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Dorthe Ravnsbæk

Keywords

  • Materials Chemistry
  • Energy Materials
  • Batteries
  • Nano- and atomic-scale structure
  • Electrochemistry
  • in situ and operando methods

Head of the Ravnsbæk Group

Professor Dorthe Ravnsbæk
 

Developing functional materials for sustainable batteries

Research in the Ravnsbæk Group evolves around developing functional materials for sustainable batteries. Within this topic they investigate novel electrode materials for e.g. Li-, Na- and Mg-ion batteries with activities spanning from synthesis over materials characterization to battery fabrication and electrochemical analysis. Furthermore, they are involved in a series of effort exploring methods to stabilize the electrode and the electrodes under high-potential or high mechanical strain conditions.

The focus of the Ravnsbæk Group lies especially on understanding structure property relations of battery materials, that is, how does the electrochemical properties and the battery performance correlate with the nano- and atomic-scale structure of the functional components. To elucidate this they utilize a range of X-ray and neutron based techniques, e.g. X-ray scattering, to probe the structural changes as they occur inside the operating battery during charge and discharge.


Recent publications

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Drejer, A. Ø. & Ravnsbæk, D. B. (2019). Investigation of li-ion intercalation mechanisms in a crystalline vo2(b) phase in rechargeable li-ion batteries. Poster session presented at Annual Meeting of The Danish Electrochemical Society 2019, Korsør, Denmark.
Ravnsbaek, D. (2019). Order-disorder transitions in battery electrodes studied by operando x-ray scattering. Acta Crystallographica Section A: Foundations and Advances, A75(Supplement), E308. Article MS18-02. https://doi.org/10.1107/S2053273319092489
Henriksen, C., Mathiesen, J. K., Chiang, Y. M., Jensen, K. M. Ø. & Ravnsbæk, D. B. (2019). Reducing Transformation Strains during Na Intercalation in Olivine FePO4 Cathodes by Mn Substitution. ACS Applied Energy Materials, 2(11), 8060-8067. https://doi.org/10.1021/acsaem.9b01560