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  • Title: Spinel LiMn2O4 Nanofiber: An Efficient Electrocatalyst for N2 Reduction to NH3 under Ambient Conditions.
    Author: Li C, Yu J, Yang L, Zhao J, Kong W, Wang T, Asiri AM, Li Q, Sun X.
    Journal: Inorg Chem; 2019 Aug 05; 58(15):9597-9601. PubMed ID: 31313568.
    Abstract:
    The production of ammonia (NH3) in the industrial scale basically relies on the traditional technology of Haber-Bosch, which is operated under harsh conditions with high energy consumption and a huge number of greenhouse gas emissions. Electrochemical N2 reduction reaction (NRR) is a promising route for artificial N2-to-NH3 fixation with less energy consumption. However, an effective electrocatalyst, as a prerequisite of the NRR, is of significance. Here, we report that a spinel LiMn2O4 nanofiber acts as a noble-metal-free electrocatalyst for NH3 synthesis with excellent performance under ambient conditions. The electrocatalyst, which was tested in 0.1 M HCl, has an excellent Faradaic efficiency of 7.44% and a NH3 yield of 15.83 μg h-1 mgcat.-1 at -0.50 V versus reversible hydrogen electrode. Moreover, it also possesses excellent electrochemical and structure stability.
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