1. Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes, Institute of High-Temperature Electrochemistry, 620066 Yekaterinburg, Russia
2. Hydrogen Energy Laboratory, Ural Federal University, 620002 Yekaterinburg, Russia
3. State Key Laboratory for Mechanical Behaviour of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an Shannxi 710049, China
4. Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia