Journal ArticleDOI
Powder diffraction study of LiCu 2 O 2 crystals
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LiCu 2 O 2 crystals were studied by powder X-ray diffraction and phase analysis showed that the applied growth conditions are suitable for preparation of a single-phase compound.Abstract:
LiCu 2 O 2 crystals grown by spontaneous crystallization from the fluxed melt were studied by powder X-ray diffraction. The phase analysis shows that the applied growth conditions are suitable for preparation of a single-phase compound. The as-grown crystals contain only traces of foreign phases (Li 2 CuO 2 , CuO, Cu 2 O) typical for preparation of the LiCu 2 O 2 compound. Attempts to anneal or quench the as-grown crystals led to two-phase samples containing LiCu 2 O 2 and LiCu 3 O 3 . X-ray powder diffraction pattern of a LiCu 2 O 2 crystal is reported and compared with literature data. The crystal structure is orthorhombic, space group Pnma , in agreement with literature data. Lattice parameters of the studied sample are a =5.7286(2) A, b =2.8588(1) A, and c =12.4143(3) A. Time evolution of a diffraction pattern illustrates a slow increase of the secondary-phases contribution assumed to be due to interaction of the powdered crystal with humid air. A brief summary of compounds known in the Li–Cu–O system is includedread more
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Journal ArticleDOI
Ab initio calculation of d-d excitations in quasi-one-dimensional Cu d(9) correlated materials
Hsiao-Yu Huang,Nikolay A. Bogdanov,Liudmila Siurakshina,Liudmila Siurakshina,Peter Fulde,Peter Fulde,Jeroen van den Brink,Liviu Hozoi +7 more
TL;DR: In this paper, a complete set of local excitations has been calculated for cuprates with corner sharing (Sr${}_{2}$CuO${}_3}$ and SrCuO{}_4}$) and edge-sharing (LiVCuO={}_6}$ octahedra (KCuF${} ǫ ) for the ladder system CaCu{} Ã 0.
Journal ArticleDOI
Thermodynamic investigations of copper oxides used as conversion type electrodes in lithium ion batteries
Maren Lepple,Robert Adam,Damian M. Cupid,Peter Franke,Thomas Bergfeldt,Daniel Wadewitz,David Rafaja,Hans Jürgen Seifert +7 more
TL;DR: In this paper, the LiCu2O2 phase was synthesized using the solid-state method and characterized with X-ray powder diffraction technique and Rietveld analysis as well as inductively coupled plasma-optical emission spectrometry (ICP-OES).
Journal ArticleDOI
Growth and properties of LiCu2O2-NaCu2O2 crystals
TL;DR: In this paper, a plate-like Li1 − xNaxCu2O2 single crystals up to 2 × 10 × 10 mm in dimensions have been grown by slowly cooling Li2CO3·xNa2O 2·4CuO melts in alundum crucibles in air.
BookDOI
Kupfer- und Eisenoxide als Konversions-Elektrodenmaterialien für Lithium-Ionen-Batterien: Thermodynamische und Elektrochemische Untersuchungen
TL;DR: In this article, a thermodynamic approach was used to elucidate the electrochemical behavior of conversion-type electrodes using Li-Cu-O and Li-Fe-O as model material systems.
Journal ArticleDOI
Heat Capacities of LiCu2O2 and CuO in the Temperature Range 323-773 K and Cu2O in the Temperature Range 973-1273 K
TL;DR: In this article, differential scanning calorimetry was used to measure the heat capacities of binary and ternary oxides in the Li-Cu-O system for the development of new anode materials for lithium ion batteries based on copper oxides.
References
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A new cathode material LiCu2O2 for secondary lithium batteries
TL;DR: In this article, a cathode material LiCu2O2 has been synthesized by the sol-gel method and the X-ray diffraction pattern of the material was matched with the JCPDS data from which it was inferred that the material is LiCu 2O2.
Journal Article
On the possibility of direct replacement of mercury-zinc cells by lithium cells with copper-oxide cathode
TL;DR: In this article, the behavior of a new lithium cell with copperoxide cathode, GR2174P, 21 mm in diameter and 7.4 mm in height, was studied under a load of 60 Ohm.