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Published on: April 10, 2018
Isolated diatomic Zn-Fe in N-doped carbon for electrocatalytic nitrogen reduction to ammonia
Le Zhang1, Guilan Fan, Wence Xu
1Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China. fycheng@nankai.edu.cn.
Abstract:
Isolated diatomic Zn-Fe anchored on nitrogen-doped carbon is explored as an efficient and robust electrocatalyst for N2 reduction in a neutral aqueous electrolyte, delivering a high NH3 yield rate (30.5 μg h-1 mgcat.-1) and considerable faradaic efficiency (26.5%) at a low overpotential of -300 mV. Density functional theory calculations reveal that the Zn-Fe atomic pairs synergistically favor N2 activation and reduce the reaction barrier for the rate-limiting step of intermediate *NNH formation.
