Effects of macropore size on structural and electrochemical properties of hierarchical porous carbons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F12%3A43867996" target="_blank" >RIV/70883521:28110/12:43867996 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/12:43867996

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10853-012-6576-y" target="_blank" >http://dx.doi.org/10.1007/s10853-012-6576-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-012-6576-y" target="_blank" >10.1007/s10853-012-6576-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of macropore size on structural and electrochemical properties of hierarchical porous carbons

Popis výsledku v původním jazyce

Hierarchical porous carbons (HPCs) were synthesized by a colloid crystal template method with phenolic resin as carbon source and triblock copolymer Pluronic F127 as a soft template. The obtained HPCs with tunable macropore size of 242-420 nm exhibit large BET surface areas (similar to 900 m(2) g(-1)) and large pore volumes (similar to 1.2 cm(3) g(-1)). With an increase in the diameters of silica template, the BET surface areas and pore volumes of HPCs decrease. The electrochemical properties of the HPCs with various macropore sizes used as supercapacitor electrodes materials were evaluated using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. The results show the HPC with the macropore size of242 nm possesses the largest specific capacitance among the HPCs. The excellent capacitive behavior of HPC-242 can be attributed to its faster ion transport behavior and better ion-accessible surface area.

Název v anglickém jazyce

Effects of macropore size on structural and electrochemical properties of hierarchical porous carbons

Popis výsledku anglicky

Hierarchical porous carbons (HPCs) were synthesized by a colloid crystal template method with phenolic resin as carbon source and triblock copolymer Pluronic F127 as a soft template. The obtained HPCs with tunable macropore size of 242-420 nm exhibit large BET surface areas (similar to 900 m(2) g(-1)) and large pore volumes (similar to 1.2 cm(3) g(-1)). With an increase in the diameters of silica template, the BET surface areas and pore volumes of HPCs decrease. The electrochemical properties of the HPCs with various macropore sizes used as supercapacitor electrodes materials were evaluated using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. The results show the HPC with the macropore size of242 nm possesses the largest specific capacitance among the HPCs. The excellent capacitive behavior of HPC-242 can be attributed to its faster ion transport behavior and better ion-accessible surface area.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

6444-6450

Kód UT WoS článku

000305233200027

EID výsledku v databázi Scopus

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