Carbon framework modification; an interesting strategy to improve the energy storage and dye adsorption

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10255422" target="_blank" >RIV/61989100:27360/24:10255422 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/ya/d4ya00159a" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/ya/d4ya00159a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ya00159a" target="_blank" >10.1039/d4ya00159a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Carbon framework modification; an interesting strategy to improve the energy storage and dye adsorption

Popis výsledku v původním jazyce

Porous carbons find various applications, including as adsorbents for clean water production and as electrode materials in energy storage devices such as supercapacitors. While supercapacitors reach higher power densities than batteries, they are less widely used, as their energy density is lower. We present a low-temperature wet ultrasonochemical synthesis technique to modify the surface of activated carbon with 1 wt% Cu nanoparticles. We analyzed the modified carbon using X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy and confirmed the composite formation by N2 adsorption-desorption isotherms at 77 K. For comparison, we did the same tests on pristine carbon. We used the modified carbon as an electrode material in a home-built supercapacitor filled with gel polymer electrolyte and as an absorbent of Malachite green dye. In both applications, the modified carbon performed substantially better than its pristine counterpart. The modified-carbon supercapacitor exhibited a single electrode-specific capacitance of approximately 68.9 F gMINUS SIGN 1. It also demonstrated an energy density of 9.8 W h kgMINUS SIGN 1 and a power density of 1.4 kW kgMINUS SIGN 1. These values represent improvements over the pristine-carbon supercapacitor, with increases of 25.7 F gMINUS SIGN 1 in capacitance, 3.8 W h kgMINUS SIGN 1 in energy density, and 0.5 kW kgMINUS SIGN 1 in power density. After 10 000 charging-discharging cycles, the capacitance of the modified-carbon supercapacitor decreased by approximately 10%, indicating good durability of the material. We found that the modified carbon&apos;s absorbance capacity for Malachite dye is more than that of the pristine carbon; the adsorption capacity value was TILDE OPERATOR+D91153.16 mg gMINUS SIGN 1 for modified carbon with pseudo-second kinetic order, in accordance with the Redlich-Peterson adsorption model. (C) 2024 RSC.

Název v anglickém jazyce

Carbon framework modification; an interesting strategy to improve the energy storage and dye adsorption

Popis výsledku anglicky

Porous carbons find various applications, including as adsorbents for clean water production and as electrode materials in energy storage devices such as supercapacitors. While supercapacitors reach higher power densities than batteries, they are less widely used, as their energy density is lower. We present a low-temperature wet ultrasonochemical synthesis technique to modify the surface of activated carbon with 1 wt% Cu nanoparticles. We analyzed the modified carbon using X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy and confirmed the composite formation by N2 adsorption-desorption isotherms at 77 K. For comparison, we did the same tests on pristine carbon. We used the modified carbon as an electrode material in a home-built supercapacitor filled with gel polymer electrolyte and as an absorbent of Malachite green dye. In both applications, the modified carbon performed substantially better than its pristine counterpart. The modified-carbon supercapacitor exhibited a single electrode-specific capacitance of approximately 68.9 F gMINUS SIGN 1. It also demonstrated an energy density of 9.8 W h kgMINUS SIGN 1 and a power density of 1.4 kW kgMINUS SIGN 1. These values represent improvements over the pristine-carbon supercapacitor, with increases of 25.7 F gMINUS SIGN 1 in capacitance, 3.8 W h kgMINUS SIGN 1 in energy density, and 0.5 kW kgMINUS SIGN 1 in power density. After 10 000 charging-discharging cycles, the capacitance of the modified-carbon supercapacitor decreased by approximately 10%, indicating good durability of the material. We found that the modified carbon&apos;s absorbance capacity for Malachite dye is more than that of the pristine carbon; the adsorption capacity value was TILDE OPERATOR+D91153.16 mg gMINUS SIGN 1 for modified carbon with pseudo-second kinetic order, in accordance with the Redlich-Peterson adsorption model. (C) 2024 RSC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Energy Advances

ISSN

2753-1457

e-ISSN

2753-1457

Svazek periodika

3

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

1354-1366

Kód UT WoS článku

001221209300001

EID výsledku v databázi Scopus

2-s2.0-85193465095