MOF-derived C@NiO@Ni electrocatalyst for N2 conversion to NH3 in alkaline electrolytes
作者：Shijian Luo, Xiaoman Li*, Wanguo Gao and Min Luo*
關鍵字：N2 electrochemical reduction
論文來源：期刊
具體來源：Sustainable Energy &Fuels，Accepted
發表時間：2019年
Today, industrial ammonia synthesis mainly depends on the Haber-Bosch process which causes a lot of energy consumption and huge CO2 emissions.Electrochemical N2 reduction reaction (NRR) is considered as a more sustainable and environmentally benign alternative to produce ammonia, but requires efficient catalyst to overcome the difficulty of N2 activation. In this work, we report that MOF-derived C@NiO@Ni microtubes behave as a high-efficiency electrocatalyst in 0.1 M KOH electrolyte. This electrocatalyst achieves a high NH3 yield of 43.15 μg h-1 mg-1cat. and a Faradaic efficiency of 10.9% at -0.7 V vs. reversible hydrogen electrode. Experimental results indicate the excellent NRR performance originates from the oxygen vacancies in NiO. Moreover, abundant NiO/Ni interfaces are conductive to proton adsorption and further enhance the NRR performance
