of 96% after 2000 galvanostatic charge/discharge (GCD) cycles. In addition, one practical and reliable approach, the floating test, was applied to assess the stability of this asymmetric supercapacitor. It also maintains 82% of its initial capacitance after 60 h of floating time. Our findings indicate that the combination of PANI and MXene in an asymmetric configuration represents a promising approach for the development of next-generation PANI-based supercapacitors.

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

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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Synthetic Metals

ISSN

0379-6779

e-ISSN

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Volume of the periodical

300

Issue of the periodical within the volume

Neuveden

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

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UT code for WoS article

001108359900001

EID of the result in the Scopus database

2-s2.0-85175154430