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Electrochemical Process Engineering

Prof. Dr.-Ing. Christina Roth

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Equipment and Methods

For enquiries and further information, please contact Dr. Daniel Leykam


Synthese

Wet chemical synthesisHide
eppendorf centrifuge 5804
  • Ultrasonic bath and ultrasonic horn
  • Rotary vapour evaporator
  • Schlenk and vacuum technology
  • Centrifuge
  • and much more

Electrospinning processHide
electrospinner

2 x IME Technologies Electrospinner EC-DIG

  • +25 kV bis - 4kV
  • working distance: 5 - 40 cm 
  • Coaxiale Extrusion
  • rudimentary climate control system (filter heater, air dryer)
Reactive spray dryingHide
  • simplified single-step process for Si/rGO synthesis
  • water-based solvent
  • further information
OvenHide
Carbolite Klapprohrofen

Ovens and drying cabinets of various sizes and atmospheres:

  • Chamber furnace Nabertherm N 21/H (max temp.: 1280 °C, 13 kW)
  • Split tube oven Carbolite EST 12/300 (1200 °C, 1.5 kW, oxidising or reducing atmosphere)
  • Tube oven Carbolite EHA 12/450B (1200 °C, 1.96 kW, oxidising or reducing atmosphere)
  • Drying cabinets Memmert UFE 400 (max 250 °C)
CoatingHide
Vac coat DST1

Physical vapour deposition (PVD)

  • Sputter Coater Vac Coat DST1-170 (water cooling, different cathodes)

Areas of expertise


Fuel cells and water electrolysis

RDE test procedureHide
RDE Testbench

Rotating disc electrode (RDE) 

  • multiple test benches
  • different gas supply
  • fundamental investigation of catalyst materials
Test benches for fuel cellsHide
FuelCon Evaluator-C 70617
  • LT-PEM 
  • HT-PEM
MEA fabricationHide
hot press collin lab line p200E

Plate press Collin Lab Line P200E (20-300 °C, 120 kN, 196 x 196 mm)

XAS expertiseHide
  • Regular measurement time at German synchrotron research facilities (DESY und BESSY)
  • joint projects for beamline expansion (Live-XAS, Real-XAS)

Lithium and Sodium Ion Batteries

High-resolution X-ray powder diffraction (XRD)Hide
XRD STOE STADI MP
  • X-ray diffractometer (XRD) STOE STADI MP
Battery cycling channelsHide
Biologic VMP-3e

Potentiostat/Galvanostat

  • Multichannel Potentiostat Biologic VMP-3e

  • Potentiostat/Galvanostat GAMRY Reference 600, 3000
  • Booster GAMRY Reference 30K Booster 
dQ/dU-, GITT-AnalysisHide

Glovebox Hide
Jacomex Glovebox
  • JACOMEX Glovebox 

Redox Flow Batteries

Redox flow test benchesHide
redox flow tanks
  • Redox Cell Test System

CO2 reduction reaction (CO2RR)

Electrolysis cellsHide

H-cells

Flow-cells

  • Synchrotron-optimised flow cells with gas diffusion electrodes (1-2.5 cm²)

Product analysisHide
Shimadzu Nexis GC-2030
  • gas chromatography (GC) Shimadzu Nexis GC-2030 (FID, TCD)
  • liquid GC (LGC) Shimadzu Nexis GC-2030 (Autosampler)
  • high-performance liquid chromatography (HPLC) Shimadzu (DGU-405, LC-40D xr, SPD-40, SIL-40C xr)

Analytics

Gas adsorptionHide
Microtrac Belsorp Mini X

BET-Analysis

  • Microtrac Belsorp Mini X (~0,01 m²/g (N2)
  • pore size distribution (0,7 - 500 nm)

Optical calorimeter

  • Infrasorp - Fraunhofer IWS
  • mgl. Gase: CO2, n-Butan, CH4, N2, Krypton
  • Messung der Adsorptionswärme 
MicroscopyHide
Olympus BX60M

Light microscopy

  • Reflected light stereo microscope Olympus SZX12 (großer Arbeitsabstand, 120-fold magnification)

  • Reflected light microscope Olympus BX60M (bright- und dark field, polarization filter, 5x, 10x, 20x und 50x lenses)

Sample preparationHide
Struers RotoPol-31
  • Grinding and polishing machine Struers RotoPol-31 (300 mm, 30-600 rpm, sample holder single: 5-100 N , central: 30-400 N)
  • Ion mill BAL-TEC RES 101 (1-10 keV, > 200 mA ion current)
  • High vacuum sputter coater: VacCoat DST1-170 (targets: Cu, Pt, Fe, Ag, In, ...)
SpectroscopyHide
bruker vertex70
  • Raman
  • ATR-FTIR Bruker Vertex70 with Platinum ATR 
ThermallyHide
netzsch sta 449 f5 jupiter

Thermogravimetry (TGA) with differential thermal analysis (DSC) coupled to an infrared spectroscopy and mass spectrometry.

  • Netzsch STA 449 C
  • Bruker Vertex 70
  • Netzsch QMS 403 C

Simultaneous thermal analysis Netzsch STA 449 F5 Jupiter


Central analytics

Electron microscopyHide

KeyLab Electron and Optical Microscopy

  • BPI's pooled resources for structural and morphological analysis  
  • high-resolution scanning and transmission electron microscopy
  • Cryo units for preparing liquid samples, gels and polymers
  • further information
Keylab Batterie Technology (production line)Hide
  • Glovebox production line for investigating crucial manufacturing steps in battery development

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