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In Situ Ion‐Exchange Metathesis Induced Conformal LiF Surface Films on Cathode (NMC811) as a Cathode Electrolyte Interphase

Journal Article · · Advanced Functional Materials

High-capacity cathodes (LiNi0.8Mn0.1Co0.1O2, NMC811) are promising for vehicle electrification because of their high gravimetric energy density. However, their electrochemical performance still relies upon the stability of the cathode electrolyte interphase (CEI). A highly reactive cathode interface leads to parasitic side reactions with electrolytes, resulting in accelerated capacity fading. Well-developed LiF and LiF-like inorganic compounds are believed to be good CEI components for stabilizing such reactive electrode interfaces. However, it is challenging to form an optimal surface sub-nanolayer of LiF on the cathode surfaces because of the complexity of the electrochemical reaction during battery cycling. Herein, the formation of a conformal LiF layer on the NMC811 electrode surface via an in situ ion-exchange metathesis process is reported, demonstrating a promising electrochemical performance because of a LiF-stabilized CEI. In situ generated LiF-coated NMC811 electrodes exhibit ≈97% capacity retention up to 100 cycles at a 0.3 C rate with average coulombic efficiency of ≈99.9% and ≈80% capacity retention up to 200 cycles at a 1 C rate with average coulombic efficiency of >99.6%. This finding may pave the way for reengineering the CEI to enhance the electrochemical performances and cycling stability of the high-capacity cathodes.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1997741
Alternate ID(s):
OSTI ID: 1988693
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 44 Vol. 33; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

High-Voltage Lithium-Metal Batteries Enabled by Localized High-Concentration Electrolytes journal March 2018
Enhancing Cycling Stability and Capacity Retention of NMC811 Cathodes by Reengineering Interfaces via Electrochemical Fluorination journal February 2022
Conformal LiF Stabilized Interfaces via Electrochemical Fluorination on High Voltage Spinel Cathodes (≈4.9 V) for Lithium‐Ion Batteries journal October 2022
From Surface ZrO 2 Coating to Bulk Zr Doping by High Temperature Annealing of Nickel-Rich Lithiated Oxides and Their Enhanced Electrochemical Performance in Lithium Ion Batteries journal September 2017
Prospect and Reality of Ni-Rich Cathode for Commercialization journal November 2017
Amide‐Functional, Li3N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO2 Batteries journal March 2023
Nickel-Rich Layered Lithium Transition-Metal Oxide for High-Energy Lithium-Ion Batteries journal March 2015
Armor‐like Inorganic‐rich Cathode Electrolyte Interphase Enabled by the Pentafluorophenylboronic Acid Additive for High‐voltage Li||NCM622 Batteries journal April 2023
Synthesizing High‐Capacity Oxyfluoride Conversion Anodes by Direct Fluorination of Molybdenum Dioxide (MoO 2 ) journal July 2020
Microstructural Degradation of Ni-Rich Li[Ni x Co y Mn 1 −x−y ]O 2 Cathodes During Accelerated Calendar Aging journal September 2018
An Electron Diffraction and Crystal Chemical Investigation of Oxygen/Fluorine Ordering in Niobium Oxyfluoride, NbO2F journal June 2002
Highly Fluorinated Interphases Enable High-Voltage Li-Metal Batteries journal January 2018
Improving the cycling performance of LiNi0.8Co0.1Mn0.1O2 by surface coating with Li2TiO3 journal September 2016
A perspective on nickel-rich layered oxide cathodes for lithium-ion batteries journal January 2017
Comparison of the structural and electrochemical properties of layered Li[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries journal July 2013
Singlet oxygen evolution from layered transition metal oxide cathode materials and its implications for lithium-ion batteries journal October 2018
Significantly improving cycling performance of cathodes in lithium ion batteries: The effect of Al2O3 and LiAlO2 coatings on LiNi0.6Co0.2Mn0.2O2 journal February 2018
Effect of Anode Slippage on Cathode Cutoff Potential and Degradation Mechanisms in Ni-Rich Li-Ion Batteries journal November 2020
Capacity Fading of Ni-Rich Li[Ni x Co y Mn 1– xy ]O 2 (0.6 ≤ x ≤ 0.95) Cathodes for High-Energy-Density Lithium-Ion Batteries: Bulk or Surface Degradation? journal January 2018
Evolution of Structure and Lithium Dynamics in LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) Cathodes during Electrochemical Cycling journal March 2019
Phases and Interfaces from Real Space Atomically Resolved Data: Physics-Based Deep Data Image Analysis journal August 2016
Formation of LiF Surface Layer During Direct Fluorination of High-Capacity Co-Free Disordered Rocksalt Cathodes journal August 2021
Long-Life Nickel-Rich Layered Oxide Cathodes with a Uniform Li 2 ZrO 3 Surface Coating for Lithium-Ion Batteries journal March 2017
Structural and Electrochemical Aspects of LiNi 0.8 Co 0.1 Mn 0.1 O 2 Cathode Materials Doped by Various Cations journal January 2019
Degradation Mechanism of Ni-Enriched NCA Cathode for Lithium Batteries: Are Microcracks Really Critical? journal May 2019
Lithium Batteries and Cathode Materials journal October 2004
Dendrite-Free Lithium Deposition via Self-Healing Electrostatic Shield Mechanism journal March 2013
Dendrite-Free Lithium Deposition with Self-Aligned Nanorod Structure journal November 2014
Issues and challenges facing rechargeable lithium batteries journal November 2001
Building better batteries journal February 2008
Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium-ion batteries journal March 2014
High-energy cathode material for long-life and safe lithium batteries journal March 2009
Reviving the lithium metal anode for high-energy batteries journal March 2017
High energy-density and reversibility of iron fluoride cathode enabled via an intercalation-extrusion reaction journal June 2018
Identifying the components of the solid–electrolyte interphase in Li-ion batteries journal August 2019
Performance and cost of materials for lithium-based rechargeable automotive batteries journal April 2018
Intercalation-conversion hybrid cathodes enabling Li–S full-cell architectures with jointly superior gravimetric and volumetric energy densities journal March 2019
All-temperature batteries enabled by fluorinated electrolytes with non-polar solvents journal October 2019
High-nickel layered oxide cathodes for lithium-based automotive batteries journal January 2020
Ultra-high-voltage Ni-rich layered cathodes in practical Li metal batteries enabled by a sulfonamide-based electrolyte journal March 2021
Non-flammable electrolyte enables Li-metal batteries with aggressive cathode chemistries journal July 2018
Self-smoothing anode for achieving high-energy lithium metal batteries under realistic conditions journal April 2019
Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox journal January 2018
FSI-inspired solvent and “full fluorosulfonyl” electrolyte for 4 V class lithium-metal batteries journal January 2020
Revealing electrolyte oxidation via carbonate dehydrogenation on Ni-based oxides in Li-ion batteries by in situ Fourier transform infrared spectroscopy journal January 2020
Iron Oxyfluorides as High Capacity Cathode Materials for Lithium Batteries journal January 2009
Oxygen Release and Its Effect on the Cycling Stability of LiNi x Mn y Co z O 2 (NMC) Cathode Materials for Li-Ion Batteries journal January 2017
Deep data analysis via physically constrained linear unmixing: universal framework, domain examples, and a community-wide platform journal April 2018

Figures / Tables (7)