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

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F22%3APU144206" target="_blank" >RIV/00216305:26220/22:PU144206 - isvavai.cz</a>

  • Alternative codes found

    RIV/70883521:28610/22:63548639 RIV/00216224:14740/22:00127888

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S0254058421013675" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0254058421013675</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.matchemphys.2021.125584" target="_blank" >10.1016/j.matchemphys.2021.125584</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2022

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    MATERIALS CHEMISTRY AND PHYSICS

  • ISSN

    0254-0584

  • e-ISSN

    1879-3312

  • Volume of the periodical

    278

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    17

  • Pages from-to

    1-17

  • UT code for WoS article

    000764174500004

  • EID of the result in the Scopus database

    2-s2.0-85121370255