Publication detail

Real Time Tracking of Nanoconfined Water-Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodes

KANDAMBATH PADINJAREVEETIL, A. PYKAL, M. BAKANDRITSOS, A. ZBOŘIL, R. OTYEPKA, M. PUMERA, M.

Original Title

Real Time Tracking of Nanoconfined Water-Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodes

Type

journal article in Web of Science

Language

English

Original Abstract

Water molecules confined in nanoscale spaces of 2D graphene layers have fascinated researchers worldwide for the past several years, especially in the context of energy storage applications. The water molecules exchanged along with ions during the electrochemical process can aid in wetting and stabilizing the layered materials resulting in an anomalous enhancement in the performance of supercapacitor electrodes. Engineering of 2D carbon electrode materials with various functionalities (oxygen (& horbar;O), fluorine (& horbar;F), nitrile (& horbar;C equivalent to N), carboxylic (& horbar;COOH), carbonyl (& horbar;C & boxH;O), nitrogen (& horbar;N)) can alter the ion/water organization in graphene derivatives, and eventually their inherent ion storage ability. Thus, in the current study, a comparative set of functionalized graphene derivatives-fluorine-doped cyanographene (G-F-CN), cyanographene (G-CN), graphene acid (G-COOH), oxidized graphene acid (G-COOH (O)) and nitrogen superdoped graphene (G-N) is systematically evaluated toward charge storage in various aqueous-based electrolyte systems. Differences in functionalization on graphene derivatives influence the electrochemical properties, and the real-time mass exchange during the electrochemical process is monitored by electrochemical quartz crystal microbalance (EQCM). Electrogravimetric assessment revealed that oxidized 2D acid derivatives (G-COOH (O)) are shown to exhibit high ion storage performance along with maximum water transfer during the electrochemical process. The complex understanding of the processes gained during supercapacitor electrode charging in aqueous electrolytes paves the way toward the rational utilization of graphene derivatives in forefront energy storage applications. Covalent functionalization and doping of graphene surfaces -featuring groups such as oxygen, cyano-, carbon-fluorine, carboxyl groups, and nitrogen heteroatoms- significantly affects water-assisted ion transfer as monitored with electrochemical quartz crystal microbalance, modulating the performance of supercapacitor electrodes. Such studies are crucial for advancing energy storage applications with a broader impact across electrochemistry-related technological domains. image

Keywords

confined water molecules; covalent functionalization; energy storage; EQCM; Graphene derivatives

Authors

KANDAMBATH PADINJAREVEETIL, A.; PYKAL, M.; BAKANDRITSOS, A.; ZBOŘIL, R.; OTYEPKA, M.; PUMERA, M.

Released

1. 10. 2024

Publisher

WILEY

Location

HOBOKEN

ISBN

2198-3844

Periodical

Advanced Science

Year of study

11

Number

39

State

United States of America

Pages from

1

Pages to

18

Pages count

18

URL

https://onlinelibrary.wiley.com/doi/10.1002/advs.202307583

Full text in the Digital Library

http://hdl.handle.net/11012/250790

BibTex

@article{BUT189925,
  author="Akshay Kumar {Kandambath Padinjareveetil} and Martin {Pykal} and Aristides {Bakandritsos} and Radek {Zbořil} and Michal {Otyepka} and Martin {Pumera}",
  title="Real Time Tracking of Nanoconfined Water-Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodes",
  journal="Advanced Science",
  year="2024",
  volume="11",
  number="39",
  pages="18",
  doi="10.1002/advs.202307583",
  issn="2198-3844",
  url="https://onlinelibrary.wiley.com/doi/10.1002/advs.202307583"
}