1. Science Institute and Faculty of Physical SciencesUniversity of Iceland 107 Reykjavík Iceland
2. Institute of ElectrochemistryUlm University Albert‐Einstein‐Allee 47 89081 Ulm Germany
3. Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage Helmholtz‐Straße 16 89081 Ulm Germany
4. Karlsruhe Institute of Technology (KIT) P.O. Box 3640 76021 Karlsruhe Germany