电催化剂
电化学
法拉第效率
材料科学
碳纤维
电子转移
电池(电)
化学工程
化学
无机化学
电极
光化学
复合材料
物理化学
物理
复合数
工程类
量子力学
功率(物理)
作者
Huici Qiao,Yu Han,Lin Ye,Xin Xu,Jun Ma,Bangchun Wen,Jie Hu,Hao Huang
标识
DOI:10.1016/j.cej.2023.142628
摘要
Electrocatalytic nitrogen reduction is an economical, efficient and eco-friendly method for ammonia synthesis. However, the faraday efficiency is very low (less than 10%) in most reported researches. In this work, zero valent iron particles are dispersed on the surface of hollow carbon spheres (Fe-HCS) as electrocatalyst. As reductant and electron donor, zero valent iron can promote the transfer of electrons to the antibonding orbitals of N2, thereby enhancing nitrogen adsorption. Meanwhile, Fe-HCS exerts extraordinary electron transfer and faraday efficiency owing to superior electrical conductivity. Especially, Fe-2HCS-8 displays fantastic NH3 yield of 64.76 μg h−1 mgcat-1 and faraday efficiency of 40.81%, which overwhelmingly exceeds most reported iron-based catalysts. And the excellent energy output of power density (155.52 μW cm−2) is achieved by Zn-N2 battery. This work offers guidance for the reasonably design of zero valent metal catalysts and technology assistance toward electrochemical nitrogen fixation and energy production.
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