Auflistung nach Autor/in "db8d6748-0009-41e8-b8e7-ddbac45d9469"

Auflistung nach Autor/in "db8d6748-0009-41e8-b8e7-ddbac45d9469"

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  • Li self-diffusion in lithium niobate single crystals at low temperatures 
    Rahn, Johanna; Hüger, Erwin; Dörrer, Lars; Ruprecht, Bernhard; Heitjans, Paul; Schmidt, Harald (Cambridge : Royal Society of Chemistry, 2012)
    Li self-diffusion in Li 2O-deficient LiNbO 3 single crystals is investigated in the temperature range between 423 and 773 K (150-500 °C) by secondary ion mass spectrometry. A thin layer of ion-beam sputtered isotope enriched ...
  • Li-Si thin films for battery applications produced by ion-beam co-sputtering 
    Strauss, Florian; Hüger, Erwin; Heitjans, Paul; Trouillet, Vanessa; Bruns, Michael; Schmidt, Harald (Cambridge : Royal Society of Chemistry, 2015)
    Amorphous lithium–silicon compounds are promising materials in order to improve pure silicon as a high-capacity anode material in lithium-ion batteries. We demonstrated that it is possible to produce amorphous LixSi (x ~ ...
  • Lithium Permeation through Thin Lithium-Silicon Films for Battery Applications Investigated by Neutron Reflectometry 
    Strauß, Florian; Hüger, Erwin; Heitjans, Paul; Geue, Thomas; Stahn, Jochen; Schmidt, Harald (Weinheim : Wiley-VCH Verlag, 2016)
    In the ongoing search for new negative electrode materials for lithium-ion batteries, amorphous silicon with a theoretical specific capacity of almost 4000 mA h g−1 is still one of the most promising candidates. In order ...
  • Neutron reflectometry to measure in situ the rate determining step of lithium ion transport through thin silicon layers and interfaces 
    Hüger, Erwin; Stahn, Jochen; Heitjans, Paul; Schmidt, Harald (Basel : MDPI AG, 2019)
    Li ion transport through thin (14-22 nm) amorphous silicon layers adjacent to lithium metal oxide layers (lithium niobate) was studied by in situ neutron reflectometry experiments and the control mechanism was determined. ...
  • Self-diffusion of lithium in amorphous lithium niobate layers 
    Rahn, Johanna; Hüger, Erwin; Dörrer, Lars; Ruprecht, Benjamin; Heitjans, Paul; Schmidt, Harald (Berlin : Walter de Gruyter, 2012)
    We investigated lithium self-diffusion in amorphous lithium niobate layers between 298 and 423 K. For the experiments, amorphous 6LiNbO 3/ 7LiNbO 3 isotope hetero-structures were deposited by ion beam sputtering and analysed ...
  • Slow Lithium Transport in Metal Oxides on the Nanoscale 
    Uhlendorf, Johanna; Ruprecht, Benjamin; Witt, Elena; Chandran, C. Vinod; Dörrer, Lars; Hüger, Erwin; Strauß, Florian; Heitjans, Paul; Schmidt, Harald (Berlin : Walter de Gruyter, 2017)
    This article reports on Li self-diffusion in lithium containing metal oxide compounds. Case studies on LiNbO3, Li3NbO4, LiTaO3, LiAlO2, and LiGaO2 are presented. The focus is on slow diffusion processes on the nanometer ...