1. Electrical Energy Storage DepartmentCIC EnergiguneParque Tecnológico de Álava Albert Einstein 48 01510 Miñano Álava Spain
2. Institute for Power Electronics and Electrical Drives (ISEA)RWTH Aachen University Jägerstraße 17/19 52066 Aachen Germany
3. Department of ChemistryCollege of Natural and Computational SciencesMekelle University P.O. Box‐231 Mekelle Ethiopia