A new experimental approach to understanding microscopic
details of the electrode/electrolyte interface

J 2023

A new experimental approach to understanding microscopic details of the electrode/electrolyte interface

LI, Xiaochun, Iveta TŘÍSKOVÁ and Libuše TRNKOVÁ

Basic information

Original name

A new experimental approach to understanding microscopic details of the electrode/electrolyte interface

Authors

LI, Xiaochun (156 China, belonging to the institution), Iveta TŘÍSKOVÁ (203 Czech Republic, belonging to the institution) and Libuše TRNKOVÁ (203 Czech Republic, belonging to the institution)

Edition

Electrochimica Acta, Elsevier, 2023, 0013-4686

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

20402 Chemical process engineering

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 6.600 in 2022

RIV identification code

RIV/00216224:14310/23:00130410

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.electacta.2023.141921

UT WoS

000927474600001

Keywords in English

Pencil graphite electrode; Cyclic voltammetry; [Fe(CN)6]3-; 4-Elimination voltammetry; Outer-sphere electron transfer; The Nicholson method

Abstract

V originále

The article contributes to understanding the microscopic details of the electrochemical interphase and the electron transfer mechanism in a real experiment. The dynamic responses of the electrical phase interface were monitored via cyclic voltammetry of [Fe(CN)6]3-/4- on a pencil graphite electrode in an aqueous KCl solution, and the CV recordings were evaluated using elimination linear scan voltammetry (EVLS). The voltammetric data processing EVLS software, derived primarily for the reversible system, is capable of describing and distinguishing the diffusion, capacitance, and kinetic contributions of these current components. Based on the EVLS functions which eliminate the diffusion and charging current components or the diffusion and kinetic current components, we performed a detailed analysis of the state where the electronics meet the ionics. An emphasis was placed on the relationship between the dynamic response of the electric double layer and (a) the material of the graphite electrode, (b) the concentration of the [Fe(CN)6]3-/4-, (c) the concentration of the KCl, and (d) the presence or absence of oxygen in the solution. Our new approach to evaluating voltammetric data is characterized by experiments that promote understanding the electrochemical processes, influenced especially by changes in the electrical double layer. The results open a perspective of further research to facilitate a rational clarification and optimization of electrode processes.

Links

MUNI/A/1421/2022, interní kód MU

Name: Vývoj metod a instrumentace pro analýzu biologicky významných látek 2023

Investor: Masaryk University

MUNI/A/1539/2021, interní kód MU

Name: Vývoj metod a instrumentace pro analýzu biologicky významných látek 2022

Investor: Masaryk University

8J21FR023, research and development project

Name: Nanokompozitní povrchové modifikace ZnO elektrod (Acronym: Nanokompozity ZnO)

Investor: Ministry of Education, Youth and Sports of the CR, France

Citovat

LI, Xiaochun, Iveta TŘÍSKOVÁ and Libuše TRNKOVÁ. A new experimental approach to understanding microscopic details of the electrode/electrolyte interface. Electrochimica Acta. Elsevier, 2023, vol. 442, February, p. 1-11. ISSN 0013-4686. Available from: https://dx.doi.org/10.1016/j.electacta.2023.141921.

@article{2264318,
   author = {Li, Xiaochun and Třísková, Iveta and Trnková, Libuše},
   article_number = {February},
   doi = {http://dx.doi.org/10.1016/j.electacta.2023.141921},
   keywords = {Pencil graphite electrode; Cyclic voltammetry; [Fe(CN)6]3-; 4-Elimination voltammetry; Outer-sphere electron transfer; The Nicholson method},
   language = {eng},
   issn = {0013-4686},
   journal = {Electrochimica Acta},
   title = {A new experimental approach to understanding microscopic details of the electrode/electrolyte interface},
   url = {https://doi.org/10.1016/j.electacta.2023.141921},
   volume = {442},
   year = {2023}
}

TY  - JOUR
ID  - 2264318
AU  - Li, Xiaochun - Třísková, Iveta - Trnková, Libuše
PY  - 2023
TI  - A new experimental approach to understanding microscopic details of the electrode/electrolyte interface
JF  - Electrochimica Acta
VL  - 442
IS  - February
SP  - 1-11
EP  - 1-11
PB  - Elsevier
SN  - 00134686
KW  - Pencil graphite electrode
KW  - Cyclic voltammetry
KW  - [Fe(CN)6]3-
KW  - 4-Elimination voltammetry
KW  - Outer-sphere electron transfer
KW  - The Nicholson method
UR  - https://doi.org/10.1016/j.electacta.2023.141921
N2  - The article contributes to understanding the microscopic details of the electrochemical interphase and the electron transfer mechanism in a real experiment. The dynamic responses of the electrical phase interface were monitored via cyclic voltammetry of [Fe(CN)6]3-/4- on a pencil graphite electrode in an aqueous KCl solution, and the CV recordings were evaluated using elimination linear scan voltammetry (EVLS). The voltammetric data processing EVLS software, derived primarily for the reversible system, is capable of describing and distinguishing the diffusion, capacitance, and kinetic contributions of these current components. Based on the EVLS functions which eliminate the diffusion and charging current components or the diffusion and kinetic current components, we performed a detailed analysis of the state where the electronics meet the ionics. An emphasis was placed on the relationship between the dynamic response of the electric double layer and (a) the material of the graphite electrode, (b) the concentration of the [Fe(CN)6]3-/4-, (c) the concentration of the KCl, and (d) the presence or absence of oxygen in the solution. Our new approach to evaluating voltammetric data is characterized by experiments that promote understanding the electrochemical processes, influenced especially by changes in the electrical double layer. The results open a perspective of further research to facilitate a rational clarification and optimization of electrode processes.
ER  -

LI, Xiaochun, Iveta TŘÍSKOVÁ and Libuše TRNKOVÁ. A new experimental approach to understanding microscopic details of the electrode/electrolyte interface. \textit{Electrochimica Acta}. Elsevier, 2023, vol.~442, February, p.~1-11. ISSN~0013-4686. Available from: https://dx.doi.org/10.1016/j.electacta.2023.141921.

Detailed Information on Publication Record