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Achieving a Record‐High Yield Rate of 120.9 μ g NH 3 mg cat . − 1 h − 1 for N 2 Electrochemical Reduction over Ru Single‐Atom Catalysts
Author(s) -
Geng Zhigang,
Liu Yan,
Kong Xiangdong,
Li Pai,
Li Kan,
Liu Zhongyu,
Du Junjie,
Shu Miao,
Si Rui,
Zeng Jie
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201803498
Subject(s) - electrochemistry , electrocatalyst , catalysis , materials science , yield (engineering) , faraday efficiency , reversible hydrogen electrode , atom (system on chip) , nitrogen , hydrogen , electrode , inorganic chemistry , analytical chemistry (journal) , chemistry , working electrode , metallurgy , organic chemistry , computer science , embedded system
The electrochemical reduction of N 2 into NH 3 production under ambient conditions represents an attractive prospect for the fixation of N 2 . However, this process suffers from low yield rate of NH 3 over reported electrocatalysts. In this work, a record‐high activity for N 2 electrochemical reduction over Ru single atoms distributed on nitrogen‐doped carbon (Ru SAs/N‐C) is reported. At −0.2 V versus reversible hydrogen electrode, Ru SAs/N‐C achieves a Faradaic efficiency of 29.6% for NH 3 production with partial current density of −0.13 mA cm −2 . Notably, the yield rate of Ru SAs/N‐C reaches 120.9 μ gNH 3 mg cat . − 1 h − 1, which is one order of magnitude higher than the highest value ever reported. This work not only develops a superior electrocatalyst for NH 3 production, but also provides a guideline for the rational design of highly active and robust single‐atom catalysts.