We are the CCI team

Executive Board

Our employees are the core of Custom Cells Itzehoe GmbH. Customcells is committed to a leadership concept with flat hierarchies that promotes exceptional dedication and gives all our employees a great deal of personal responsibility.

Always a step ahead in cell innovation

Torge Thönnessen


Torge Thönnessen has been at the Fraunhofer Institute for Silicon Technology (ISIT) since 2010. As a scientist and director of the new technology centre in the “Integrated Energy Systems” department, he has played a major role in building and developing cell construction processes. As head of the Electrode Foil Manufacturing division of X-FAB MEMS Foundry Itzehoe GmbH, Mr Thönnessen has been developing and enhancing production and business processes for electrode foil manufacturing since 2011.

Mr Thönnessen studied chemistry in Marburg and Lund (Sweden), specialising in macromolecular chemistry. He completed his studies in 2009 with a degree in chemistry. Mr Thönnessen has also worked in the chemicals industry.

Leopold König


Leopold König joined the Integrated Energy Systems department of ISIT at the beginning of 2012. He has been working on the development and scientific study of a manual cell manufacturing environment for batch production. Mr König studied industrial engineering, specialising in mechanical engineering and business management, and has close connections within the electrical engineering industry.

Mr König has also worked in the areas of construction project management, private equity real estate in Germany, Canada and the People’s Republic of China, and also has in-depth knowledge in the field of medical technology.