用于环境条件下电催化氨合成的镍钴双金属磷化物催化剂。
Ni-Co bimetallic phosphide catalyst toward electrocatalytic ammonia synthesis under ambient conditions.
作者信息
Zhao Dongnan, Mao Zhixian, Zhang Shengbo, Liu Min, Hu Kui, Li Daopeng, Qu Zhengguo, Zhou Li, Shi Tongfei
机构信息
School of Energy Materials and Chemical Engineering, Hefei University Hefei 230601 China.
Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
出版信息
RSC Adv. 2025 Apr 3;15(13):10390-10394. doi: 10.1039/d5ra00391a. eCollection 2025 Mar 28.
Electrocatalytic nitrate reduction reaction (NitRR) under ambient conditions is a promising sustainable and eco-friendly method for ammonia (NH) synthesis, which currently highly relies on the energy-consuming Haber-Bosch process with enormous CO emissions. In this work, we report the synthesis of a Ni-Co bimetallic phosphide catalyst (NiCoP) using the traditional hydrothermal combined high-temperature phosphorization method. Compared with monometallic phosphides such as NiP and CoP, the as-synthesized NiCoP catalyst with synergistic effects exhibits remarkable NitRR performance with the highest faradaic efficiency (FE) of 91.3 ± 4.4% at -1.2 V ( RHE) with the maximum NH yield rate of 5553.4 ± 400.8 μg h cm at -1.4 V ( RHE). Further different electrochemical mass spectrometry (DEMS) analysis is employed to identify the intermediate produced during the electrocatalytic NitRR process, confirming NiCoP as a promising electrocatalyst for NH synthesis.
环境条件下的电催化硝酸盐还原反应（NitRR）是一种很有前景的可持续且环保的氨（NH₃）合成方法，目前氨的合成高度依赖能耗巨大且会排放大量二氧化碳的哈伯-博施法。在这项工作中，我们报道了采用传统水热法结合高温磷化法合成镍-钴双金属磷化物催化剂（NiCoP）。与诸如NiP和CoP等单金属磷化物相比，所合成的具有协同效应的NiCoP催化剂展现出卓越的NitRR性能，在-1.2 V（相对于可逆氢电极，RHE）时法拉第效率（FE）最高可达91.3±4.4%，在-1.4 V（RHE）时氨的最大产率为5553.4±400.8 μg h⁻¹ cm⁻²。进一步采用差分电化学质谱（DEMS）分析来确定电催化NitRR过程中产生的中间体，证实NiCoP是一种有前景的氨合成电催化剂。
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