Zhwan Naghshbandi - Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), P. O. Box ۴۵۱۹۵-۱۱۵۹, Gavazang, Zanjan۴۵۱۳۷-۶۶۷۳۱, Iran.
Abdollah Salimi - Department of Chemistry, University of Kurdistan, Sanandaj, ۶۶۱۷۷-۱۵۱۷۵, Iran.
Mohammad Gholinejad - Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), P. O. Box ۴۵۱۹۵-۱۱۵۹, Gavazang, Zanjan۴۵۱۳۷-۶۶۷۳۱, Iran.

Developing a procedure for the synthesis of metal electrocatalyst with high performance andstability are considerable important to attain overall water splitting. In this work, tri-metallic containing Co, Mnand Fe arrays grown on the surface of graphene oxide prepared using a facile method and applied as catalystfor oxygen evolution reaction (OER). This material exhibited excellent activities for OER with overpotential of۲۵۰ mV at the current density of ۱۰ mA cm-۲.

Electrocatalyst, Oxygen evolution reaction (OER), Overpotential.