scholarly journals Demonstrating the steady performance of iron oxide composites over 2000 cycles at fast charge-rates for Li-ion batteries

2016 ◽  
Vol 52 (46) ◽  
pp. 7348-7351 ◽  
Author(s):  
Z. Sun ◽  
E. Madej ◽  
A. Genç ◽  
M. Muhler ◽  
J. Arbiol ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Li Ion Batteries ◽  
Capacity Retention ◽  
Carbon Coated ◽  
Li Ion ◽  
Oxide Composites ◽  
Negative Electrode Materials

The feasibility of using iron oxide as negative electrode materials for safe high-power Li-ion batteries is demonstrated by a carbon-coated FeOx/CNTs composite which delivered specific capacity retention of 84% (445 mA h g−1) after 2000 cycles at 2000 mA g−1 (4C).

Li9Al4Sn5as a new ordered superstructure of the Li13Sn5type

2017 ◽  
Vol 73 (4) ◽  
pp. 337-342 ◽  
Author(s):  
Volodymyr Pavlyuk ◽  
Grygoriy Dmytriv ◽  
Ivan Tarasiuk ◽  
Helmut Ehrenberg
Keyword(s):  
Electrode Materials ◽  
Tight Binding ◽  
Negative Electrode ◽  
Structure Type ◽  
Binary Compound ◽  
Li Ion Batteries ◽  
Compound A ◽  
Li Ion ◽  
Rhombic Dodecahedra ◽  
Negative Electrode Materials

Alloys from the ternary Li–Al–Sn system have been investigated with respect to possible applications as negative electrode materials in Li-ion batteries. This led to the discovery of a new ternary compound, a superstructure of the Li13Sn5binary compound. The ternary stannide, Li9Al4Sn5(nonalithium tetraaluminium pentastannide; trigonal,P\overline{3}m1,hP18), crystallizes as a new structure type, which is an ordered variant of the binary Li13Sn5structure type. One Li and one Sn site have \overline{3}m. symmetry, and all other atoms occupy sites of 3m. symmetry. The polyhedra around all types of atoms are rhombic dodecahedra. The electronic structure was calculated by the tight-binding linear muffin-tin orbital atomic spheres approximation method. The electron concentration is higher around the Sn and Al atoms, which form an [Al4Sn5]m−polyanion.

Combinatorial Study of Sn[sub 1−x]Co[sub x] (0

2006 ◽  
Vol 153 (2) ◽  
pp. A361 ◽  
Author(s):  
J. R. Dahn ◽  
R. E. Mar ◽  
Alyaa Abouzeid
Keyword(s):  
Electrode Materials ◽  
Negative Electrode ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Negative Electrode Materials

Characterization of Li insertion mechanisms in negative electrode materials for Li-ion batteries by Mössbauer spectroscopy and first-principles calculations

2004 ◽  
Vol 835 ◽  
Author(s):  
P.E. Lippens ◽  
L. Aldon ◽  
C.M. Ionica ◽  
F. Robert ◽  
J. Olivier-Fourcade ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Electrode Materials ◽  
Mossbauer Spectroscopy ◽  
Negative Electrode ◽  
Theoretical Spectrum ◽  
Lithium Insertion ◽  
Li Ion Batteries ◽  
Mößbauer Spectroscopy ◽  
Li Ion ◽  
Negative Electrode Materials

ABSTRACTThe Mössbauer spectroscopy is an efficient experimental tool to study lithium insertion mechanisms in negative electrodes of Li-ion batteries at the atomic scale. However, a quantitative interpretation of the experimental data is often difficult due to the complexity of the spectra and we propose to use first-principle calculations of the hyperfine parameters. Three different types of negative electrode materials are considered. First, the experimental 119Sn Mössbauer spectrum obtained for the insertion of 3.5 Li into SnO is compared to the theoretical spectrum, which clearly establishes the existence of Li-Sn stable phases. Then, the analysis of the 121Sb Mössbauer spectra for metal antimonides at the end of the first discharge shows different behaviours depending on the lithium rate. Finally, tin and iron doped titanates are considered to study changes in Ti local environments during lithium insertion.

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