Katharina Hogrefe

Research output

Research output per year 2019 2021 2023

• 18 Article
• 5 Poster
• 1 Chapter
• 1 Abstract
• 1 More
  • 1 Conference article

Research output per year

Research output per year

Search results

• 2023

  Energetically preferred Li⁺ ion jump processes in crystalline solids: Site-specific hopping in β-Li₃VF₆ as revealed by high-resolution ⁶Li 2D EXSY NMR

  Bottke, P., Hogrefe, K., Kohl, J., Nakhal, S., Wilkening, A., Heitjans, P., Lerch, M. & Wilkening, H. M. R., Jun 2023, In: Materials Research Bulletin. 162, 112193.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Fast Na⁺ ion dynamics in the Nb⁵⁺ bearing NaSICON Na_3+x−zNb_zZr_2−zSi_2+xP_1−xO₁₂ as probed by ²³Na NMR and conductivity spectroscopy

  Stainer, F., Gadermaier, B., Kügerl, A., Ladenstein, L., Hogrefe, K. & Wilkening, H. M. R., Jul 2023, In: Solid State Ionics. 395, 116209.

  Research output: Contribution to journal › Article › peer-review

  • Conductance 100%
  • Room Temperature 66%
  • Sample 33%
  • Grain Boundary 33%
  • Ion Transport 33%

• Low dimensional Li+ diffusion in halide electrolytes

  Stainer, F., Hogrefe, K., Gadermaier, B. & Wilkening, H. M. R., 1 Jun 2023.

  Research output: Contribution to conference › Poster › peer-review

• Understanding fast ion dynamics in sodiated Li₄Na _x Ti₅O₁₂: from interfacial to extended Li⁺ and Na⁺ dynamics in its mixed-conducting solid solutions

  Posch, P., Lunghammer, S., Wilkening, A., Hogrefe, K. & Wilkening, H. M. R., 1 Jan 2023, In: JPhys Energy. 5, 1, 015001.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2022

  Fast Na ion dynamics in Nb5+ bearing Na3+xZr2Si2+xP1−xO12

  Stainer, F., Kügerl, A. M., Ladenstein, L., Hogrefe, K., Gadermaier, B. & Wilkening, H. M. R., 6 Oct 2022. 1 p.

  Research output: Contribution to conference › Poster › peer-review

• Fluoride ion dynamics in nanocrystalline α-PbF₂: On the tremendous impact of structural disorder on F⁻ anion hopping in poor ion conductors

  Scheiber, T., Gombotz, M., Hogrefe, K. & Wilkening, H. M. R., 1 Dec 2022, In: Solid State Ionics. 387, 116077.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Ionic Conductivity of Nanocrystalline and Amorphous Li₁₀GeP₂S₁₂: The Detrimental Impact of Local Disorder on Ion Transport

  Schweiger, L., Hogrefe, K., Gadermaier, B., Rupp, J. L. M. & Wilkening, H. M. R., 8 Jun 2022, In: Journal of the American Chemical Society. 144, 22, p. 9597-9609 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Ionic Transport and Electrochemical Properties of NaSICON-Type Li_{1 + x}Hf_2-xGa_x(PO₄)₃for All-Solid-State Lithium Batteries

  Ladenstein, L., Hogrefe, K. & Wilkening, H. M. R., 25 Jul 2022, In: ACS Applied Energy Materials. 5, 7, p. 8823-8834 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Opening Diffusion Pathways through Site Disorder: The Interplay of Local Structure and Ion Dynamics in the Solid Electrolyte Li6+xP1–xGexS5I as Probed by Neutron Diffraction and NMR

  Hogrefe, K., Minafra, N., Hanghofer, I., Banik, A., Zeier, W. G. & Wilkening, H. M. R., 2 Feb 2022, In: Journal of the American Chemical Society. 144, 4, p. 1795-1812 18 p., 144.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2021

  Broadband impedance spectroscopy of Li₄Ti₅O₁₂ : from nearly constant loss effects to long-range ion dynamics

  Gadermaier, B., Hogrefe, K., Heitjans, P. & Wilkening, H. M. R., 25 Nov 2021, In: Zeitschrift für Anorganische und Allgemeine Chemie. 647, 22, p. 2167-2171 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Temperature 100%
  • Dielectric Spectroscopy 100%
  • Lithium Ion 50%
  • Nuclear Magnetic Resonance 25%
  • Activation Energy 25%

• Conductor−Insulator Interfaces in Solid Electrolytes: A Design Strategy to Enhance Li-Ion Dynamics in Nanoconfined LiBH₄/Al₂O₃

  Zettl, R., Hogrefe, K., Gadermaier, B., Hanzu, I., Ngene, P., De Jongh, P. E. & Wilkening, H. M. R., 15 Jul 2021, In: The Journal of Physical Chemistry C. 125, 27, p. 15052−15060 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Direct Assessment of Ultralow Li⁺ Jump Rates in Single Crystalline Li₃N by Evolution-Time-Resolved ⁷Li Spin-Alignment Echo NMR

  Gadermaier, B., Hogrefe, K., Heitjans, P. & Wilkening, H. M. R., 19 Mar 2021, In: European Journal of Inorganic Chemistry. 2021, 11, p. 1028-1033 6 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Facilitated Li-ion motion by Ge-substitution in argyrodite-type materials Li_6+xGexP_1–xS₅I (x = 0–0.6) detected by solid-state NMR spectroscopy and neutron powder diffraction

  Hogrefe, K., Minafra, N., Zeier, W. G. & Wilkening, H. M. R., 15 Sept 2021.

