Elucidation of the role of electrolyte nature on electrochemical performance of PANI in energy storage device

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F24%3A00578602" target="_blank" >RIV/61389013:_____/24:00578602 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/24:10473036

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2352152X23030700?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352152X23030700?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.est.2023.109672" target="_blank" >10.1016/j.est.2023.109672</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Elucidation of the role of electrolyte nature on electrochemical performance of PANI in energy storage device

Popis výsledku v původním jazyce

To minimize the number of cells during the construction of a device, the working voltage of each cell must be as high as possible. Obtaining an aqueous electrolyte based electrochemical cell with high cell operating voltage is challenging due to the low standard reduction potential of water. The current work shows the effect of the nature and concentration of the electrolyte on the structure of water and its electrochemical stability. A symmetrical PANI cell was constructed in the presence of different electrolytes. It is demonstrated that utilizing ions with high solvation ability (chaotropic ions) and the formation of hydronium/Zundel ions enables the amount of free water to be reduced. As a result, there are no side reactions on the electrodes related to the electrolysis of water, and the main electrochemical reaction contributing to the cell capacity predominates. Moreover, by choosing the appropriate electrolyte it is possible to control the battery or capacitance-like behavior of PANI. The electrochemical performance of a symmetrical PANI cell shows a promising energy density of 7.5 Wh/kg at a power density of 150 kW/kg. The superior electrochemical performance (capacity) is retained after 50 cycles in a potential window of 5 V. It is interesting to highlight that, according to Raman spectroscopy, PANI maintains its chemical stability in a 5 V potential window.

Název v anglickém jazyce

Elucidation of the role of electrolyte nature on electrochemical performance of PANI in energy storage device

Popis výsledku anglicky

To minimize the number of cells during the construction of a device, the working voltage of each cell must be as high as possible. Obtaining an aqueous electrolyte based electrochemical cell with high cell operating voltage is challenging due to the low standard reduction potential of water. The current work shows the effect of the nature and concentration of the electrolyte on the structure of water and its electrochemical stability. A symmetrical PANI cell was constructed in the presence of different electrolytes. It is demonstrated that utilizing ions with high solvation ability (chaotropic ions) and the formation of hydronium/Zundel ions enables the amount of free water to be reduced. As a result, there are no side reactions on the electrodes related to the electrolysis of water, and the main electrochemical reaction contributing to the cell capacity predominates. Moreover, by choosing the appropriate electrolyte it is possible to control the battery or capacitance-like behavior of PANI. The electrochemical performance of a symmetrical PANI cell shows a promising energy density of 7.5 Wh/kg at a power density of 150 kW/kg. The superior electrochemical performance (capacity) is retained after 50 cycles in a potential window of 5 V. It is interesting to highlight that, according to Raman spectroscopy, PANI maintains its chemical stability in a 5 V potential window.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/NU20-06-00424" target="_blank" >NU20-06-00424: Implantabilní senzory pro včasnou detekci zánětu a bakteriální kolonizace</a><br>

Návaznosti

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

Rok uplatnění

2024

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

76

Číslo periodika v rámci svazku

15 January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

109672

Kód UT WoS článku

001124312100001

EID výsledku v databázi Scopus

2-s2.0-85177834968