Graphene with Covalently Grafted Amino Acid as a Route Toward Eco-Friendly and Sustainable Supercapacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247747" target="_blank" >RIV/61989100:27640/21:10247747 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/21:10247747 RIV/61989592:15640/21:73608076 RIV/61989592:15310/21:73608076

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.202101039" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.202101039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cssc.202101039" target="_blank" >10.1002/cssc.202101039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Graphene with Covalently Grafted Amino Acid as a Route Toward Eco-Friendly and Sustainable Supercapacitors

Popis výsledku v původním jazyce

Eco-friendly, electrochemically active electrode materials based on covalent graphene derivatives offer enormous potential for energy storage applications. However, covalent grafting of functional groups onto the graphene surface is challenging due to its low reactivity. Here, fluorographene chemistry was employed to graft an arginine moiety via its guanidine group homogeneously on both sides of graphene. By tuning the reaction conditions and adding a non-toxic pore-forming agent, an optimum degree of functionalization and hierarchical porosity was achieved in the material. This tripled the specific surface area and yielded a high capacitance value of approximately 390 F gMINUS SIGN 1 at a current density of 0.25 A gMINUS SIGN 1. The applicability of the electrode material was investigated under typical operating conditions by testing an assembled supercapacitor device for up to 30000 charging/discharging cycles, revealing capacitance retention of 82.3 %. This work enables the preparation of graphene derivatives with covalently grafted amino acids for technologically important applications, such as supercapacitor-based energy storage. (C) 2021 The Authors. ChemSusChem published by Wiley-VCH GmbH

Název v anglickém jazyce

Graphene with Covalently Grafted Amino Acid as a Route Toward Eco-Friendly and Sustainable Supercapacitors

Popis výsledku anglicky

Eco-friendly, electrochemically active electrode materials based on covalent graphene derivatives offer enormous potential for energy storage applications. However, covalent grafting of functional groups onto the graphene surface is challenging due to its low reactivity. Here, fluorographene chemistry was employed to graft an arginine moiety via its guanidine group homogeneously on both sides of graphene. By tuning the reaction conditions and adding a non-toxic pore-forming agent, an optimum degree of functionalization and hierarchical porosity was achieved in the material. This tripled the specific surface area and yielded a high capacitance value of approximately 390 F gMINUS SIGN 1 at a current density of 0.25 A gMINUS SIGN 1. The applicability of the electrode material was investigated under typical operating conditions by testing an assembled supercapacitor device for up to 30000 charging/discharging cycles, revealing capacitance retention of 82.3 %. This work enables the preparation of graphene derivatives with covalently grafted amino acids for technologically important applications, such as supercapacitor-based energy storage. (C) 2021 The Authors. ChemSusChem published by Wiley-VCH GmbH

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

3904-3914

Kód UT WoS článku

000685859600001

EID výsledku v databázi Scopus

2-s2.0-85112773814