skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Fe4+/3+ Redox Mechanism in NaFeO2: A Simultaneous Operando Nuclear Resonance and X-ray Scattering Study

Journal Article · · Batteries & Supercaps
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [4]
  1. CIC Energigune, Miñano (Spain); Delft Univ. of Technology (Netherlands); Alistore European Research Institute, Amiens (France)
  2. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
  3. Univ. Liège (Belgium); Forschungszentrum Jülich GmbH (Germany)
  4. Univ. Montpellier (France); Reseau sur le Stockage Electrochimique de l’Energie (RS2E), Amiens (France)
  5. Forschungszentrum Jülich GmbH (Germany); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Alistore European Research Institute, Amiens (France); Univ. Montpellier (France); Reseau sur le Stockage Electrochimique de l’Energie (RS2E), Amiens (France)

Abstract Simultaneous operando Nuclear Forward Scattering and transmission X‐ray diffraction and 57 Fe Mössbauer spectroscopy measurements were carried out in order to investigate the electrochemical mechanism of NaFeO 2 vs. Na metal using a specifically designed in situ cell. The obtained data were analysed using an alternative and innovative data analysis approach based on chemometric tools such as Principal Component Analysis (PCA) and Multivariate Curve Resolution ‐ Alternating Least Squares (MCR‐ALS). This approach, which allows the unbiased extraction of all possible information from the operando data, enabled the stepwise reconstruction of the independent “real” components permitting the description of the desodiation mechanism of NaFeO 2 . This wealth of information allows a clear description of the electrochemical reaction at the redox‐active iron centres, and thus an improved comprehension of the cycling mechanisms of this material vs. sodium.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
Alistore-European Research Institute; Ministerio de Ciencia e Innovación; RS2E; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1775237
Alternate ID(s):
OSTI ID: 1804568
Journal Information:
Batteries & Supercaps, Vol. 3, Issue 12; ISSN 2566-6223
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (22)

On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material journal April 2011
Nuclear Resonance Beamline at ESRF journal December 1996
Applying chemometrics to study battery materials: Towards the comprehensive analysis of complex operando datasets journal March 2019
Electrochemistry and Solid‐State Chemistry of NaMeO 2 (Me = 3d Transition Metals) journal June 2018
Iron migration and oxygen oxidation during sodium extraction from NaFeO2 journal May 2018
Sodium deintercalation from sodium iron oxide journal June 1994
The Electrochemical Sodiation of FeSb 2 : New Insights from Operando 57 Fe Synchrotron Mössbauer and X-Ray Absorption Spectroscopy journal October 2018
An Electrochemical Cell for Operando Study of Lithium Batteries Using Synchrotron Radiation journal January 2010
Nuclear forward scattering by the 68.7 keV state of 73 Ge in CaGeO 3 and GeO 2 journal October 2013
Electrochemical and Thermal Properties of α-NaFeO 2 Cathode for Na-Ion Batteries journal January 2013
Observation of electrochemically active Fe 3+ /Fe 4+ in LiCo 0.8 Fe 0.2 MnO 4 by in situ Mössbauer spectroscopy and X-ray absorption spectroscopy journal January 2019
Anionic Redox Activity as a Key Factor in the Performance Degradation of NaFeO 2 Cathodes for Sodium Ion Batteries journal May 2019
Crystal Structures and Electrode Performance of Alpha-NaFeO2 for Rechargeable Sodium Batteries journal January 2012
New Insights into the Performance Degradation of Fe-Based Layered Oxides in Sodium-Ion Batteries: Instability of Fe 3+ /Fe 4+ Redox in α-NaFeO 2 journal September 2015
Whole powder pattern decomposition methods and applications: A retrospection journal December 2005
γ -Ray Wavelength Standard for Atomic Scales journal July 2000
MAXIPIX, a fast readout photon-counting X-ray area detector for synchrotron applications journal January 2011
Mössbauer spectroscopy using synchrotron radiation journal February 1991
Pursuit of Sustainable Iron-Based Sodium Battery Cathodes: Two Case Studies journal February 2016
Jahn–Teller Assisted Na Diffusion for High Performance Na Ion Batteries journal September 2016
On the dynamics of transition metal migration and its impact on the performance of layered oxides for sodium-ion batteries: NaFeO 2 as a case study journal January 2018
Understanding the Structural Evolution and Redox Mechanism of a NaFeO 2 -NaCoO 2 Solid Solution for Sodium-Ion Batteries journal June 2016

Related Subjects