Assembly and interaction of polyaniline chains: impact on electro- and physical-chemical behavior

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F18%3A00488904" target="_blank" >RIV/61389013:_____/18:00488904 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/18:00488904

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.8b01948" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.8b01948</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.8b01948" target="_blank" >10.1021/acs.jpcc.8b01948</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Assembly and interaction of polyaniline chains: impact on electro- and physical-chemical behavior

Popis výsledku v původním jazyce

Polyaniline (PANI) is one of the promising candidates for utilization as electrode material in supercapacitors, and its electro- and physical–chemical properties have been studied for several decades. However, there are fundamental questions that need to be answered. For example, is it possible to obtain and characterize individual PANI chains or what is the impact of chains interactions on electro- and physical–chemical behavior? To that end, we isolated and characterized individual PANI chains alongside nanofibrillar assemblies for the first time, and moreover, we demonstrate that the interaction between polyaniline chains and their assembly into nanofibrils have a crucial impact on electro- and physical–chemical behaviors of PANI. Additionally, the optical transitions of three different conglomerations and protonation states are studied and correlated with the structural and electrochemical characterization. The mechanism of the redox process for individual PANI chains and PANI nanofibrils is proposed. The specific capacitance of 1050 F/g (at 25 A/g of specific current) for three-electrode configuration and 450 F/g (at 9 A/g of specific current) for two-electrode configuration was obtained, which is the highest value reported to date.

Název v anglickém jazyce

Assembly and interaction of polyaniline chains: impact on electro- and physical-chemical behavior

Popis výsledku anglicky

Polyaniline (PANI) is one of the promising candidates for utilization as electrode material in supercapacitors, and its electro- and physical–chemical properties have been studied for several decades. However, there are fundamental questions that need to be answered. For example, is it possible to obtain and characterize individual PANI chains or what is the impact of chains interactions on electro- and physical–chemical behavior? To that end, we isolated and characterized individual PANI chains alongside nanofibrillar assemblies for the first time, and moreover, we demonstrate that the interaction between polyaniline chains and their assembly into nanofibrils have a crucial impact on electro- and physical–chemical behaviors of PANI. Additionally, the optical transitions of three different conglomerations and protonation states are studied and correlated with the structural and electrochemical characterization. The mechanism of the redox process for individual PANI chains and PANI nanofibrils is proposed. The specific capacitance of 1050 F/g (at 25 A/g of specific current) for three-electrode configuration and 450 F/g (at 9 A/g of specific current) for two-electrode configuration was obtained, which is the highest value reported to date.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA15-14791S" target="_blank" >GA15-14791S: J- agregáty polovodivého polymeru: generace a ukládání elektřiny zesílené použitím vody a světla</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

122

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

8022-8030

Kód UT WoS článku

000430255900053

EID výsledku v databázi Scopus

2-s2.0-85045375675