Published November 2018 | Version v1
Journal article Metadata-only

Laboratory operando Fe and Mn K-edges XANES and Mössbauer studies of the LiFe0.5Mn0.5PO4 cathode material

Creators

  • 1. The Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, 344090 Rostov-on-Don (Russian Federation)
  • 2. Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 18 Kutateladze, 630128 Novosibirsk (Russian Federation)
  • 3. Institute of Physics, Southern Federal University, Stachka Avenue 200/1, 344090 Rostov-on-Don (Russian Federation)
  • 4. Department of Physics, Faculty of Science, Al-Azhar University, Assiut 71542 (Egypt)
  • 5. Department of Physics, CrisDi and NIS Interdepartmental Centres and INSTM Reference Center, University of Turin, via Pietro Giuria 1, 10125 Turin (Italy)

Description

Highlights: • Developed the cell for operando XAS and Mössbauer measurements with laboratory equipment. • Separated redox processes for Fe and Mn ions revealed in LeFe0.5Mn0.5PO4 cathode. • Oxidation state and local structure changes for d-metal ions during (de)lithiation described. • Homogeneous distribution of Fe and Mn ions in LeFe0.5Mn0.5PO4 was confirmed. - Abstract: We have developed and tested cell for laboratory operando diagnostics of Li-ion cathode materials. Local atomic and electronic structure of LiFe1-xMnxPO4 olivine cathode was studied by means of Fe and Mn K-edges XAS and Mössbauer spectroscopy. Analysis of XAS data allows us to follow the structural and oxidation state changes occurring during the cell cycling. Together with operando Mössbauer spectroscopy sensitive to the fine Fe ions local coordination distortions escaping from laboratory XANES, we are able to prove the homogeneity of Fe and Mn ions distribution.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.radphyschem.2018.11.019

Additional details

Identifiers

DOI
10.1016/j.radphyschem.2018.11.019;
PII
S0969806X18309873;

Publishing Information

Journal Title
Radiation Physics and Chemistry (1993)
Journal Issue
2018
Journal Page Range
vp.
ISSN
0969-806X
CODEN
RPCHDM

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50080365
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ABSORPTION SPECTROSCOPY; CATHODES; ELECTRONIC STRUCTURE; IRON IONS; LITHIUM ION BATTERIES; MANGANESE IONS; REDOX PROCESS; X-RAY SPECTROSCOPY
Descriptors DEC
CHARGED PARTICLES; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELECTRODES; ENERGY STORAGE SYSTEMS; ENERGY SYSTEMS; IONS; REPROCESSING; SEPARATION PROCESSES; SPECTROSCOPY

Optional Information

Notes
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