1. Institute
of Engineering Thermodynamics, German Aerospace Center, Pfaffenwaldring
38-40, D-70569 Stuttgart, Germany
2. Helmholtz Institute for Electrochemical Energy Storage Ulm, Helmholtzstraße 11, D-89081 Ulm, Germany
3. Toyota Motor Europe NV/SA, Hoge
Wei 33A, B-1930 Zaventem, Belgium
4. University of Ulm, Helmholtzstraße
11, D-89081 Ulm, Germany