Processes and Components

About

Green hydrogen becomes competitive when produced and used efficiently on a large scale. Therefore, electrolyzers and other electrochemical devices need to be low cost, durable, and work efficiently with dynamic renewable energy sources. To achieve this, we need to understand and improve the function of all components in the cells. Especially the interaction between the components and with the operating conditions is important. New approaches and operating conditions offer new possibilities to make electrolysis more efficient, simple, and durable. This is why we work on understanding and optimizing these aspects in detail, with special focus on alkaline, PEM- and AEM-electrolysis.

Research Topics

  • New electrochemical processes at cell level.
  • Development of new components, also in collaboration with partners from reseach and industry.
  • Characterization of new components like electrodes, Separators, and transport layers in single cells.
  • Development of new characterization tools and special cell designs.
  • Stability, degradation, dynamic operation and accelerated degradation of electrochemical cells and components.
  • New modes of operation such as alternative water or electrolyte supply or increased temperature.
  • Understanding scaling effects from single cells to short stacks.
  • Coupling renewable energy sources with electrolysis.
  • Data analysis and use beyond present research questions

Contact

Dr. Felix Lohmann-Richters

IEK-14

Building 03.2 / Room Y111

+49 2461/61-9759

E-Mail
Publications

A. Glüsen, M. Müller, D. Stolten
Slot-die coating: A new preparation method for direct methanol fuel cells catalyst layers
Journal of Fuel Cell Science and Technology 2013, 10, 044503-044506
DOI 10.1115/1.4024607

A. Glüsen, M. Müller, D. Stolten
The effect of Nafion content on DMFC electrode characteristics
ECS Trans. 2013, 58, 1023-1029
DOI: 10.1149/05801.1023ecst

C. O. Colpan, D. Ouellette, A. Glüsen, M. Müller, D. Stolten
Reduction of methanol crossover in a flowing electrolyte-direct methanol fuel cell
Int. J. Hydrogen Energy 2017, 42, 21530-21545
DOI: 10.1016/j.ijhydene.2017.01.004

A. Glüsen et al.
Dealloyed PtNi-Core-Shell Nanocatalysts Enable Significant Lowering of Pt Electrode Content in Direct Methanol Fuel Cells
ACS Catal. 2019, 9, 3764-3772
DOI: 10.1021/acscatal.8b04883

İ. Bayrak Pehlivan et al.
The climatic response of thermally integrated photovoltaic-electrolysis water splitting using Si and CIGS combined with acidic and alkaline electrolysis
Sustain. Energy Fuels 2020, 4, 6011-6022
DOI: 10.1039/d0se01207f

A. Glüsen, M. Müller, D. Stolten
45% Cell Efficiency in DMFCs via Process Engineering
Fuel Cells 2020, 20, 507-514
DOI: 10.1002/fuce.201900234

F. P. Lohmann-Richters, M. Müller, M. Carmo
Communication - Layered Double Hydroxide as Intermediate-Temperature Electrolyte for Efficient Water Splitting
J. Electrochem. Soc. 2020, 167, 084512
DOI: 10.1149/1945-7111/ab8e80

S. Polani et al.
Size dependent oxygen reduction and methanol oxidation reactions: Catalytic activities of PtCu octahedral nanocrystals
Catal. Sci. Technol. 2020, 10, 5501-5512
DOI: 10.1039/d0cy00772b

F. P. Lohmann-Richters, S. Renz, W. Lehnert, M. Müller, M. Carmo
Review—Challenges and opportunities for increased current density in alkaline electrolysis by increasing the operating temperature
J. Electrochem. Soc. 2021, 168, 114501
DOI: 10.1149/1945-7111/ac34cc

Y. Na, P. Khadke, A. Glüsen, N. Kimiaie, M. Müller, U. Krewer
A robust methanol concentration sensing technique in direct methanol fuel cells and stacks using cell dynamics
Int. J. Hydrogen Energy 2021, 47, 6237 - 6246
DOI: 10.1016/j.ijhydene.2021.11.249

C. Karacan et al.
Challenges and important considerations when benchmarking single-cell alkaline electrolyzers
Int. J. Hydrogen Energy 2022, 47, 4294-4303
DOI: 10.1016/j.ijhydene.2021.11.068

O. Boström, S.-Y. Choi, L. Xia, S. Meital, F. Lohmann-Richters, P. Jannasch
Alkali-stable polybenzimidazole anion exchange membranes tethered with N,N-dimethylpiperidinium cations for dilute aqueous KOH fed water electrolyzers
J. Mater. Chem. A 2023, 11, 21170-21182
DOI: 10.1039/d3ta03216g

A. Hodges et al.
Critical Analysis of Published Physical Property Data for Aqueous Potassium Hydroxide. Collation into Detailed Models for Alkaline Electrolysis
J. Chem. Eng. Data 2023, 68, 1485-1506
DOI: 10.1021/acs.jced.3c00040

A. Karaca et al.
Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells
Membranes 2023, 13, 522
DOI: 10.3390/membranes13050522

A. Karaca et al.
Oxygen Reduction at PtNi Alloys in Direct Methanol Fuel Cells—Electrode Development and Characterization
Energies 2023, 16, 1115
DOI: 10.3390/en16031115

Members

News
No results found.
Loading

Last Modified: 17.02.2025