Unraveling the Surface-Diffusion Charge Contribution Studies of Zeolitic-Imidazolate-Frameworks-Based Core-Shell Structure for High-Performance Hybrid Supercapacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73625972" target="_blank" >RIV/61989592:15640/24:73625972 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/ente.202400722" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/ente.202400722</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ente.202400722" target="_blank" >10.1002/ente.202400722</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unraveling the Surface-Diffusion Charge Contribution Studies of Zeolitic-Imidazolate-Frameworks-Based Core-Shell Structure for High-Performance Hybrid Supercapacitors

Popis výsledku v původním jazyce

In this work, zeolitic imidazolate frameworks (ZIF-8@ZIF-67)-based core-shell structure as a supercapacitor electrode is synthesized. The core-shell structure is designed with a ZIF-8 core, onto which a ZIF-67 shell is grown. This unique architecture aims to expedite the diffusion of electrolyte ions, facilitate inner-outer metal ion electron transfer, and consequently enhance electrochemical performance. When used as an active electrode material, the material delivers 263.43 F g-1 of capacitance at 0.5 A g-1 of discharge rate. The core-shell structure exhibits 68% of surface contribution toward the total capacitance. At the scan rate of 50 mV s-1, the sample almost exhibits equal contribution of diffusion and surface charge contribution. Further an asymmetric supercapacitor (ASC) device is assembled, featuring a ZIF-8@ZIF-67 core-shell metal-organic framework (MOF) as a positive electrode and waste-tissue-paper-derived activated carbon as negative electrode using 1 m H2SO4 aqueous electrolyte. The ASC device delivers an energy density of 38.4 Wh kg-1 at the power density of 0.8 kW kg-1, along with long cycle life of 95.2% after an extensive 10 000 cycles. In this work, the significance of the ZIF-based core-shell structure in advancing supercapacitor technology, which further can be extended to multiple core-shell structure and other MOF combination, is highlighted.

Název v anglickém jazyce

Unraveling the Surface-Diffusion Charge Contribution Studies of Zeolitic-Imidazolate-Frameworks-Based Core-Shell Structure for High-Performance Hybrid Supercapacitors

Popis výsledku anglicky

In this work, zeolitic imidazolate frameworks (ZIF-8@ZIF-67)-based core-shell structure as a supercapacitor electrode is synthesized. The core-shell structure is designed with a ZIF-8 core, onto which a ZIF-67 shell is grown. This unique architecture aims to expedite the diffusion of electrolyte ions, facilitate inner-outer metal ion electron transfer, and consequently enhance electrochemical performance. When used as an active electrode material, the material delivers 263.43 F g-1 of capacitance at 0.5 A g-1 of discharge rate. The core-shell structure exhibits 68% of surface contribution toward the total capacitance. At the scan rate of 50 mV s-1, the sample almost exhibits equal contribution of diffusion and surface charge contribution. Further an asymmetric supercapacitor (ASC) device is assembled, featuring a ZIF-8@ZIF-67 core-shell metal-organic framework (MOF) as a positive electrode and waste-tissue-paper-derived activated carbon as negative electrode using 1 m H2SO4 aqueous electrolyte. The ASC device delivers an energy density of 38.4 Wh kg-1 at the power density of 0.8 kW kg-1, along with long cycle life of 95.2% after an extensive 10 000 cycles. In this work, the significance of the ZIF-based core-shell structure in advancing supercapacitor technology, which further can be extended to multiple core-shell structure and other MOF combination, is highlighted.

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 Technology

ISSN

2194-4288

e-ISSN

2194-4296

Svazek periodika

12

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

001272329500001

EID výsledku v databázi Scopus

2-s2.0-85198993246