Redox Property Tuning in Bipyridinium Salts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923477" target="_blank" >RIV/60461373:22310/21:43923477 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/21:39917639 RIV/60461373:22330/21:43923477 RIV/60461373:22340/21:43923477

Výsledek na webu

<a href="https://www.frontiersin.org/articles/10.3389/fchem.2020.631477/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fchem.2020.631477/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fchem.2020.631477" target="_blank" >10.3389/fchem.2020.631477</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Redox Property Tuning in Bipyridinium Salts

Popis výsledku v původním jazyce

Bipyridinium salts are currently very popular due to their perspective applications in redox flow batteries. Hence, we designed and prepared a series of bipyridiniums based on 2,2′-, 3,3′-, and 4,4′-bipyridine and 2,2′-bipyrimidine. The straightforward synthesis utilizes commercially or readily available starting compounds and their direct N-alkylation, mostly using 1,3-propanesultone. All eleven target derivatives with systematically evolved structure were investigated by cyclic voltammetry, which allowed elucidating thorough structure-property relationships. The electrochemical behavior depends primarily on the parent scaffold, type of N-alkylation, number of quaternized nitrogen atoms, planarity, counter ion as well as the used media. Two derivatives featuring quasi-reversible redox processes were further tested on rotating disc electrode and in a flow battery half-cell. 4,4′-Bipyridinium derivative bearing two sultone residues showed better performance and stability in the flow half-cell with small capacity decays of 0.09/0.15% per reduction-oxidation cycle, based on the number of the utilized redox processes (one/two). © Copyright © 2021 Burešová, Klikar, Mazúr, Mikešová, Kvíčala, Bystron and Bureš.

Název v anglickém jazyce

Redox Property Tuning in Bipyridinium Salts

Popis výsledku anglicky

Bipyridinium salts are currently very popular due to their perspective applications in redox flow batteries. Hence, we designed and prepared a series of bipyridiniums based on 2,2′-, 3,3′-, and 4,4′-bipyridine and 2,2′-bipyrimidine. The straightforward synthesis utilizes commercially or readily available starting compounds and their direct N-alkylation, mostly using 1,3-propanesultone. All eleven target derivatives with systematically evolved structure were investigated by cyclic voltammetry, which allowed elucidating thorough structure-property relationships. The electrochemical behavior depends primarily on the parent scaffold, type of N-alkylation, number of quaternized nitrogen atoms, planarity, counter ion as well as the used media. Two derivatives featuring quasi-reversible redox processes were further tested on rotating disc electrode and in a flow battery half-cell. 4,4′-Bipyridinium derivative bearing two sultone residues showed better performance and stability in the flow half-cell with small capacity decays of 0.09/0.15% per reduction-oxidation cycle, based on the number of the utilized redox processes (one/two). © Copyright © 2021 Burešová, Klikar, Mazúr, Mikešová, Kvíčala, Bystron and Bureš.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/EF16_025%2F0007445" target="_blank" >EF16_025/0007445: Baterie na bázi organických redoxních látek pro energetiku tradičních i obnovitelných zdrojů.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>O - Projekt operacniho programu

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Frontiers in Chemistry

ISSN

2296-2646

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

631477

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85100961105