Lithium Transition Metal Oxides

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: closed (10 July 2021) | Viewed by 5210

Special Issue Editors


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Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba 305-8577, Japan
Interests: cathode material; annode material; crystal structure; local structure; phase transition; electronic state; in situ experiment; themal effect on voltage; pressure effect on voltage; calculation/simulation; phenomenological model; other topics on sodium-ion battery material
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Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 620066 Ekaterinburg, Russia
Interests: electrochemistry; energy conversion technology; hydrogen production; electrochemical analysis; solid state chemistry and electrochemistry; solid oxide fuel cells (SOFCs); solid oxide electrolysis cells (SOECs); protonic ceramic fuel cells (PCFCs); protonic ceramic electrolysis cells (PCECs); reversible solid oxide cells (rSOCs); sensors; energy conversion; steam electrolysis; proton transportation; chemical engineering, synthesis and characterization of solid oxide materials with different nature of conductivity (ionic, electronic, mixed) for energy conversion technologies; design and fabrication of solid oxide electrochemical cells (fuel cells, electrolysis cells, sensors, pumps, converters, membrane reactors)
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Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia
Interests: crystal structure; magnetic structure; microstructure; defects; diffraction; microscopy
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Special Issue Information

Dear Colleagues,

Lithium transition metal oxides have played a critical role in the commercialization and wide scale adaptation of the lithium-ion battery technology. The lithium transition metal oxides, which include lithium cobalt oxide (LCO), lithium manganese oxide (LMO), lithium nickel manganese cobalt oxide (NMC), and lithium nickel cobalt aluminium oxide (NCA), are typically used as positive electrode materials in the lithium-ion batteries. However, these materials pose limitations in terms of end-of-charge voltage, energy density, power density, and life of the batteries. A substantial research has been conducted to overcome these limitations through modification of existing oxide materials. Nickel rich oxides, lithium-rich oxides, and high voltage spinel oxides are some of the examples of emerging positive electrode materials. Research on surface coatings and coating methods to increase the end-of-charge voltage of LCO based batteries has also been into the focus. Successful integration of these emerging materials will require an extensive understanding of the synthesis methods, lithium intercalation-deintercalation mechanisms, phase and structural changes, interaction with electrolyte, the negative electrode, and solid electrolyte interphase (SEI) layer, and long-term reliability.

We invite researchers to contribute to the Special Issue on “Lithium Transition Metal Oxides” which is intended to serve as a forum covering broad aspects of science, technology and the applications of various lithium transition metal oxides as positive electrode materials in lithium-ion batteries.

 The potential topics include, but are not limited to:

-    Synthesis of lithium transition metal oxides

-    Phase and structural changes during lithium intercalation-deintercalation

-    Interaction with electrolyte, negative electrode, and solid electrolyte interphase (SEI) layer

-    Properties of interfacial layers on transition metal oxides

-    Advanced material charcaterisation techniques

-    Application of surface coatings for interfacial and structural stability

-  Computational modeling of Lithium ion battery electrodes and electrode-electrolyte interfaces

Prof. Dr. Yutaka Moritomo
Dr. Dmitry Medvedev
Prof. Dr. Anton Meden
Guest Editors

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Keywords

  • Lithium-ion battery
  • Lithium transition metal oxides
  • Crystal structures
  • Synthesis
  • Degradation
  • mechanisms
  • Material characterization
  • Interfacial stability
  • Surface coatings

Published Papers (1 paper)

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Research

13 pages, 38242 KiB  
Article
Magnesium Insertion and Related Structural Changes in Spinel-Type Manganese Oxides
by Ana Robba, Elena Tchernychova, Jan Bitenc, Anna Randon-Vitanova and Robert Dominko
Crystals 2021, 11(8), 984; https://doi.org/10.3390/cryst11080984 - 19 Aug 2021
Cited by 1 | Viewed by 1883
Abstract
Commercial LiMn2O4 powder was used as the base material for probing magnesiation, cycling behavior, and structural stability/changes in (MgxLi1-x)Mn2O4 spinel cathodes in aqueous Mg(NO3)2 and non-aqueous Mg(TFSI)2/diglyme and [...] Read more.
Commercial LiMn2O4 powder was used as the base material for probing magnesiation, cycling behavior, and structural stability/changes in (MgxLi1-x)Mn2O4 spinel cathodes in aqueous Mg(NO3)2 and non-aqueous Mg(TFSI)2/diglyme and Mg(Mg(HFIP)2 − 2Al(HFIP)3/diglyme electrolytes. Each of the samples was delithiated and, then, magnesiated electrochemically in the corresponding electrolyte. The electrochemical activity of the cathode cycled in aqueous electrolyte showed high reversibility during the oxidation process; however, large polarization and a relatively fast capacity fading were the culprits of the system. Cycling in Mg(TFSI)2/diglyme electrolyte solution resulted in much lower initial specific capacity compared to an aqueous counterpart, as well as a much faster failure. On the other hand, cycling in Mg(HFIP)2 − 2Al(HFIP)3/diglyme electrolyte solution demonstrated excellent cycling performance with very low polarization in the first cycles. The observed voltages for this system were near theoretical values for the Mg insertion. Although the electrochemical measurements suggest reversible magnesiation, detailed structural and analytical STEM investigation revealed the differences in the atomic structure and Mn valence of all three cathode samples upon cycling. The electrolytes’ influence on the structural rearrangement during Mg insertion is discussed for each of the three systems. Full article
(This article belongs to the Special Issue Lithium Transition Metal Oxides)
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