Als Verstärkung für unser Team suchen wir am Standort München eine/nPhD "Effect of High Operation Temperature to the Degradation of Fuel Cells" (f/m/x)Stellenreferenz: 25364THE FUTURE IS WHAT WE CREATE WHEN WE TAKE OUR VISIONS TO THE LIMITS.PHD AT THE BMW GROUP.Bridging the gap between your doctoral studies and the kind of career challenge you’re looking for isn’t always easy. That’s why our ProMotion PhD programme gives you the opportunity to apply your passion and scientific expertise to very real challenges that could shape the future of mobility. If selected, you’ll have the chance to really develop your own future career path with us through your practice-related thesis, promote your chosen specialty from within – and position yourself to secure the career you’ve always wanted.Topic of the doctoral thesis „Effect of High Operation Temperature to the Degradation of Fuel Cells under Automotive Drive Cycles” The main topic of the doctoral thesis is to investigate the effect of high operation temperature to the degradation of fuel cells with respect to automotive drive cycles. Automotive size cells from single cell to short stacks will be characterized in this study. Drive cycles derived from customer driving behavior and standardized reference cycles like Worldwide harmonized Light vehicles Test Procedure (WLTP) will be taken as reference of operation conditions in fuel cells. The degradation causes and mechanisms during the drive cycles at high operation temperature will be investigated. These will be validated using accelerated stress test protocols (AST). With this understanding, a simplified Membrane Electrode Assembly (MEA) model will be developed and utilized to predict the speed of degradation and life time of fuel cells. The modeling result will be used as input for adjusted operation conditions to minimize the degradation in customer drive cycles. Finally, the experimental validation of the model using the adjusted operation conditions will be performed, and compared to the reference drive cycle and AST. With the adjusted operation conditions, a robust drive cycle can be obtained without sacrificing the life time and performance of the fuel cells. What awaits you?The research questions addressed:To determine main parameters causing the degradation at high operation temperature, and compare their respective influences to the degradation of fuel cells.To identify degradation mechanisms at high operation temperature.To investigate effect of the reference drive cycle and accelerated stress test (AST) at high operation temperature to the degradation of fuel cells.To derive a simplified MEA degradation model based on the main parameters causing the degradation and the degradation mechanisms to assess the speed of degradation and life time of fuel cells.To develop a mitigation strategy to eliminate/minimize the degradation based on the experimental input and the MEA degradation model.To obtain a robust drive cycle and stable fuel cell performance.Framework conditions for the research project. All fuel cell in-situ measurements can be carried out at BMW, which are properly equipped with characterization devices (HFR, Zahner, S++, Gas sensor, etc.). The cells for the experiment will be obtained from BMW internal fuel cell stack development team or BMW co-operation partners. The ex-situ and post mortem analysis can be performed at the BMW Analytical Department. The software required for the simulations model such as Matlab is available at BMW. The necessary computer hardware (Windows workstation) will also be provided. What you should bring along?Master Degree, preferably in chemistry or related studies.Experiences in electro chemistry and/or fuel cells.Basic knowledge on electrochemical simulation tools.Experienced in laboratory work.Independent and self motivated team worker. You are enthused by new technologies and an innovative environment? Apply now! Earliest starting date: 2021-04-01Duration: 36 months.Working hours: VollzeitContact:BMW Group Recruiting Team+49 89 382-17001BMW GroupRecruitingMünchenBEWERBENAuf der Suche nach einer spannenden Herausforderung?Hier gibt es viele weitere Infos über uns als Arbeitgeber: bmwgroup.jobs/karriereEinblicke hinter die Kulissen gibt es auch auffacebook.com/bmwgroupcareersundinstagram.com/bmwgroupcareers.