The group's research is aimed at understanding the transport mechanisms of ions and molecules in functional materials with local nanoscopic constraints.

These include catalysts, electrochemical energy storage-, and solvated systems. The group utilizes different spectroscopic and microscopic techniques to characterize these systems. However, the unique capability of our group is the application of sophisticated 1D- and 2D NMR methods, including high field-gradient DOSY for direct assessment of molecular diffusion processes, and hyperpolarization to amplify NMR signals.

ResearchConcept_MDvoyashkin_eng_220523
Research concept, Image: M. Dvoyashkin

Selected Publications

M. Dvoyashkin, D. Leistenschneider, J. D. Evans, L. Borchardt,
Revealing the impact of hierarchical pore organization in supercapacitor electrodes by coupling ionic dynamics at micro- and macroscales
Adv. Energy Mater. (2021) 2100700
DOI: 10.1002/aenm.202100700

 

M. Wenzel, M. Zaheer, D. Issayeva, D. Poppitz, J. Matysik, R. Gläser, M. Dvoyashkin,
Flow MAS NMR for in situ monitoring of carbon dioxide capture and hydrogenation using nanoporous solids
J. Phys. Chem. C 125 (2021) 10219-10225
DOI: 10.1021/acs.jpcc.1c00037

 

F. Walenszus, W. Bon, J. D. Evans, S. Kaskel, M. Dvoyashkin,
Molecular diffusion in a flexible mesoporous metal–organic framework over the course of structural contraction
J. Phys. Chem. Lett. 11 (2020) 9696–9701
DOI: 10.1021/acs.jpclett.0c02745

 

L. Borchardt, D. Leistenschneider, J. Haase, M. Dvoyashkin
Revising the concept of pore hierarchy for ionic transport in carbon materials for supercapacitors
Adv. Energy Mater. 8 (2018) 1800892
DOI: 10.1002/aenm.201800892

 

K.F. Kalz, R. Kraehnert, M. Dvoyashkin, R. Dittmeyer, R. Gläser, U. Krewer, K. Reuter, J.-D. Grunwaldt
Future challenges in heterogeneous catalysis: Understanding catalysts under dynamic reaction conditions
ChemCatChem 9 (2017) 17-29
DOI: 10.1002/cctc.201600996

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