Detail publikace

Vanadium metal-organic frameworks derived VOx/Carbon nano-sheets and paperclip-like VOx/nitrogen-doped carbon nanocomposites for sodium-ion battery electrodes

ŠKODA, D. KAZDA, T. HANULÍKOVÁ, B. ČECH, O. VYKOUKAL, V. MICHALIČKA, J. ČUDEK, P. KUŘITKA, I.

Originální název

Vanadium metal-organic frameworks derived VOx/Carbon nano-sheets and paperclip-like VOx/nitrogen-doped carbon nanocomposites for sodium-ion battery electrodes

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In this work, vanadium metal-organic framework derived VOx/carbon and VOx/N-doped carbon nanocomposites are presented. The methodology introduced here is based on a novel polyol synthesis of vanadium metal-organic frameworks (MOFs) involving a microwave-assisted solvothermal reaction of vanadyl acetylacetonate with biphenyl-4,4'-dicarboxylic acid (Bpdc) and/or 2,2'-bipyridine-4,4'-dicarboxylic acid (NBpdc) in diethylene glycol (DEG) at the temperature of 230 degrees C. The V-based MOFs, labeled as V-Bpdc and V-NBpdc, were used as precursors for the preparation of VOx/carbon and VOx/N-doped carbon nanocomposites with unique sponge-like nano-sheet and paperclip-like morphology, respectively. The nanocomposites were obtained via thermal transformation of as-prepared vanadium MOFs in the argon atmosphere at 600 degrees C. The VOx/carbon sample consists of nano-sheets with the thickness 5-20 nm while the VOx/N-doped carbon paperclip-like nanocomposite has a rod diameter 35-70 nm. It was found that the approach reported here provides an effective and simple preparation pathway of carbon-based nanocomposites containing homogeneously distributed VOx species. Both V-MOFs and V-MOF-derived nanocomposites were characterized by the variety of physicochemical methods. In the following step, the obtained nanocomposites were investigated as electrode materials in sodium-ion batteries. Based on the obtained results, high electrochemical activities of VOx/carbon and VOx/N-doped carbon nanocomposites were evidenced. Particularly, in the case of VOx/N-doped carbon-based electrode, high capacity and low irreversible capacity were achieved. Therefore, reported materials are found to be promising candidates for electrode materials in sodium-ion batteries.

Klíčová slova

Vanadium; Metal-organic framework; Carbon; Nanocomposites; Sodium-ion batteries

Autoři

ŠKODA, D.; KAZDA, T.; HANULÍKOVÁ, B.; ČECH, O.; VYKOUKAL, V.; MICHALIČKA, J.; ČUDEK, P.; KUŘITKA, I.

Vydáno

15. 2. 2022

Nakladatel

ELSEVIER SCIENCE SA

Místo

LAUSANNE

ISSN

0254-0584

Periodikum

MATERIALS CHEMISTRY AND PHYSICS

Ročník

278

Číslo

1

Stát

Švýcarská konfederace

Strany od

1

Strany do

17

Strany počet

17

URL

https://www.sciencedirect.com/science/article/pii/S0254058421013675

BibTex

@article{BUT177468,
  author="David {Škoda} and Tomáš {Kazda} and Barbora {Hanulíková} and Ondřej {Čech} and Vít {Vykoukal} and Jan {Michalička} and Pavel {Čudek} and Ivo {Kuřitka}",
  title="Vanadium metal-organic frameworks derived VOx/Carbon nano-sheets and paperclip-like VOx/nitrogen-doped carbon nanocomposites for sodium-ion battery electrodes",
  journal="MATERIALS CHEMISTRY AND PHYSICS",
  year="2022",
  volume="278",
  number="1",
  pages="1--17",
  doi="10.1016/j.matchemphys.2021.125584",
  issn="0254-0584",
  url="https://www.sciencedirect.com/science/article/pii/S0254058421013675"
}