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Updated: Jun 21, 2025
09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
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Insight into Fluoride Additives to Enhance Ammonia Production from Lithium-Mediated Electrochemical Nitrogen
Dongwoo Shin1,2, Yeongbae Jeon1, Vy Thuy Nguyen3
1Department of Chemistry, College of Natural Science, Seoul National University (SNU), Seoul, 08826, Republic of Korea.
Small (Weinheim an Der Bergstrasse, Germany)
|July 10, 2024
Summary
Fluorine-containing additives enhance green ammonia production via electrochemical lithium-mediated nitrogen reduction reactions (Li-NRR) by improving the solid electrolyte interphase (SEI). This method boosts ammonia yield and efficiency.
Area of Science:
- Electrochemistry
- Materials Science
- Green Chemistry
Background:
- Growing demand for green ammonia as a proton carrier.
- Electrochemical lithium-mediated nitrogen reduction reactions (Li-NRR) show promise for ammonia synthesis.
Purpose of the Study:
- To investigate the effect of fluorine-containing additives on Li-NRR for enhanced ammonia production.
- To understand the role of the solid electrolyte interphase (SEI) in modulating the reaction.
Main Methods:
- Electrochemical synthesis of ammonia using Li-NRR.
- Modification of electrolytes with fluorine-containing additives (e.g., BF4-).
- Analysis of SEI composition and structure.
- Density functional theory (DFT) simulations.
Main Results:
- 0.3 wt.% BF4- additive significantly improved ammonia production efficiency (over 15% increase in Faradaic efficiency).
- Achieved high ammonia yield of 161 ± 3 nmol s-1 cm-2.
- Additives promoted the formation of a conductive LiF-incorporated SEI, reducing overpotential.
Conclusions:
- Fluorine-containing additives are effective in enhancing Li-NRR performance.
- SEI modification is crucial for efficient ammonia synthesis via Li-NRR.
- This study provides insights for designing advanced electrolytes for green ammonia production.
Keywords:
additivesammonia synthesiselectrochemical nitrogen reductionslithium fluoridelithium‐mediated nitrogen reductionsolid electrolyte interphasesMore Related Videos
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