Influence of structural properties on (de-)intercalation of ClO4- anion in graphite from concentrated aqueous electrolyte

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00547351" target="_blank" >RIV/61388955:_____/22:00547351 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/22:00547351 RIV/00216208:11310/22:10439406

Výsledek na webu

<a href="http://hdl.handle.net/11104/0323593" target="_blank" >http://hdl.handle.net/11104/0323593</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2021.10.051" target="_blank" >10.1016/j.carbon.2021.10.051</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of structural properties on (de-)intercalation of ClO4- anion in graphite from concentrated aqueous electrolyte

Popis výsledku v původním jazyce

Graphite intercalation compounds (GICs) are widely known for their remarkable multifold physico-chemical properties and their numerous state-of-the-art applications, such as energy storage, sensors, lubrication, catalysis, magneto-optics, superconductivity, etc. However, the properties of GICs largely depend on the synthesis technique, structure, and morphology of the graphite. The size and properties of the intercalant species and its concentration in the host material. Accordingly, in the field of electrochemical energy storage, the appearance of novel ionic systems and detailed investigations of GICs are highly desired. In this study, two different types of graphite, natural graphite (NG) and kish graphite (KG), were used to gain insights into the intercalation of ClO4− anion in graphite from a concentrated Al(ClO4)3 aqueous electrolyte solution through extensive electrochemical studies and various in situ and ex situ spectroscopic characterization techniques. An analysis of cyclic voltammograms indicated the presence of surface-controlled charge storage along with diffusion-controlled ion intercalation into the interlayer spaces in NG and KG. Additionally, a comparative study on the electrochemical behavior of these two types of graphite showed differences that can be correlated with their structural properties. These findings open new perspectives for GIC formation in concentrated aqueous electrolytes and applications in electrochemical energy storage.nn

Název v anglickém jazyce

Influence of structural properties on (de-)intercalation of ClO4- anion in graphite from concentrated aqueous electrolyte

Popis výsledku anglicky

Graphite intercalation compounds (GICs) are widely known for their remarkable multifold physico-chemical properties and their numerous state-of-the-art applications, such as energy storage, sensors, lubrication, catalysis, magneto-optics, superconductivity, etc. However, the properties of GICs largely depend on the synthesis technique, structure, and morphology of the graphite. The size and properties of the intercalant species and its concentration in the host material. Accordingly, in the field of electrochemical energy storage, the appearance of novel ionic systems and detailed investigations of GICs are highly desired. In this study, two different types of graphite, natural graphite (NG) and kish graphite (KG), were used to gain insights into the intercalation of ClO4− anion in graphite from a concentrated Al(ClO4)3 aqueous electrolyte solution through extensive electrochemical studies and various in situ and ex situ spectroscopic characterization techniques. An analysis of cyclic voltammograms indicated the presence of surface-controlled charge storage along with diffusion-controlled ion intercalation into the interlayer spaces in NG and KG. Additionally, a comparative study on the electrochemical behavior of these two types of graphite showed differences that can be correlated with their structural properties. These findings open new perspectives for GIC formation in concentrated aqueous electrolytes and applications in electrochemical energy storage.nn

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Carbon

ISSN

0008-6223

e-ISSN

1873-3891

Svazek periodika

186

Číslo periodika v rámci svazku

JAN 2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

612-623

Kód UT WoS článku

000712465000005

EID výsledku v databázi Scopus

2-s2.0-85117831362