An insight Into Surface and Diffusion Characteristics of UiO-66@ZIF-8 Core–Shell MOF for Asymmetric Supercapacitors with Unprecedented Energy Density

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F24%3A73625123" target="_blank" >RIV/61989592:15640/24:73625123 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400043" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400043</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adsu.202400043" target="_blank" >10.1002/adsu.202400043</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An insight Into Surface and Diffusion Characteristics of UiO-66@ZIF-8 Core–Shell MOF for Asymmetric Supercapacitors with Unprecedented Energy Density

Popis výsledku v původním jazyce

In this study, nanosized zeolitic imidazolate framework-8 (ZIF-8) crystal has been produced on the universitetet i oslo-66 (UiO-66) metal-organic framework (MOF) to make core-shell structure using a layer-by-layer deposition method. In comparison to the pristine UiO-66 and ZIF-8, the core-shell MOF exhibits superior performance in terms of specific capacitance. This enhanced performance is attributed to its remarkable ability to facilitate the rapid diffusion of electrolyte ions through nanosized ZIF-8 and enhance the electron transfer process involving the inner and outer metal ions within the UiO-66@ZIF-8 structure. Remarkably, the core-shell structure achieves an impressive specific capacitance of 588.8 F g-1 at a current density of 0.5 A g-1 using 1 m sulfuric acid (H2SO4) aqueous electrolyte. Additionally, the UiO-66@ZIF-8 core-shell material is demonstrated as a positive electrode, coupled with activated carbon (AC) derived from waste tissue paper serving as the negative electrode, in the fabrication of an asymmetric supercapacitor (ASC) device. At a power density of 400 W kg-1, this assembled asymmetric device delivers a notably high energy density of 53 Wh kg-1 along with a cyclic stability of 94.8% after 10 000 cycles. This study substantiates the superior performance of the UiO-66@ZIF-8 core-shell MOF structure as a highly effective supercapacitor electrode material, surpassing the performance of its pristine MOF counterparts.

Název v anglickém jazyce

An insight Into Surface and Diffusion Characteristics of UiO-66@ZIF-8 Core–Shell MOF for Asymmetric Supercapacitors with Unprecedented Energy Density

Popis výsledku anglicky

In this study, nanosized zeolitic imidazolate framework-8 (ZIF-8) crystal has been produced on the universitetet i oslo-66 (UiO-66) metal-organic framework (MOF) to make core-shell structure using a layer-by-layer deposition method. In comparison to the pristine UiO-66 and ZIF-8, the core-shell MOF exhibits superior performance in terms of specific capacitance. This enhanced performance is attributed to its remarkable ability to facilitate the rapid diffusion of electrolyte ions through nanosized ZIF-8 and enhance the electron transfer process involving the inner and outer metal ions within the UiO-66@ZIF-8 structure. Remarkably, the core-shell structure achieves an impressive specific capacitance of 588.8 F g-1 at a current density of 0.5 A g-1 using 1 m sulfuric acid (H2SO4) aqueous electrolyte. Additionally, the UiO-66@ZIF-8 core-shell material is demonstrated as a positive electrode, coupled with activated carbon (AC) derived from waste tissue paper serving as the negative electrode, in the fabrication of an asymmetric supercapacitor (ASC) device. At a power density of 400 W kg-1, this assembled asymmetric device delivers a notably high energy density of 53 Wh kg-1 along with a cyclic stability of 94.8% after 10 000 cycles. This study substantiates the superior performance of the UiO-66@ZIF-8 core-shell MOF structure as a highly effective supercapacitor electrode material, surpassing the performance of its pristine MOF counterparts.

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

Advanced Sustainable Systems

ISSN

2366-7486

e-ISSN

2366-7486

Svazek periodika

8

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

001227424500001

EID výsledku v databázi Scopus

2-s2.0-85193327339