Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Toward Stable Cycling of a Cost-Effective Cation-Disordered Rocksalt Cathode via Fluorination

Journal Article · · Advanced Functional Materials
 [1];  [2];  [3];  [1];  [1];  [1];  [3];  [2];  [1]
  1. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
The recently developed Li-excess cation-disordered rock salts (DRXs) exhibit an excellent chemical diversity for the development of alternative Co/Ni-free high-energy cathodes. Herein, the synthesis of a highly fluorinated DRX cathode, Li1.2Mn0.6Ti0.2O1.8F0.2, based on cost-effective and earth-abundant transition metals, via a solid-state reaction, is reported. The fluorinated DRX cathode using ammonium fluoride precursor exhibits more uniform particle size and delivers a specific discharge capacity of 233 mAh g-1 and specific energy of 754 Wh kg-1, with 206 mAh g-1 retained after 200 cycles. Further, the combined synchrotron X-ray absorption spectroscopy and resonant inelastic X-ray scattering spectroscopy analysis reveals that the remarkable cycling performance is attributed to the high fluorination and thus enhanced Mn content, enabling the utilization of more Mn redox than the oxide analog. This study demonstrates a great promise to develop next-generation cost-effective DRX cathodes with enhanced capacity retention for high-energy Li-ion batteries.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC02-76SF00515
OSTI ID:
2325980
Alternate ID(s):
OSTI ID: 1975462
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 22 Vol. 33; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Tailoring the Redox Reactions for High‐Capacity Cycling of Cation‐Disordered Rocksalt Cathodes journal January 2021
Fluorination‐Enhanced Surface Stability of Cation‐Disordered Rocksalt Cathodes for Li‐Ion Batteries journal April 2021
Fluorination of Lithium-Excess Transition Metal Oxide Cathode Materials journal October 2017
Improved Cycling Performance of Li-Excess Cation-Disordered Cathode Materials upon Fluorine Substitution journal November 2018
Anion Reactivity in Cation‐Disordered Rocksalt Cathode Materials: The Influence of Fluorine Substitution journal August 2020
Determining the Criticality of Li‐Excess for Disordered‐Rocksalt Li‐Ion Battery Cathodes journal May 2021
Design Principles for High-Capacity Mn-Based Cation-Disordered Rocksalt Cathodes journal January 2020
A disordered rock-salt Li-excess cathode material with high capacity and substantial oxygen redox activity: Li 1.25 Nb 0.25 Mn 0.5 O 2 journal November 2015
Fluorination effect for stabilizing cationic and anionic redox activities in cation-disordered cathode materials journal November 2020
Lithium-Ion Battery Supply Chain Considerations: Analysis of Potential Bottlenecks in Critical Metals journal October 2017
Toward high-energy Mn-based disordered-rocksalt Li-ion cathodes journal January 2022
Reversible Li storage for nanosize cation/anion-disordered rocksalt-type oxyfluorides: LiMoO 2 – x LiF (0 ≤ x ≤ 2) binary system journal November 2017
Anionic and cationic redox and interfaces in batteries: Advances from soft X-ray absorption spectroscopy to resonant inelastic scattering journal June 2018
Realizing continuous cation order-to-disorder tuning in a class of high-energy spinel-type Li-ion cathodes journal December 2021
Understanding electrochemical potentials of cathode materials in rechargeable batteries journal March 2016
Activation and stabilization mechanisms of anionic redox for Li storage applications: Joint experimental and theoretical study on Li2TiO3–LiMnO2 binary system journal July 2020
Correlating the phase evolution and anionic redox in Co-Free Ni-Rich layered oxide cathodes journal December 2020
Characterization of Disordered Li (1+ x ) Ti 2 x Fe (1–3 x ) O 2 as Positive Electrode Materials in Li-Ion Batteries Using Percolation Theory journal November 2015
Synthesis and Electrochemical Properties of Li 4 MoO 5 –NiO Binary System as Positive Electrode Materials for Rechargeable Lithium Batteries journal January 2016
