Ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes for high-energy asymmetric supercapacitors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F15%3A43873175" target="_blank" >RIV/70883521:28610/15:43873175 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c5ta06958k" target="_blank" >http://dx.doi.org/10.1039/c5ta06958k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c5ta06958k" target="_blank" >10.1039/c5ta06958k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes for high-energy asymmetric supercapacitors

Popis výsledku v původním jazyce

We demonstrate the synthesis of ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes, forming an impressive hierarchical MnO2/C nanobox hybrid with an average size of 500 nm, which exhibits an excellent electrochemical performance due to the unique structure, N-doping and strong synergistic effects between them. In addition, we also assembled a green asymmetric supercapacitor (ASC) using the as-synthesized MnO2/C nanoboxes as a positive electrode and the corresponding N-doped carbon nanoboxes asa negative electrode in a neutral aqueous electrolyte, aiming to further enhance its energy density by extending the operating potential. More significantly, our ASC device is able to reversibly cycle within a wide operating voltage of 2.0 V and deliversa maximum energy density of 39.5 W h kg-1 with superior cycling stability (TILDE OPERATOR+D9190.2% capacitance retention after 5000 cycles). These intriguing results show that hollow nanostructures will be promising electrode materials f

Název v anglickém jazyce

Ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes for high-energy asymmetric supercapacitors

Popis výsledku anglicky

We demonstrate the synthesis of ultrathin MnO2 nanoflakes grown on N-doped carbon nanoboxes, forming an impressive hierarchical MnO2/C nanobox hybrid with an average size of 500 nm, which exhibits an excellent electrochemical performance due to the unique structure, N-doping and strong synergistic effects between them. In addition, we also assembled a green asymmetric supercapacitor (ASC) using the as-synthesized MnO2/C nanoboxes as a positive electrode and the corresponding N-doped carbon nanoboxes asa negative electrode in a neutral aqueous electrolyte, aiming to further enhance its energy density by extending the operating potential. More significantly, our ASC device is able to reversibly cycle within a wide operating voltage of 2.0 V and deliversa maximum energy density of 39.5 W h kg-1 with superior cycling stability (TILDE OPERATOR+D9190.2% capacitance retention after 5000 cycles). These intriguing results show that hollow nanostructures will be promising electrode materials f

Druh

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

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1504" target="_blank" >LO1504: Centrum polymerních systémů plus</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

—

Svazek periodika

3

Číslo periodika v rámci svazku

42

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

21337-21342

Kód UT WoS článku

000363163200060

EID výsledku v databázi Scopus

—