Sequentially electrodeposited Fe 6 Ni/FeNi 6 NiFe hydroxide/LDH-like double-layer electrodes for efficient oxygen evolution reaction

Fe 6 Ni@FeNi 6 LDH was fabricated on nickel foam by two-step electrodeposition, delivering efficient and stable OER performance with a low overpotential of 249 mV at 20 mA cm −2 and a Tafel slope of 41.4 mV dec −1 .