Instantaneous reduction of inkjet-printed graphene oxide on PVDF nanofibers for high-performance ultralight flexible supercapacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F24%3A00012492" target="_blank" >RIV/46747885:24410/24:00012492 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.polymertesting.2024.108526" target="_blank" >https://doi.org/10.1016/j.polymertesting.2024.108526</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymertesting.2024.108526" target="_blank" >10.1016/j.polymertesting.2024.108526</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Instantaneous reduction of inkjet-printed graphene oxide on PVDF nanofibers for high-performance ultralight flexible supercapacitors

Popis výsledku v původním jazyce

In this paper, utilizing an instantaneous in-situ reduction method, rGO is printed onto PVDF nanofibers with RIP technology to fabricate ultralight flexible all-solid-state supercapacitors. With an increasing number of printing passes, the surface resistance of the printed rGO layers consistently decreased, reaching a plateau after five printing passes. Through EDX, FTIR/Raman, and XPS analyses, it has been confirmed that the majority of oxygenated functional groups in GO were effectively reduced instantaneously by AA. This restoration of electrical conductivity in rGO lays a solid foundation for its subsequent electrochemical performance. From CV curves, the electrode 1rGO/PVDF performed the best capacitance 85.66 F/g at 10 mV/s, significantly higher than 3rGO/PVDF and 5rGO/PVDF under the same scanning rate, and the electrode displayed a good flexible ability. The obtained specific capacitance of 1rGO/PVDF electrode was founded of 83.29 F/g at a current density of 2 A/g from the GCD analysis with a corresponding energy density of 7.5 Wh kg−1 and power density of 1.04 kW kg−1, which is an improved value over many other reported results. In addition, the rGO/PVDF electrode demonstrates strong cycle stability, retaining 93% efficiency after 4000 charge-discharge cycles at 2 A/g current density, suggesting its exceptional electrochemical stability.

Název v anglickém jazyce

Instantaneous reduction of inkjet-printed graphene oxide on PVDF nanofibers for high-performance ultralight flexible supercapacitors

Popis výsledku anglicky

In this paper, utilizing an instantaneous in-situ reduction method, rGO is printed onto PVDF nanofibers with RIP technology to fabricate ultralight flexible all-solid-state supercapacitors. With an increasing number of printing passes, the surface resistance of the printed rGO layers consistently decreased, reaching a plateau after five printing passes. Through EDX, FTIR/Raman, and XPS analyses, it has been confirmed that the majority of oxygenated functional groups in GO were effectively reduced instantaneously by AA. This restoration of electrical conductivity in rGO lays a solid foundation for its subsequent electrochemical performance. From CV curves, the electrode 1rGO/PVDF performed the best capacitance 85.66 F/g at 10 mV/s, significantly higher than 3rGO/PVDF and 5rGO/PVDF under the same scanning rate, and the electrode displayed a good flexible ability. The obtained specific capacitance of 1rGO/PVDF electrode was founded of 83.29 F/g at a current density of 2 A/g from the GCD analysis with a corresponding energy density of 7.5 Wh kg−1 and power density of 1.04 kW kg−1, which is an improved value over many other reported results. In addition, the rGO/PVDF electrode demonstrates strong cycle stability, retaining 93% efficiency after 4000 charge-discharge cycles at 2 A/g current density, suggesting its exceptional electrochemical stability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

<a href="/cs/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybridní materiály pro hierarchické struktury</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Polymer Testing

ISSN

0142-9418

e-ISSN

—

Svazek periodika

137

Číslo periodika v rámci svazku

AUG

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

001278876300001

EID výsledku v databázi Scopus

2-s2.0-85199184991