Agnieszka Witkowska - Profil naukowy - MOST Wiedzy

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Zdjęcie profilowe: dr hab. inż. Agnieszka Witkowska

dr hab. inż. Agnieszka Witkowska

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Budynek Centrum Nanotechnologii pokój 4/10
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Wybrane publikacje

  • Is the Solid Electrolyte Interphase an Extra-Charge Reservoir in Li-Ion Batteries?

    • J. S. Rezvani
    • R. Gunnella
    • A. Witkowska
    • F. Mueller
    • M. Pasqualini
    • F. Nobili
    • S. Passerini
    • A. Dicicco

    - ACS Applied Materials & Interfaces - Rok 2017

    Advanced metal oxide electrodes in Li-ion batteries usually show reversible capacities exceeding the theoretically expected ones. Despite many studies and tentative interpretations, the origin of this extra-capacity is not assessed yet. Lithium storage can be increased through different chemical processes developing in the electrodes during charging cycles. The solid electrolyte interface (SEI), formed already during the first...

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  • A XAS study of a highly diluted Pt electrocatalyst operating in PEM fuel cells

    - PHYSICAL CHEMISTRY CHEMICAL PHYSICS - Rok 2009

    We present an X-ray absorption spectroscopy (XAS) study of a low Pt content catalyst layer(Pt loading 0.1 mg c2) operating at the cathode of a proton exchange membrane fuel cell(PEMFC). This catalyst is based on the use of a mesoporous inorganic matrix as a support forthe catalyst Pt nanoparticles. Due to the high Pt dilution, in situ measurements of itsstructural properties by XAS are challenging and suitable experimental strategies...

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  • SEI Growth and Depth Profiling on ZFO Electrodes by Soft X-Ray Absorption Spectroscopy

    • A. Dicicco
    • A. Giglia
    • R. Gunnella
    • S. Koch
    • F. Mueller
    • F. Nobili
    • M. Pasqualini
    • S. Passerini
    • R. Tossici
    • A. Witkowska

    - Advanced Energy Materials - Rok 2015

    ZnFe2O4 (ZFO) Li-ion batteries (LIBs) represent a reliable, affordable, and safe energy storage technology for use in portable application. However, current LIB active materials (graphite, lithium/transition metal spinel or layered oxides, olivine structures) can store only limited energy since they rely on insertion storage based on solid-state host-guest interactions. Moreover, performances and durability of the cells are strongly...

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