Ultrafast high-capacitance supercapacitors employing carbons derived from Al-based metal-organic frameworks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73625106" target="_blank" >RIV/61989592:15640/24:73625106 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2405829724002915?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2405829724002915?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ensm.2024.103464" target="_blank" >10.1016/j.ensm.2024.103464</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultrafast high-capacitance supercapacitors employing carbons derived from Al-based metal-organic frameworks

Popis výsledku v původním jazyce

Compact supercapacitors (SCs) have garnered significant attention due to their potential to replace bulky aluminum electrolytic capacitors (AECs) in alternating current (AC) line filtering applications. However, the slow response speeds of conventional SCs based on activated carbons are inadequate for such high-frequency applications. Therefore, this paper presents a study on high-frequency SCs using metal-organic framework (MOF)-derived carbon (MDC) electrode materials. Here, the carbonization of the selected MOF results in highly conductive carbons with hierarchical pore structures that offer substantial advantages for use as electrode materials in ultrafast SC applications. Consequently, the as-fabricated MDC SCs exhibit significant areal and volumetric capacitances of 2.41 mF cm–2 and 5.74 F cm–3, respectively, at 120 Hz, coupled with a rapid response speed indicated by a phase angle of –80.1°. Notably, this performance is superior to that of the state-of-the-art high-frequency SCs based on carbon materials. The results underscore the potential of MDCs as electrode materials for use in ultrafast SCs, with eventual implications for the miniaturization of electronic devices.

Název v anglickém jazyce

Ultrafast high-capacitance supercapacitors employing carbons derived from Al-based metal-organic frameworks

Popis výsledku anglicky

Compact supercapacitors (SCs) have garnered significant attention due to their potential to replace bulky aluminum electrolytic capacitors (AECs) in alternating current (AC) line filtering applications. However, the slow response speeds of conventional SCs based on activated carbons are inadequate for such high-frequency applications. Therefore, this paper presents a study on high-frequency SCs using metal-organic framework (MOF)-derived carbon (MDC) electrode materials. Here, the carbonization of the selected MOF results in highly conductive carbons with hierarchical pore structures that offer substantial advantages for use as electrode materials in ultrafast SC applications. Consequently, the as-fabricated MDC SCs exhibit significant areal and volumetric capacitances of 2.41 mF cm–2 and 5.74 F cm–3, respectively, at 120 Hz, coupled with a rapid response speed indicated by a phase angle of –80.1°. Notably, this performance is superior to that of the state-of-the-art high-frequency SCs based on carbon materials. The results underscore the potential of MDCs as electrode materials for use in ultrafast SCs, with eventual implications for the miniaturization of electronic devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Energy Storage Materials

ISSN

2405-8297

e-ISSN

—

Svazek periodika

70

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001243268500001

EID výsledku v databázi Scopus

2-s2.0-85193077834