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Title: Temperature-dependent solid electrolyte interphase reactions drive performance in lithium-mediated nitrogen reduction to ammonia

Journal Article · · Joule
 [1];  [1];  [2];  [1];  [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [1]
  1. Stanford Univ., CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis
  2. Stanford Univ., CA (United States)
  3. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). SUNCAT Center for Interface Science and Catalysis

The solid electrolyte interphase (SEI) is a vital component to control mass transport and selectivity in the lithium-mediated reduction of N2 to NH3 (Li-N2R). Finding strategies that generate the optimal SEI, a complex network of organic and inorganic species, can potentially improve Li-N2R performance. Here, we unravel structure-property relationships of the SEI by correlating its composition with the NH3 faradaic efficiency (FENH3). By modifying the reaction temperature, we alter electrolyte decomposition reactions and observe changes in the SEI that explain FENH3 trends between electrolyte solvents. We quantify a complex reaction environment at elevated temperatures where SEI formation is counteracted by etching reactions. This tradeoff leads to temporal fluctuations of FENH3, but the maximal FENH3 can reach up to 40%, the highest value reported for batch cells at ambient pressure, thus far. In conclusion, our work underscores the potential of novel electrolytes that steer SEI selectivity and, ultimately, improve Li-N2R performance.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
2587303
Journal Information:
Joule, Journal Name: Joule Journal Issue: 3 Vol. 9; ISSN 2542-4351
Publisher:
Elsevier BVCopyright Statement
Country of Publication:
United States
Language:
English

References (32)

Recent Progress in Understanding Solid Electrolyte Interphase on Lithium Metal Anodes journal December 2020
Lithium-mediated electrochemical reduction of high pressure N2 to NH3 journal March 1994
Understanding Continuous Lithium-Mediated Electrochemical Nitrogen Reduction journal April 2019
Electrosynthesis of ammonia with high selectivity and high rates via engineering of the solid-electrolyte interphase journal September 2022
An electrolyte additive capable of scavenging HF and PF5 enables fast charging of lithium-ion batteries in LiPF6-based electrolytes journal January 2020
A Versatile Method for Ammonia Detection in a Range of Relevant Electrolytes via Direct Nuclear Magnetic Resonance Techniques journal May 2019
Closed-Loop Electrolyte Design for Lithium-Mediated Ammonia Synthesis journal December 2021
Lithium-Mediated Electrochemical Nitrogen Reduction: Tracking Electrode–Electrolyte Interfaces via Time-Resolved Neutron Reflectometry journal May 2022
A Versatile Li0.5FePO4 Reference Electrode for Nonaqueous Electrochemical Conversion Technologies journal November 2022
Water Increases the Faradaic Selectivity of Li-Mediated Nitrogen Reduction journal January 2023
Quantifying Influence of the Solid-Electrolyte Interphase in Ammonia Electrosynthesis journal September 2023
Effect of Sulfur-Derived Solid Electrolyte Interphase on Li-mediated Nitrogen Reduction journal October 2023
Lithium-Mediated Ammonia Electrosynthesis with Ether-Based Electrolytes journal November 2023
Solvate Structures and Computational/Spectroscopic Characterization of LiBF 4 Electrolytes journal July 2014
Quantification and modeling of mechanical degradation in lithium-ion batteries based on nanoscale imaging journal June 2018
Phenol as proton shuttle and buffer for lithium-mediated ammonia electrosynthesis journal March 2024
Improving cyclability of Li metal batteries at elevated temperatures and its origin revealed by cryo-electron microscopy journal July 2019
Imaging of nitrogen fixation at lithium solid electrolyte interphases via cryo-electron microscopy journal December 2022
Calcium-mediated nitrogen reduction for electrochemical ammonia synthesis journal October 2023
Electroreduction of nitrogen with almost 100% current-to-ammonia efficiency journal July 2022
Lithium-mediated nitrogen reduction to ammonia via the catalytic solid–electrolyte interphase journal March 2024
Low temperature hydrothermal synthesis of battery grade lithium iron phosphate journal January 2017
Effect of electrolyte on the nanostructure of the solid electrolyte interphase (SEI) and performance of lithium metal anodes journal January 2018
Combined, time-resolved, in situ neutron reflectometry and X-ray diffraction analysis of dynamic SEI formation during electrochemical N2 reduction journal January 2023
Operando investigations of the solid electrolyte interphase in the lithium mediated nitrogen reduction reaction journal January 2024
Enhancement of lithium-mediated ammonia synthesis by addition of oxygen journal December 2021
Chemical Composition and Morphology of the Elevated Temperature SEI on Graphite journal January 2001
Investigation of Mixtures of BF3Carbonates and LiX (X = OCH2CF3, OC(H)(CF3)2, CO2CF3) as Novel Electrolyte Systems for Lithium Ion Batteries journal April 2020
Understanding Electrolyte Infilling of Lithium Ion Batteries journal January 2020
Reduction Reactions of Electrolyte Salts for Lithium Ion Batteries: LiPF 6 , LiBF 4 , LiDFOB, LiBOB, and LiTFSI journal January 2018
Sustainable Ammonia Production Processes journal March 2021
1921–2021: A Century of Renewable Ammonia Synthesis journal April 2022