1. Department of Inorganic Chemistry I Technische Universität Dresden Bergstraße 66 01069 Dresden Germany
2. Fraunhofer IWS Winterbergstr. 27 01277 Dresden Germany
3. Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing 100081 P. R. China
4. Research Institute of Electrochemical Energy (RIECEN) Department of Energy and Environment National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 Japan