Wu, Angjian, Yang, Ji, Xu, Bo, Wu, Xiao-Yu, Wang, Yuhang, Lv, Xingjie, Ma, Yichen, Xu, Aoni, Zheng, Jiageng, Tan, Qinhuai et al (show 10 more authors)
(2021)
Direct ammonia synthesis from the air via gliding arc plasma integrated with single atom electrocatalysis.
Applied Catalysis B: Environmental, 299.
p. 120667.
ISSN 0926-3373, 1873-3883
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Text
ACB NH3.pdf - Author Accepted Manuscript Download (37MB) | Preview |
Abstract
Industrial ammonia synthesis revolutionized global agriculture and industry, but it consumes significant amounts of energy and releases vast quantities of CO2. One alternative, electrocatalytic nitrogen reduction generally suffers from a low ammonia yield rate and poor selectivity. Here, a tandem “plasma-electrocatalysis” strategy was proposed to harvest ammonia from the air. An ammonia yield rate (~1.43 mgNH3 cm-2 h-1) with almost 100% faradaic efficiency was achieved during over 50 hours of stable operation at -0.33 V vs. RHE. The ammonia yield rate reached up to ~3.0 mgNH3 cm-2 h-1 with a faradaic efficiency of ~62% at -0.63 V vs. RHE. This marked performance is achieved by separating activation of stable nitrogen molecules via non-thermal plasma, followed by selective ammonia synthesis via a cobalt single-atom electrocatalyst. This strategy may rival the Haber-Bosch process and the aspirational electrochemical nitrogen reduction at a distributed small-size ammonia production based on a techno-economic analysis.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Ammonia synthesis, Plasma-electrocatalysis, Co single atom, Reaction mechanism |
| Divisions: | Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 03 Sep 2021 08:25 |
| Last Modified: | 06 Dec 2024 20:32 |
| DOI: | 10.1016/j.apcatb.2021.120667 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3135726 |
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