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Title: Monitoring Redox Processes in Lithium-Ion Batteries by Laboratory-Scale Operando X-ray Emission Spectroscopy

Journal Article · · ACS Applied Materials and Interfaces

Tracking changes in the chemical state of transition metals in alkali-ion batteries is crucial to understanding the redox chemistry during operation. X-ray absorption spectroscopy (XAS) is often used to follow the chemistry through observed changes in the chemical state and local atomic structure as a function of the state-of-charge (SoC) in batteries. In this study, we utilize an operando X-ray emission spectroscopy (XES) method to observe changes in the chemical state of active elements in batteries during operation. Operando XES and XAS were compared by using a laboratory-scale setup for four different battery systems: LiCoO2 (LCO), Li[Ni1/3Co1/3Mn1/3]O2 (NMC111), Li[Ni0.8Co0.1Mn0.1]O2 (NMC811), and LiFePO4 (LFP) under a constant current charging the battery in 10 h (C/10 charge rate). We show that XES, despite narrower chemical shifts in comparison to XAS, allows us to fingerprint the battery SOC in real time. We further demonstrate that XES can be used to track the change in net spin of the probed atoms by analyzing changes in the emission peak shape. As a test case, the connection between net spin and the local chemical and structural environment was investigated by using XES and XAS in the case of electrochemically delithiated LCO in the range of 2–10% lithium removal.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704
OSTI ID:
2469577
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 13 Vol. 16; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (39)

30 Years of Lithium-Ion Batteries journal June 2018
X-ray emission spectroscopy journal August 2009
Preparation and 7Li-NMR study of chemically delithiated Li1−xCoO2 (0<0.5) journal March 1999
Lithium-7 nuclear magnetic resonance and Ti K-edge X-ray absorption spectroscopic investigation of electrochemical lithium insertion in Li4/3+xTi5/3O4 journal June 2003
High resolution 1s core hole X-ray spectroscopy in 3d transition metal complexes—electronic and structural information journal January 2005
Charging of lithium cobalt oxide battery cathodes studied by means of magnetometry journal October 2016
Chemical Sensitivity of Kβ and Kα X-ray Emission from a Systematic Investigation of Iron Compounds journal August 2020
Calcium Valence-to-Core X-ray Emission Spectroscopy: A Sensitive Probe of Oxo Protonation in Structural Models of the Oxygen-Evolving Complex journal November 2019
Nickel-rich Nickel Manganese Cobalt (NMC622) Cathode Lithiation Mechanism and Extended Cycling Effects Using Operando X-ray Absorption Spectroscopy journal December 2020
Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation journal October 2017
Realization of Electron Antidoping by Modulating the Breathing Distortion in BaBiO3 journal April 2021
Experimental and Computational X-ray Emission Spectroscopy as a Direct Probe of Protonation States in Oxo-Bridged Mn IV Dimers Relevant to Redox-Active Metalloproteins journal October 2013
High-resolution manganese x-ray fluorescence spectroscopy. Oxidation-state and spin-state sensitivity journal April 1994
Probing Valence Orbital Composition with Iron Kβ X-ray Emission Spectroscopy journal July 2010
Valence-to-Core X-ray Emission Spectroscopy: A Sensitive Probe of the Nature of a Bound Ligand journal April 2011
In situ/operando synchrotron-based X-ray techniques for lithium-ion battery research journal July 2018
In situ monitoring redox processes in energy storage using UV–Vis spectroscopy journal April 2023
A laboratory-based double X-ray spectrometer for simultaneous X-ray emission and X-ray absorption studies journal January 2019
The insulator-metal transition upon lithium deintercalation from LiCoO2: electronic properties and 7Li NMR study journal January 1999
Oxygen and transition metal involvement in the charge compensation mechanism of LiNi1/3Mn1/3Co1/3O2 cathodes journal January 2012
In-situ oxygen x-ray absorption spectroscopy investigation of the resistance modulation mechanism in LiNbO 2 memristors journal April 2012
In situ investigation of the channel conductance of a Li 1−x CoO 2 (0 < x < 0.5) ionic-electronic transistor journal May 2013
A laboratory-based hard x-ray monochromator for high-resolution x-ray emission spectroscopy and x-ray absorption near edge structure measurements journal November 2014
Laboratory von Hámos X-ray spectroscopy for routine sample characterization journal October 2016
An improved laboratory-based x-ray absorption fine structure and x-ray emission spectrometer for analytical applications in materials chemistry research journal February 2019
Benchtop Nonresonant X-ray Emission Spectroscopy: Coming Soon to Laboratories and XAS Beamlines Near You? journal May 2016
Electronic structure and x-ray spectra of defective oxidesLixCoO2 journal July 2006
Magnetism and structure of Li x Co O 2 and comparison to Na x Co O 2 journal February 2008
Electronic phase diagram of the layered cobalt oxide system Li x CoO 2 ( 0.0 ≤ x ≤ 1.0 ) journal October 2009
Multiplet ligand-field theory using Wannier orbitals journal April 2012
Efficient real-frequency solver for dynamical mean-field theory journal August 2014
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Soft X-ray characterization technique for Li batteries under operating conditions journal July 2009
Semiconductor-metal transition in defect lithium cobaltite journal March 2006
LiCoO[sub 2] Thin-Film Batteries journal January 2005
Nuclear Magnetic Resonance and X-Ray Absorption Spectroscopic Studies of Lithium Insertion in Silver Vanadium Oxide Cathodes journal January 2007
Comparative Study of the Capacity and Rate Capability of LiNiyMnyCo1–2yO2 (y = 0.5, 0.45, 0.4, 0.33) journal January 2011
Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory journal December 2014
Spin and orbital degrees of freedom in transition metal oxides and oxide thin films studied by soft x-ray absorption spectroscopy preprint January 2005