NiFe-LDHs as an Effective Electrocatalyst for Electrooxidation of Urea

The development of an efficient and cost-effective electrocatalyst for urea oxidation reaction (UOR) not only help in countering energy crisis through hydrogen production but also in the treatment of toxic urea waste. Although the theoretical voltage required for H2 generation from urea electrolysis is lower than water but the sluggish kinetics associated with UOR and stability of catalyst remains challengeable and various development were made to counter the same. In this work, we synthesized NiFe-LDHs catalyst via one step, low temperature co-precipitation method. In contrast to monometallic Ni(OH)2, which takes 1.55 V versus RHE to obtain the same current density, the catalyst achieved it at 1.48 V versus RHE, demonstrating superior performance of bimetallic NiFe-LDHs over monometallic Ni(OH)2.