Supervisor: Dr. Kalthoum Riahi
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
Supervisor: Prof. Dr. Lambert Alff
The Fraunhofer IWKS facility is part of the Fraunhofer-Gesellschaft, which with over 75 institutes is one of the leading organizations for applied research in Europe. The facility is dedicated to the development of new recycling technologies and substitutes for scarce raw and valuable materials. In addition, resource strategy studies are carried out in order to assess the availability of raw materials in the overall process of extraction, utilization and after-use.
Supervisor: Prof. Dr. Anke Weidenkaff
Polymer-derived ceramics (PDCs) can be obtained upon pyrolysis of suitable inorganic polymers in inert or reactive atmosphere.[1-3] An important characteristic of PDCs is the strong relationship between the molecular structure and chemistry of the polymers, their processing and the nanostructure and properties of the resulting ceramics.[2] They are nanoscopically heterogeneous and composed of nanodomains. This feature is controlled by the nature and organization of the segregated carbon formed during the polymer-to-ceramic conversion.[2,4,5] Due to their specific features such as tunable electrical, dielectrical, optical and thermal properties, PDCs can act as multifunctional materials performing multiple functions in a system.[1-5]
Supervisors: Dr. rer. nat. Gabriela Mera, Prof. Dr. Ralf Riedel
In response to the changing global landscape, energy has become a primary focus of the major world powers and scientific community. There has been great interest in developing and refining more efficient energy storage devices. One such device, the supercapacitor, has matured significantly over the last decade and emerged with the potential to facilitate major advances in energy storage. Supercapacitors, also known as ultracapacitors or electrochemical capacitors, utilize high surface area electrode materials and thin electrolytic dielectrics to achieve capacitances several orders of magnitude larger than conventional capacitors [1]. In doing so, supercapacitors are able to attain greater energy densities while still maintaining the characteristic high power density of conventional capacitors.
Supervisors: Dr. Magdalena Joanna Graczyk-Zajac, Prof. Dr. Ralf Riedel
Supervisor: Dr. Kalthoum Riahi
Supervisors: Dr. Xingxing Xiao, Dr. Marc Widenmeyer
Supervisors: Dr. Xingxing Xiao, Prof. Dr. Anke Weidenkaff
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
Supervisor: Prof. Dr. Lambert Alff
2021/03/31
This project tries to incorporate available magnetization data into the deep learning model so that stable magnetic materials will be predicted, focusing on building a convolutional neural network model on the magnetization.
Expertise will be gained on GPU-computation, coding with Python, and possible experience on sophisticated density functional theory calculations, valuable for both future PhD studies and industrial positions.
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
2021/03/30
Supervisor: Prof. Dr. Hongbin Zhang
In this project massive density functional theory calculations should be carried out to evaluate the thermal conductivities for both 2D and 3D insulators with large band gaps. Particular focus should hereby be on those cases with tunable structural phase transitions.
If time allows there will also be explorative calculations to get the interfacial thermal resistance.
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Polymer-derived ceramics (PDCs) can be obtained upon pyrolysis of suitable inorganic polymers in inert or reactive atmosphere.[1-3] An important characteristic of PDCs is the strong relationship between the molecular structure and chemistry of the polymers, their processing and the nanostructure and properties of the resulting ceramics.[2] They are nanoscopically heterogeneous and composed of nanodomains. This feature is controlled by the nature and organization of the segregated carbon formed during the polymer-to-ceramic conversion.[2,4,5] Due to their specific features such as tunable electrical, dielectrical, optical and thermal properties, PDCs can act as multifunctional materials performing multiple functions in a system.[1-5]
Supervisors: Dr. rer. nat. Gabriela Mera, Prof. Dr. Ralf Riedel
The topic to be addressed will involve the preparation of functional ceramics from tailored polymeric single-source precursors. The research work is closely linked to a scientific cooperation with the company Merck KGaA in Darmstadt.
Supervisors: Prof. Dr. Ralf Riedel, Dr. Ying Zhan
Supervisors: Dr. Xingxing Xiao, Dr. Marc Widenmeyer
Supervisors: Dr. Xingxing Xiao, Prof. Dr. Anke Weidenkaff
Solid Oxide Electrolyzers are considered to be the most energy-efficient electrolyzer solutions. Thus, they are essential to the production of hydrogen from renewable energy sources. However, the degradation and long-term reliability are factors that keep them from a widespread application. Therefore, the evaluation of the most critical features contributing to this is important. With the help of quantification of the uncertainties of Solid Oxide Electrolyzers (SOEC), especially compared to Solid Oxide Fuel Cells (SOFC), we would like to provide an assessment of the reliability of the systems and a suggestion for improvement.
Supervisor: Prof. Dr. Anke Weidenkaff
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
2022/03/23
Supervisors: Prof. Dr. Anke Weidenkaff , Dr. Wenjie Xie
Supervisor: Prof. Dr. Lambert Alff
2021/03/31
This project tries to incorporate available magnetization data into the deep learning model so that stable magnetic materials will be predicted, focusing on building a convolutional neural network model on the magnetization.
Expertise will be gained on GPU-computation, coding with Python, and possible experience on sophisticated density functional theory calculations, valuable for both future PhD studies and industrial positions.
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
2021/03/30
Supervisor: Prof. Dr. Hongbin Zhang
The Fraunhofer IWKS facility is part of the Fraunhofer-Gesellschaft, which with over 75 institutes is one of the leading organizations for applied research in Europe. The facility is dedicated to the development of new recycling technologies and substitutes for scarce raw and valuable materials. In addition, resource strategy studies are carried out in order to assess the availability of raw materials in the overall process of extraction, utilization and after-use.
Supervisor: Prof. Dr. Anke Weidenkaff
In this project massive density functional theory calculations should be carried out to evaluate the thermal conductivities for both 2D and 3D insulators with large band gaps. Particular focus should hereby be on those cases with tunable structural phase transitions.
If time allows there will also be explorative calculations to get the interfacial thermal resistance.
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Supervisor: Prof. Dr. Hongbin Zhang
Polymer-derived ceramics (PDCs) can be obtained upon pyrolysis of suitable inorganic polymers in inert or reactive atmosphere.[1-3] An important characteristic of PDCs is the strong relationship between the molecular structure and chemistry of the polymers, their processing and the nanostructure and properties of the resulting ceramics.[2] They are nanoscopically heterogeneous and composed of nanodomains. This feature is controlled by the nature and organization of the segregated carbon formed during the polymer-to-ceramic conversion.[2,4,5] Due to their specific features such as tunable electrical, dielectrical, optical and thermal properties, PDCs can act as multifunctional materials performing multiple functions in a system.[1-5]
Supervisors: Dr. rer. nat. Gabriela Mera, Prof. Dr. Ralf Riedel