Journal ArticleDOI
A Transmission Electron Microscopy Study of the Reactivity Mechanism of Tailor-Made CuO Particles toward Lithium
TLDR
In this article, the electrochemical reactivity of tailor-made CuO powders prepared according to a new low-temperature synthesis method was studied by a combination of transmission electron microscopy (TEM) and electrochemical techniques.Abstract:
The electrochemical reactivity of tailor-made CuO powders prepared according to a new low-temperature synthesis method was studied by a combination of transmission electron microscopy (TEM) and electrochemical techniques. All the processes involved during cycling were successfully identified. We show that the reduction mechanism of CuO by lithium involves the formation of a solid solution of Cu II 1x Cu I x O 1 1/2 :, 0 ≤ x ≤ 0.4, a phase transition into Cu 2 O, then the formation of Cu nanograins dispersed into a lithia matrix ( Li 2 O) followed by the growth of an organic-type coating. This one is responsible for the extra capacity observed on the voltage vs. composition curve. During the subsequent charge, the organic layer vanishes first, and then the Cu grains are partially or fully oxidized with a concomitant decomposition of Li 2 O. The formation of Li 2 O and Cu nanograins and then the one of Cu. CuO, and Cu 2 O nanograins on the first discharge and subsequent charge, respectively, were identified by high-resolution TEM studies. These results enabled a better understanding of the processes governing the reactivity of 3d metal oxides vs. lithium down to 0.02 V.read more
Citations
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Metal Oxides and Oxysalts as Anode Materials for Li Ion Batteries
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Beyond Intercalation-Based Li-Ion Batteries: The State of the Art and Challenges of Electrode Materials Reacting Through Conversion Reactions
TL;DR: This Progress Report highlights the recent developments and the future prospects of the use of phases that react through conversion reactions as both positive and negative electrode materials in Li-ion batteries.
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Recent developments in nanostructured anode materials for rechargeable lithium-ion batteries
TL;DR: Nanostructured materials such as nano-carbons, alloys, metal oxides, and metal sulfides/nitrides have been used as anodes for rechargeable lithium-ion batteries.
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Research on Advanced Materials for Li‐ion Batteries
TL;DR: In this article, a review of recent progress dedicated to the anode and cathode materials that have the potential to fulfil the crucial factors of cost, safety, lifetime, durability, power density, and energy density is presented.
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Li-alloy based anode materials for Li secondary batteries.
TL;DR: This critical review focuses on anode materials composed of Group IV and V elements with their composites including Ag and Mg metals as well as transition metal oxides which have been intensively investigated.
References
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Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries
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Journal ArticleDOI
Particle Size Effects on the Electrochemical Performance of Copper Oxides toward Lithium
Sylvie Grugeon,S. Laruelle,R. Herrera-Urbina,Loic Dupont,Philippe Poizot,Jean-Marie Tarascon +5 more
TL;DR: In this paper, the electrochemical reactivity of tailor-made or CuO powders prepared according to the polyol process was tested in rechargeable Li cells and the ability of copper oxide-based Li cells to retain their capacity upon numerous cycles was found to be strongly dependent on the particle size, and the best results were obtained with 1 μm and CuO particles.
Journal ArticleDOI
Li Metal‐Free Rechargeable LiMn2 O 4 / Carbon Cells: Their Understanding and Optimization
TL;DR: In this paper, LiMn{sub 2}O{sub 4} as the positive electrode and carbon as the negative electrode were optimized as a function of various operating parameters.
Journal ArticleDOI
CuO: X-ray single-crystal structure determination at 196 K and room temperature
S Asbrink,A Waskowska +1 more
TL;DR: An X-ray single-crystal determination of the CuO structure has been made at 196 K, i.e. below the Neel temperature 230 K, and, as a check, the crystal structure at room temperature was also determined as discussed by the authors.