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

Positive Role of Fluorine Impurity in Recovered LiNi0.6Co0.2Mn0.2O2 Cathode Materials

Journal Article · · ACS Applied Materials and Interfaces
Lithium-ion battery (LIB) recycling is considered as an important component to enable industry sustainability. A massive number of LIBs in portable electronics, electric vehicles, and grid storage will eventually end up as wastes, leading to serious economic and environmental problems. Hence, tremendous efforts have been made to improve the hydrometallurgical recycling process because it is the most promising option for handling end-of-life LIBs owing to its wide applicability, low cost, and high productivity. Despite these advantages, some extra elements (Al, Fe, C, F, and so forth) remain as impurities in the removal process and are retained in the solution, which is a great challenge to obtain high-quality cathode materials. In this work, the impacts caused by fluorine impurity on the LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode are intensively investigated via hydrometallurgical coprecipitation for the first time. Our results show that up to 1 at. % fluorine impurity brings a positive influence on the recovered material due to a higher Ni2+ ratio on the surface of cathode particles. In addition, the presence of fluoride ions during coprecipitation could lead to the formation of holes in cathode particles, which improves the rate capability and cyclability dramatically. Compared to the virgin material, the capacity of the NCM622 material with 0.2 at. % fluorine impurity is boosted by ~8% (167.7 mA h/g) with a remarkable capacity retention of 98.0% after 100 cycles at 0.33 C. Besides, the cathode with 0.2 at. % fluorine impurity shows a far better rate performance, especially at high rates (~7% increased at 5 C) than that of virgin. Furthermore, these results convince that a low concentration of fluorine impurity is desirable in the hydrometallurgical recycling process. More importantly, this study offers implications in the design of high-performance NCM622 cathode materials via coprecipitation production with ion doping in the near future.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1838890
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 48 Vol. 13; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (47)

Review on Synthesis, Characterization, and Electrochemical Properties of Fluorinated Nickel‐Cobalt‐Manganese Cathode Active Materials for Lithium‐Ion Batteries journal March 2020
Voltage Decay in Layered Li-Rich Mn-Based Cathode Materials journal August 2019
Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries journal October 2019
Quantitative analysis of Ni2+/Ni3+ in Li[NixMnyCoz]O2 cathode materials: Non-linear least-squares fitting of XPS spectra journal May 2018
Improved electrochemical property of Ni-rich LiNi0.6Co0.2Mn0.2O2 cathode via in-situ ZrO2 coating for high energy density lithium ion batteries journal June 2020
Synthetic optimization of Li[Ni1/3Co1/3Mn1/3]O2 via co-precipitation journal December 2004
Unravelling the growth mechanism of hierarchically structured Ni1/3Co1/3Mn1/3(OH)2 and their application as precursors for high-power cathode materials journal April 2017
The effect of Fe as an impurity element for sustainable resynthesis of Li[Ni1/3Co1/3Mn1/3]O2 cathode material from spent lithium-ion batteries journal February 2019
Recycling of lithium-ion batteries: a novel method to separate coating and foil of electrodes journal December 2015
Effect of impurities caused by a recycling process on the electrochemical performance of Li[Ni0.33Co0.33Mn0.33]O2 journal July 2014
LiNi0.5Co0.2Mn0.3O2 hollow microspheres-synthesis, characterization and application as cathode materials for power lithium ion batteries journal February 2018
High-value utilization of graphite electrodes in spent lithium-ion batteries: From 3D waste graphite to 2D graphene oxide journal January 2021
Recycling End-of-Life Electric Vehicle Lithium-Ion Batteries journal November 2019
A closed loop process for recycling spent lithium ion batteries journal September 2014
Synthesis of high performance LiNi1/3Mn1/3Co1/3O2 from lithium ion battery recovery stream journal May 2015
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
Crack-free single-crystalline Ni-rich layered NCM cathode enable superior cycling performance of lithium-ion batteries journal April 2020
Surface engineering of LiNi0.8Mn0.1Co0.1O2 towards boosting lithium storage: Bimetallic oxides versus monometallic oxides journal November 2020
Understanding fundamental effects of Cu impurity in different forms for recovered LiNi0.6Co0.2Mn0.2O2 cathode materials journal December 2020
Hydrometallurgical recovery of metal values from sulfuric acid leaching liquor of spent lithium-ion batteries journal April 2015
Facilitating the Operation of Lithium-Ion Cells with High-Nickel Layered Oxide Cathodes with a Small Dose of Aluminum journal April 2018
Copper Impurity Effects on LiNi 1/3 Mn 1/3 Co 1/3 O 2 Cathode Material journal September 2015
Investigation of Fluorine and Nitrogen as Anionic Dopants in Nickel-Rich Cathode Materials for Lithium-Ion Batteries journal December 2018
Enhanced Electrochemical Performance of the Lithium-Manganese-Rich Cathode for Li-Ion Batteries with Na and F CoDoping journal September 2019
Systematic Study of Al Impurity for NCM622 Cathode Materials journal June 2020
Unveiling the Influence of Carbon Impurity on Recovered NCM622 Cathode Material journal April 2021
A Critical Review and Analysis on the Recycling of Spent Lithium-Ion Batteries journal December 2017
High Performance Cathode Recovery from Different Electric Vehicle Recycling Streams journal September 2018
Electron Transfer Mechanisms upon Lithium Deintercalation from LiCoO 2 to CoO 2 Investigated by XPS journal January 2008
Analysis of the Growth Mechanism of Coprecipitated Spherical and Dense Nickel, Manganese, and Cobalt-Containing Hydroxides in the Presence of Aqueous Ammonia journal April 2009
Mechanisms of Nucleation and Growth of Nanoparticles in Solution journal July 2014
Issues and challenges facing rechargeable lithium batteries journal November 2001
A reflection on lithium-ion battery cathode chemistry journal March 2020
Hierarchical nickel valence gradient stabilizes high-nickel content layered cathode materials journal April 2021
Recycling lithium-ion batteries from electric vehicles journal November 2019
Closed Loop Recycling of Electric Vehicle Batteries to Enable Ultra-high Quality Cathode Powder journal February 2019
Examining different recycling processes for lithium-ion batteries journal February 2019
Hierarchical Porous LiNi1/3Co1/3Mn1/3O2 Nano-/Micro Spherical Cathode Material: Minimized Cation Mixing and Improved Li+ Mobility for Enhanced Electrochemical Performance journal May 2016
Double-shelled hollow microspheres of LiMn2O4 for high-performance lithium ion batteries journal January 2011
A novel method to recycle mixed cathode materials for lithium ion batteries journal January 2013
LiNi1/3Co1/3Mn1/3O2 hollow nano-micro hierarchical microspheres with enhanced performances as cathodes for lithium-ion batteries journal January 2013
Stabilizing nickel-rich layered oxide cathodes by magnesium doping for rechargeable lithium-ion batteries journal January 2019
Impurity removal with highly selective and efficient methods and the recycling of transition metals from spent lithium-ion batteries journal January 2019
Revealing the correlation between structural evolution and Li + diffusion kinetics of nickel-rich cathode materials in Li-ion batteries journal January 2020
Factors that affect Li mobility in layered lithium transition metal oxides journal September 2006
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal September 1976
R factors in Rietveld analysis: How good is good enough? journal March 2006

Figures / Tables (8)