Unravelling Solid-State Redox Chemistry in Li 1.3 Nb 0.3 Mn 0.4 O 2 Single-Crystal Cathode Material journal February 2018
Redox Behaviors in a Li-Excess Cation-Disordered Mn–Nb–O–F Rocksalt Cathode journal May 2020
Improved Electrode Performance of Lithium-Excess Molybdenum Oxyfluoride: Titanium Substitution with Concentrated Electrolyte journal February 2019
Ammonium Fluoride Mediated Synthesis of Anhydrous Metal Fluoride–Mesoporous Carbon Nanocomposites for High-Performance Lithium Ion Battery Cathodes journal December 2016
Understanding the Degradation Mechanism of Lithium Nickel Oxide Cathodes for Li-Ion Batteries journal November 2016
Whither Mn Oxidation in Mn-Rich Alkali-Excess Cathodes? journal February 2021
An Overview of Cation-Disordered Lithium-Excess Rocksalt Cathodes journal March 2021
Reversible Three-Electron Redox Reaction of Mo 3+ /Mo 6+ for Rechargeable Lithium Batteries journal March 2017
Interplay between Cation and Anion Redox in Ni-Based Disordered Rocksalt Cathodes journal August 2021
Lithium Batteries and Cathode Materials journal October 2004
Investigation of the Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li 1 - x Co 1/3 Ni 1/3 Mn 1/3 O 2 Electrode System by Combination of Soft and Hard X-ray Absorption Spectroscopy journal December 2005
Origin of stabilization and destabilization in solid-state redox reaction of oxide ions for lithium-ion batteries journal December 2016
Mitigating oxygen loss to improve the cycling performance of high capacity cation-disordered cathode materials journal October 2017
A monoclinic polymorph of sodium birnessite for ultrafast and ultrastable sodium ion storage journal November 2018
Hidden structural and chemical order controls lithium transport in cation-disordered oxides for rechargeable batteries journal February 2019
A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries journal October 2022
Cation-disordered rocksalt-type high-entropy cathodes for Li-ion batteries journal October 2020
Reversible Mn2+/Mn4+ double redox in lithium-excess cathode materials journal April 2018
LiMnO2 cathode stabilized by interfacial orbital ordering for sustainable lithium-ion batteries journal December 2020
Electrochemical behavior and surface structural change of LiMn2O4charged to 5.1 V journal January 2014
Synthesis and electrochemical properties of Li 1.3 Nb 0.3 V 0.4 O 2 as a positive electrode material for rechargeable lithium batteries journal January 2016
First-charge instabilities of layered-layered lithium-ion-battery materials journal January 2015
A new class of high capacity cation-disordered oxides for rechargeable lithium batteries: Li–Ni–Ti–Mo oxides journal January 2015
A review of Ni-based layered oxides for rechargeable Li-ion batteries journal January 2017
Cation-disordered rocksalt transition metal oxides and oxyfluorides for high energy lithium-ion cathodes journal January 2020
Deconvolution of intermixed redox processes in Ni-based cation-disordered Li-excess cathodes journal January 2021
Understanding cation-disordered rocksalt oxyfluoride cathodes journal January 2021
LT-LiMn 0.5 Ni 0.5 O 2 : a unique co-free cathode for high energy Li-ion cells journal January 2021
High-capacity electrode materials for rechargeable lithium batteries: Li 3 NbO 4 -based system with cation-disordered rocksalt structure journal June 2015
Unlocking the Potential of Cation-Disordered Oxides for Rechargeable Lithium Batteries journal January 2014
Influences of NH4F additive and calcination time on the morphological evolution of α-Al2O3 from a milled γ-Al2O3 precursor journal September 2017
Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li2+2xMn1−xTi1−xO4 journal January 2016

Similar Records

A Fluorination Method for Improving Cation-Disordered Rocksalt Cathode Performance
Journal Article · Mon Jul 27 20:00:00 EDT 2020 · Advanced Energy Materials · OSTI ID:1783131

Tailoring the Redox Reactions for High-Capacity Cycling of Cation-Disordered Rocksalt Cathodes
Journal Article · Tue Jan 26 19:00:00 EST 2021 · Advanced Functional Materials · OSTI ID:1845100