  Research output: Contribution to conference › Poster

  • Dynamics 100%
  • Solid State 100%
  • Motion 100%
  • Nuclear Magnetic Resonance Spectroscopy 100%
  • Powder Neutron Diffraction 100%

• F anion transport in nanocrystalline SmF₃and in mechanosynthesized, vacancy-rich Sm_{x - 1}Ba_xF_{3 - x}An investigation by conductivity spectroscopy and NMR

  Gombotz, M., Hogrefe, K., Wilkening, A., Gadermaier, B. & Wilkening, M., 2021, (E-pub ahead of print) In: Zeitschrift für Physikalische Chemie. 13 p., 20213092.

  Research output: Contribution to journal › Article › peer-review

• Fuzzy logic: About the origins of fast ion dynamics in crystalline solids

  Gombotz, M., Hogrefe, K., Zettl, R., Gadermaier, B. & Wilkening, H. M. R., 29 Nov 2021, In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 379, 2211, 20200434.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Insulator:conductor interfacial regions — Li ion dynamics in the nanocrystalline dispersed ionic conductor LiF:TiO₂

  Gombotz, M., Pree, K. P., Pregartner, V., Hanzu, I., Gadermaier, B., Hogrefe, K. & Wilkening, H. M. R., 15 Oct 2021, In: Solid State Ionics. 369, 115726.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Ionic transport in the Ge-substituted argyrodite-type materials Li_6+xGe_xP_1–xS₅I (x = 0–0.6) as investigated by ⁷Li and ³¹P solid-state NMR spectroscopy and neutron powder diffraction

  Hogrefe, K., Minafra, N., Zeier, W. G. & Wilkening, H. M. R., 11 May 2021.

  Research output: Contribution to conference › Poster

• Isolable Geminal Bisgermenolates: A New Synthon in Organometallic Chemistry

  Drusgala, M., Frühwirt, P., Glotz, G., Hogrefe, K., Torvisco, A., Fischer, R. C., Wilkening, H. M. R., Kelterer, A. M., Gescheidt, G. & Haas, M., 25 Oct 2021, In: Angewandte Chemie - International Edition. 60, 44, p. 23646-23650 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Li⁺ and F^- ion dynamics in the dispersed ionic conductor LiF:TiO₂

  Hogrefe, K., Gombotz, M., Pree, K. P., Hanzu, I., Gadermaier, B. & Wilkening, H. M. R., 15 Sept 2021.

  Research output: Contribution to conference › Poster

• Tracking Ions the Direct Way: Long-Range Li⁺Dynamics in the Thio-LISICON Family Li₄MCh₄(M = Sn, Ge; Ch = S, Se) as Probed by ⁷Li NMR Relaxometry and ⁷Li Spin-Alignment Echo NMR

  Hogrefe, K., Minafra, N., Zeier, W. G. & Wilkening, H. M. R., 4 Feb 2021, In: The Journal of Physical Chemistry C. 125, 4, p. 2306–2317 12 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Two-Dimensional Substitution: Toward a Better Understanding of the Structure-Transport Correlations in the Li-Superionic Thio-LISICONs

  Minafra, N., Hogrefe, K., Barbon, F., Helm, B., Li, C., Wilkening, H. M. R. & Zeier, W. G., 26 Jan 2021, In: Chemistry of Materials. 33, 2, p. 727–740 14 p.

  Research output: Contribution to journal › Article › peer-review

• With a Little Help from 31P NMR: The Complete Picture on Localized and Long-Range Li+ Diffusion in Li6PS5I

  Hogrefe, K., Hanghofer, I. & Wilkening, H. M. R., 21 Oct 2021, In: The Journal of Physical Chemistry C. 125, 41, p. 22457-22463 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2020

  Flow modelling of Ti6Al4V under large strains

  Hogrefe, K., Buzolin, R. H. & Poletti, M. C., 12 Oct 2020, MATEC Web of Conferences . Vol. 321. 6 p. 12028

  Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

  Open Access

• Structural Disorder in Li₆PS₅I Speeds ⁷Li Nuclear Spin Recovery and Slows down ³¹P Relaxation-Implications for Translational and Rotational Jumps as Seen by Nuclear Magnetic Resonance

  Brinek, M., Hiebl, C., Hogrefe, K., Hanghofer, I. & Wilkening, H. M. R., 22 Oct 2020, In: The Journal of Physical Chemistry C. 124, 42, p. 22934-22940 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2019

  A dissipation potential approach to describe flow instability in alloys during hot deformation

  Wang, P., Hogrefe, K., PIOT, D., MONTHEILLET, F. & Poletti, M. C., 13 Jan 2019.

  Research output: Contribution to conference › Abstract

  File

• A flow instability criterion for alloys during hot deformation

  Wang, P., Hogrefe, K., Piot, D., Montheillet, F. & Poletti, M. C., 1 Jan 2019, In: Procedia Manufacturing. 37, p. 319-326 8 p.

  Research output: Contribution to journal › Conference article › peer-review

  Open Access