BME Vegyészmérnöki és Biomérnöki Kar

Energy Storage Research Group

Contact: robert.kun@mail.bme.hu
Website: link
Focal points and main thrusts of research: Electrochemistry
Energy storage
Chemistry of surface layers
Egyéb: thin-films,composite material,solid-state Li-ion electrolyte and battery,materials characterization
Introduction: The group pursues academic research in the field of electrochemical energy storage. Main focus of the research work is the development of solid-state Li-ion batteries for various future applications. The current research work comprises the synthesis of functional materials and their in-depth structural, as well as electrochemical characterizations. Furthermore, the group deals with the manufacturing and characterization of fully functional solid-state Li-ion battery cells. The synthesized bulk-type materials and thin-films, prepared by chemical and physical methods, are characterized regarding their structure-property relationships. Moreover, the occurring complex ageing mechanisms during battery cell operation are investigated and unraveled.
Sample publications: 1.    D. Brogioli, F. Langer, R. Kun, F. La Mantia; Space-charge effects at the LLZO/PEO interface; ACS Applied Materials & Interfaces (2019) (IF2018: 8.097)
2.    J. Glenneberg, G. Kasiri, I. Bardenhagen, F. La Mantia, M. Busse, R. Kun*; Investigations on morphological and electrochemical changes of all-solid-state thin film battery cells under dynamic mechanical stress conditions; Nano Energy, 57 (2019) 549–557 (IF2019: 13.120)
3.    R. Kun*, F. Langer, M. Delle Piane, S. Ohno, W. G. Zeier, M. Gockeln, L. Colombi Ciacchi, M. Busse, I. Fekete; Structural and computational assessment of the influence of wet-chemical post-processing of the Al-Substituted cubic Li7La3Zr2O12; ACS Applied Materials & Interfaces, 10 (2018) 37188–37197 (IF2018: 8.097)
4.    M. Gockeln, J. Glenneberg, M. Busse, S. Pokhrel, L. Mädler, R. Kun*; Flame aerosol deposited Li4Ti5O12 layers for flexible, thin film all-solid-state Li-ion batteries; Nano Energy, 49 (2018) 564–573 (IF2018: 13.120)
5.    M. Gockeln, S. Pokhrel, F. Meierhofer, J. Glenneberg, M. Schowalter, A. Rosenauer, U. Fritsching, M. Busse, L. Mädler, R. Kun*; Fabrication and performance of Li4Ti5O12/C Li-ion battery electrodes using combined double flame spray pyrolysis and pressure-based lamination technique; Journal of Power Sources, 374 (2018) 97-106 (IF2018: 6.945)
6.    F. Meierhofer, H. Li, M. Gockeln, R. Kun, T. Grieb, A. Rosenauer, U. Fritsching, J. Kiefer, J. Birkenstock, L. Mädler, S. Pokhrel; Screening precursor-solvent combinations for Li4Ti5O12 energy storage material using flame spray pyrolysis; ACS Applied Materials & Interfaces, 9 (2017) 37760-37777 (IF2017: 7.504)
7.    R. Kun*, P. Schlee, E. Pal, M. Busse, T. Gesing; Role of the precursor chemistry on the phase composition and electrochemical performance of thin-film LiMn2O4 Li-ion battery cathodes prepared by spray pyrolysis; Journal of Alloys and Compounds, 726 (2017) 664-674 (IF2017: 3.133)
8.    F. Langer, M. S. Palagonia, I. Bardenhagen, J. Glenneberg, F. La Mantia, R. Kun*; Impedance spectroscopy analysis of the lithium ion transport through the Li7La3Zr2O12/P(EO)20Li interface; Journal of the Electrochemical Society, 164 (2017) A2298-A2303 (IF2017: 3.259)
9.    J. Glenneberg, I. Bardenhagen, F. Langer, M. Busse, R. Kun*; Time resolved impedance spectroscopy analysis of lithium phosphorous oxynitride - LiPON layers under mechanical stress; Journal of Power Sources, 359 (2017) 157-165 (IF2017: 6.395)
10.    I. Bardenhagen, J. Glenneberg, F. Langer, M. Busse, R. Kun*; Preparation of three-dimensional LiMn2O4/carbon composite cathodes via sol-gel impregnation and their electrochemical performance in lithium-ion battery application; Journal of the Electrochemical Society, 163 (2016) A 2539-A2544 (IF2016: 3.259)
11.    J. Glenneberg, F. Andre, I. Bardenhagen, F. Langer, J. Schwenzel, R. Kun*; A concept for direct deposition of thin film batteries on flexible polymer substrate; Journal of Power Sources, 324 (2016) 722-728 (IF2016: 6.395)
12.    F. Langer, I. Bardenhagen, J. Glenneberg, R. Kun*; Microstructure and temperature dependent lithium ion transport of ceramic-polymer composite electrolyte for solid-state lithium ion batteries based on garnet-type Li7La3Zr2O12; Solid State Ionics, 291 (2016) 8-13 (IF2016: 2.354)
13.    F. Langer, J. Glenneberg, I. Bardenhagen, R. Kun*; Synthesis of single phase cubic Al-substituted Li7La3Zr2O12 by solid state lithiation of mixed hydroxides; Journal of Alloys and Compounds, 645 (2015) 64-69 (IF2015: 3.014)
Awards and achievements: 2007: Academic Prize of the Hungarian Academy of Sciences for Young Scientists
2002: Honors Prize of the Hungarian Chemical Society
Guest professors: 06/2015-01/2019: Appointment as Professor, in accordance with the Bremen Higher Education Act (BremHG) §17 Section 1 Phrase 2
Group leader: Dr. Kun Róbert