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 a Libuše TRNKOVÁ

Základní údaje

Originální název

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

Autoři

LI, Xiaochun (156 Čína, domácí), Iveta TŘÍSKOVÁ (203 Česká republika, domácí) a Libuše TRNKOVÁ (203 Česká republika, domácí)

Vydání

Electrochimica Acta, Elsevier, 2023, 0013-4686

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

20402 Chemical process engineering

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 6.600 v roce 2022

Kód RIV

RIV/00216224:14310/23:00130410

Organizační jednotka

Přírodovědecká fakulta

DOI

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

UT WoS

000927474600001

Klíčová slova anglicky

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

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 30. 1. 2024 20:33, Mgr. Pavla Foltynová, Ph.D.

Anotace

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.

Návaznosti

MUNI/A/1421/2022, interní kód MU

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

Investor: Masarykova univerzita, Vývoj metod a instrumentace pro analýzu biologicky významných látek 2023

MUNI/A/1539/2021, interní kód MU

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

Investor: Masarykova univerzita, Vývoj metod a instrumentace pro analýzu biologicky významných látek 2022

8J21FR023, projekt VaV

Název: Nanokompozitní povrchové modifikace ZnO elektrod (Akronym: Nanokompozity ZnO)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Nanokompozitní povrchové modifikace ZnO elektrod, Francie

Citovat

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

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