Maximizing the electrochemical performance of supercapacitor electrodes from plastic waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F23%3A10252965" target="_blank" >RIV/61989100:27350/23:10252965 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/23:73620076 RIV/61989592:15640/23:73620076 RIV/61989100:27360/23:10252965 RIV/61989100:27740/23:10252965

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2352152X23020571" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352152X23020571</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.est.2023.108660" target="_blank" >10.1016/j.est.2023.108660</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Maximizing the electrochemical performance of supercapacitor electrodes from plastic waste

Popis výsledku v původním jazyce

The management of the increasing volume of plastic waste has become a key challenge for society. A promising strategy now consists in the transformation of plastic waste into high-value materials that can be utilized in energy storage devices such as batteries and supercapacitors. In this study, we demonstrate a two-step procedure, involving pyrolysis, followed by chemical activation that will convert common plastic waste into activated carbons (ACs). This technique makes ACs suitable for supercapacitor electrode materials. Further, the electrochemical performance of ACs is outstanding in terms of capacitance, energy density, and cycling stability. Besides the well-established parameters, including a specific surface area and micropore volume, we found that other critical factors such as polymer glass transition temperature, polymer-activating agent miscibility, activating agent (K2CO3):AC ratio, and AC water dispersion stability also play a crucial role in determining the supercapacitors performance. Controlling these parameters, we obtained ACs as supercapacitor electrodes from a range of plastic waste materials with a competitive electrochemical performance. Specifically, the ACs exhibited a specific capacitance of 220 F gMINUS SIGN 1 (at a current density of 1 A gMINUS SIGN 1), energy and power densities of 61.1 Wh kgMINUS SIGN 1 and 36.9 kW kgMINUS SIGN 1, respectively, and excellent cycling stability (95 % retention after 30,000 cycles). Our findings provide a pathway towards transforming plastic waste into valuable electrode materials for supercapacitors.

Název v anglickém jazyce

Maximizing the electrochemical performance of supercapacitor electrodes from plastic waste

Popis výsledku anglicky

The management of the increasing volume of plastic waste has become a key challenge for society. A promising strategy now consists in the transformation of plastic waste into high-value materials that can be utilized in energy storage devices such as batteries and supercapacitors. In this study, we demonstrate a two-step procedure, involving pyrolysis, followed by chemical activation that will convert common plastic waste into activated carbons (ACs). This technique makes ACs suitable for supercapacitor electrode materials. Further, the electrochemical performance of ACs is outstanding in terms of capacitance, energy density, and cycling stability. Besides the well-established parameters, including a specific surface area and micropore volume, we found that other critical factors such as polymer glass transition temperature, polymer-activating agent miscibility, activating agent (K2CO3):AC ratio, and AC water dispersion stability also play a crucial role in determining the supercapacitors performance. Controlling these parameters, we obtained ACs as supercapacitor electrodes from a range of plastic waste materials with a competitive electrochemical performance. Specifically, the ACs exhibited a specific capacitance of 220 F gMINUS SIGN 1 (at a current density of 1 A gMINUS SIGN 1), energy and power densities of 61.1 Wh kgMINUS SIGN 1 and 36.9 kW kgMINUS SIGN 1, respectively, and excellent cycling stability (95 % retention after 30,000 cycles). Our findings provide a pathway towards transforming plastic waste into valuable electrode materials for supercapacitors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Energy Storage

ISSN

2352-152X

e-ISSN

2352-1538

Svazek periodika

72

Číslo periodika v rámci svazku

NOV 30 2023

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001059381800001

EID výsledku v databázi Scopus

2-s2.0-85168795445