Electrochemical water splitting is an efficient way for large-scale production of clean hydrogen fuel. However, high overpotential is required to catalyzing oxygen evolution reaction (OER). Here we fabricate self-supported CoMn-LDH nanosheets with a thickness of approximately 1.9 nm on carbon fiber cloth through electrodeposition method within 50 s. The self-supported, binder-free anodes exhibit excellent OER performance with an overpotential of 258 mV at 10mAcm(-2) in 0.1 M KOH solution, remarkably lower than those of Co and Mn single counterparts, and the-state-of-the-art IrO2 catalyst. Furthermore, self-supported, binder-free anodes exhibit robust stability for OER with a negligible current loss even at a high current density (>370mAcm(-2)) over 15 h. Flexible and bendable measurements indicate no obvious degradation in the OER performance of the anode even as being bended to 180 degrees. Moreover, the water electrolysis with the CoMn-LDH/CFC as anode and Pt/C/CFC as cathode only needs a cell voltage of 1.54 V to deliver the current density of lOmA cm(-2) in 0.1 M KOH solution. Our experimental results demonstrate that the electron interaction between Mn and Co, increased electrochemical active area and decreased charge-transfer resistance contribute to the enhancement of the optimized anode in OER performance. (C) 2018 Elsevier Ltd. All rights reserved.