Ralf Wagner graduated with a PhD in the field of electrolytes for lithium-ion batteries in the working group of Prof. Martin Winter at the MEET Battery Research Center of the University of Muenster. During that time, Ralf Wagner works as an independent technology consultant in the field of lithium-ion technology for more than a year. Ralf Wagner has been working for Custom Cells Itzehoe GmbH as a senior project planner and sales manager. He has overall 12 years of experience in the field of lithium-ion batteries and is author/co-author of 37 scientific publications and inventor of 7 patent applications.