Contact

Dr. Xuegeng Yang

x.yangAthzdr.de
Phone: +49 351 260 3863
Fax: +49 351 260 13863

Dr. Gerd Mutschke

g.mutschkeAthzdr.de
Phone: +49 351 260 2480

Prof. Dr. Kerstin Eckert

Head Transport processes at interfaces
k.eckertAthzdr.de
Phone: +49 351 260 3860

Electrochemical processes

Gas-evolving electrodes are a central element in technologically important processes such as chlor-alkali or alkaline water electrolysis. However, an in-depth understanding of bubble nucleation, growth, coalescence and bubble detachment is not yet achieved. The studies aim on fundamental understanding of bubble dynamics, especially single hydrogen bubble generated by water electrolysis at micro-electrode. Electrochemical investigations are supported by high speed optical imaging, velocity and temperature measurements and numerical simulation in cooperation.

In order to better understand the bubble dynamics and the detachment condition, bubble growth at micro gravity was conducted by parabolic flight measurements.

https://youtu.be/boz7oKuusJk

Running projects: 

MADAGASII
H2 Lab

OXYSEP 
Solar Hydrogen

XY1

Finished projects:

MADAGAS

Nanocones

  •  
XY2

Research Methods:

Electrochemical measurements

  • Solartron Modulab XM Potentiostat/Galvanostat, current up to 100A
  • Zahner Zennium electrochemical workstation
  • CHI 660E electrochemical workstation
  • Autolab PGSTAT101 Potentiostat/Galvanostat

Optical measurements

  • High speed cameras: IDT OS7 series, up to 4200 fps
  • Long-distance microscope

Laser based measurement systems

  • 2D and 3D PIV system
  • Mach Zehnder interferometer

  
Publications

K Skibińska, K Kornaus, X Yang, D Kutyła, M Wojnicki, P Żabiński. One-step synthesis of the hydrophobic conical Co-Fe structures-the comparison of their active areas and electrocatalytic properties. Electrochimica Acta,  415, 140127, 2022 [DOI]
K. Skibińska, D. Kutyła, X. Yang, L. Krause, MM Marzec, P Żabiński. Rhodium-decorated nanoconical nickel electrode synthesis and characterization as an electrochemical active cathodic material for hydrogen production. Applied Surface Science, 153326, 2022 [DOI] 

W. Jiang, M. Huang, Y. Lao, X. Yang, C. Wang, Z. Tian, S. Zhou, G. Mutschke, K. Eckert. Experimental and numerical investigations of Ni–Co–SiO2 alloy films deposited by magnetic-field-assisted jet plating. Surface and Coatings Technology, 423, 127583, 2021 [DOI]

G. Marinaro, M. Huang, G. Mutschke, X. Yang, K. Eckert. Oscillatory Copper Deposition on Conical Iron Electrodes in a Nonuniform Magnetic Field. Magnetochemistry, 7 (4), 46, 2021 [DOI]

A. Bashkatov, X. Yang, G. Mutschke, B. Fritzsche, SS Hossain, K. Eckert. Dynamics of single hydrogen bubbles at Pt microelectrodes in microgravity. Physical Chemistry Chemical Physics, 23 (20), 11818-11830, 2021 [DOI]

W. Jiang, M. Qiu, L. Shen, G. Lou, X. Yang, K. Eckert and Z. Tian. Effect of deposition current density on the Co–Ni/SiO2 alloy composite coatings using scanning jet electrodeposition. Surface Topography: Metrology and Properties, 9:015027, 2021. [DOI]

S. Hossain, G. Mutschke, A. Bashkatov, and K. Eckert. The thermocapillary effect on gas bubbles growing on electrodes of different sizes. Electrochimica Acta 353:136461, 2020. [DOI]

Aleksandr Bashkatov, Syed Sahil Hossain, Xuegeng Yang, Gerd Mutschke, and Kerstin Eckert. Oscillating hydrogen bubbles at pt microelectrodes. Physical Review Letters, 123:214503, 2019. [DOI]

Julian Massing, Gerd Mutschke, Dominik Baczyzmalski, Syed Sahil Hossain, Xuegeng Yang, Kerstin Eckert, and Christian Cierpka. Thermocapillary convection during hydrogen evolution at microelectrodes. Electrochimica Acta, 297:929-940, 2019. [DOI]

X. Yang, D. Baczyzmalski, C. Cierpk, G. Mutschke & K. Eckert, "Marangoni convection at electrogenerated hydrogen bubbles", Physical Chemistry Chemical Physics 20, 11542-11548 (2018)  [DOI]

Dominik Baczyzmalski, Franziska Karnbach, Gerd Mutschke, Xuegeng Yang, Kerstin Eckert, Margitta Uhlemann, Christian Cierpka, Growth and detachment of single hydrogen bubbles in a magnetohydrodynamic shear flow, Physical Review Fluids, 2, 093701 (2017). [DOI]

Gerd Mutschke, Dominik Baczyzmalski, Christian Cierpka, Franziska Karnbach, Margitta Uhlemann, Xuegeng Yang, Kerstin Eckert, Jochen Fröhlich, Numerical simulation of mass transfer and convection near a hydrogen bubble during water electrolysis in a magnetic field, Magnetohydrodynamics, 53, 193-200 (2017). [DOI]

Franziska Karnbach, Xuegeng Yang, Gerd Mutschke, Jochen Fröhlich, Jürgen Eckert, Annett Gebert, Kristina Tschulik, Kerstin Eckert, Margitta Uhlemann, Interplay of the Open Circuit Potential-Relaxation and the Dissolution Behavior of a Single H2 Bubble Generated at a Pt Microelectrode, The Journal of Physical Chemistry C, 120, 15137-15146 (2016). [DOI]

Dominik Baczyzmalski, Franziska Karnbach, Xuegeng Yang, Gerd Mutschke, Margitta Uhlemann, Kerstin Eckert, Christian Cierpka, On the Electrolyte Convection around a Hydrogen Bubble Evolving at a Microelectrode under the Influence of a Magnetic Field, Journal of The Electrochemical Society, 163, E248-E257 (2016). [DOI]

Xuegeng Yang, Franziska Karnbach, Margitta Uhlemann, Stefan Odenbach, Kerstin Eckert, Dynamics of single hydrogen bubbles at a platinum microelectrode, Langmuir, 31, 8184-8193 (2015). [DOI]


Contact

Dr. Xuegeng Yang

x.yangAthzdr.de
Phone: +49 351 260 3863
Fax: +49 351 260 13863

Dr. Gerd Mutschke

g.mutschkeAthzdr.de
Phone: +49 351 260 2480

Prof. Dr. Kerstin Eckert

Head Transport processes at interfaces
k.eckertAthzdr.de
Phone: +49 351 260 3860