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Lim, Hankwon
Sustainable Process Analysis, Design, and Engineering (SPADE)
Research Interests
  • Process analysis, Process design, Techno-economic analysis, Separation process, Reaction engineering, Computational fluid dynamics, Membrane reactor, H2 energy, Water electrolysis, Vanadium redox flow battery, Greenhouse gas reduction

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Unveiling Electrode-Electrolyte Design-Based NO Reduction for NH3 Synthesis

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Title
Unveiling Electrode-Electrolyte Design-Based NO Reduction for NH3 Synthesis
Author
Kim, Dong YeonShin, DongyupHeo, JuheonLim, HyungseobLim, Jung-AeJeong, Hyung MoKim, Beom-SikHeo, IljeongOh, InhwanLee, BoreumSharma, MonikaLim, HankwonKim, HyungjunKwon, Youngkook
Issue Date
2020-11
Publisher
AMER CHEMICAL SOC
Citation
ACS Energy Letters, v.5, no.11, pp.3647 - 3656
Abstract
The electrochemical N-2 reduction reaction has attracted interest as a potential alternative to the Haber-Bosch process, but a significantly low conversion efficiency and a significantly low ammonia production rate stimulate the need for alternatives. Here, we represent the electrochemical reduction of nitric oxide (NO) on a nanostructured Ag electrode in combination with a rationally designed electrolyte containing the EDTA-Fe2+ metal complex (EFeMC), which results in an similar to 100% efficiency for NH3 with a current density of 50 mA/cm(2) at -0.165 V-RHE , without any degradation in catalytic activity or product selectivity up to 120 h. Economic analysis using itemized cost estimation predicted that the synthesis of ammonia from NO reduction in an EFeMC-designed electrolyte can be market competitive at an electricity price of $0.03 kWh(-1) with a current density of >125 mA/cm(2) . Therefore, this approach opens an entirely new avenue of renewable electricity-driven ammonia synthesis.
URI
https://scholarworks.unist.ac.kr/handle/201301/48832
URL
https://pubs.acs.org/doi/10.1021/acsenergylett.0c02082
DOI
10.1021/acsenergylett.0c02082
ISSN
2380-8195
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