Open AccessCommunication—Partial Oxidation of MnS for Synergistic Electrocatalysis of N2-to-NH3 Fixation at Ambient Conditions
Author(s) -
Peipei Li,
Dan Cheng,
Xiaohua Zhu,
Meiling Liu,
Youyu Zhang
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac3ab8
Subject(s) - electrochemistry , faraday efficiency , electrocatalyst , redox , selectivity , chemistry , partial oxidation , yield (engineering) , inorganic chemistry , materials science , electrode , catalysis , metallurgy , organic chemistry
Compared with the traditional Haber-Bosch process, electrochemical N 2 to NH 3 reduction affords an eco-friendly and sustainable alternative to ambient NH 3 synthesis with the aid of efficient electrocatalysts. In this work, partial oxidation of MnS to obtain the MnS-Mn 3 O 4 is proved as a promising noble-free electrocatalysts of N 2 to NH 3 fixation at ambient conditions. When tested in 0.1 M Na 2 SO 4 , the electrochemical N 2 reduction reaction performance of MnS-Mn 3 O 4 is improved comparing with the MnS, which achieves large NH 3 yield of 16.74 μ g h –1 mg cat. –1 and a high Faradaic efficiency of 5.72%. It also exhibits excellent selectivity of N 2 to NH 3 and strong long-term electrochemical stability.