On the Electroanalytical Characterization of LixCoO2, LixNiO2 and LiMn2O4 (Spinel) Electrodes in Repeated Lithium Intercalation-Deintercalation Processes

1997 ◽  
Vol 496 ◽  
Author(s):  
D. Aurbach ◽  
M. D. Levi ◽  
E. Levi ◽  
B. Markovsky ◽  
G. Salitra ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Failure Mechanisms ◽  
Lithium Intercalation ◽  
Li Ion Batteries ◽  
Fast Scan Cyclic Voltammetry ◽  
Limn2o4 Spinel ◽  
Li Ion

ABSTRACTThis paper reports on electroanalytical studies of the intercalation-deintercalation of lithium into lithiated transition metal oxides which are used as cathodes for Li ion batteries. These include LixCoO2 LixNiO2 and LixMn2O4 spinel. The basic electroanalytical response of these systems in LiAsF6 1M/EC-DMC solutions was obtained from the simultaneous use of slow and fast scan cyclic voltammetry (SSCV), potentiostatic intermittent titration (PITT) (from which D vs. E was calculated), and impedance spectroscopy (EIS). Surface sensitive FTIR spectroscopy and XRD were also used for surface and 3D characterization, respectively. A large and important denominator was found in the electrochemical behavior of lithium intercalation-deintercalation into these transition metal oxides and graphite. The use of the electroanalytical response of these systems as a tool for the study of stabilization and failure mechanisms of these materials as cathodes in rechargeable Li batteries is demonstrated and discussed.

Facile synthesis of nanostructured transition metal oxides as electrodes for Li-ion batteries

2017 ◽  
Author(s):  
Denis P. Opra ◽  
Sergey V. Gnedenkov ◽  
Alexander A. Sokolov ◽  
Alexander N. Minaev ◽  
Valery G. Kuryavyi ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Li Ion Batteries ◽  
Facile Synthesis ◽  
Li Ion

scholarly journals Improved layered mixed transition metal oxides for Li-ion batteries

2010 ◽  
Author(s):  
Marca M. Doeff ◽  
Thomas Conry ◽  
James Wilcox
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Mixed Transition

scholarly journals Towards controlling the reversibility of anionic redox in transition metal oxides for high-energy Li-ion positive electrodes

2021 ◽  
Vol 14 (4) ◽  
pp. 2322-2334
Author(s):  
Yang Yu ◽  
Pinar Karayaylali ◽  
Dimosthenis Sokaras ◽  
Livia Giordano ◽  
Ronghui Kou ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Energy ◽  
Li Ion Batteries ◽  
Positive Electrodes ◽  
Li Ion

Transition metal d-states and oxygen p-states overlap and oxygen lattice integrity dictates the oxygen redox reversibility in metal substituted Li2RuO3 positive electrodes for Li-ion batteries.

Toward Establishing Electronic and Phononic Signatures of Reversible Lattice Oxygen Oxidation in Lithium Transition Metal Oxides For Li-Ion Batteries

2020 ◽  
Vol 32 (13) ◽  
pp. 5502-5514
Author(s):  
Nenian Charles ◽  
Yang Yu ◽  
Livia Giordano ◽  
Roland Jung ◽  
Filippo Maglia ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Lattice Oxygen ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Oxygen Oxidation

Preparation and Characterization of Several Conducting Transition Metal Oxides

1989 ◽  
Vol 156 ◽  
Author(s):  
Aaron Wold ◽  
Kirby Dwight
Keyword(s):  
Transition Metal ◽  
Single Crystal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Structure Property ◽  
Metallic Behavior ◽  
Structure Property Relationships ◽  
Conduction Bands ◽  
Metal Metal

ABSTRACTThe structure-property relationships of several conducting transition metal oxides, as well as their preparative methods, are presented in this paper. The importance of preparing homogeneous phases with precisely known stoichiometry is emphasized. A comparison is also made of the various techniques used to prepare both polycrystalline and single crystal samples. For transition metal oxides, the metallic properties are discussed either in terms of metal-metal distances which are short enough to result in metallic behavior, or in terms of the formation of a П* conduction band resulting from covalent metal-oxygen interactions. Metallic behavior is observed when the conduction bands are populated with either electrons or holes. The concentration of these carriers can be affected by either cation or anion substitutions. The discussion in this presentation will be limited to the elements Re, Ti, V, Cr, Mo, and Cu.

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