Journal ArticleDOI
Electrochemically Active Lithia/Metal and Lithium Sulfide/Metal Composites
Mark N. Obrovac,J. R. Dahn +1 more
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TLDR
Li 2 O/M and Li 2 S/M (M = Co, Fe) composites that contain electrochemically active lithium were made by ballmilling Li 2 O with metal powder as discussed by the authors.Abstract:
This paper demonstrates Li 2 O/M and Li 2 S/M (M = Co, Fe) composites that contain electrochemically active lithium. The composites were made by ballmilling Li 2 O or Li 2 S with metal powder. The resulting materials had average grain sizes of ∼100 A and enormous reversible capacities of up to 600 mAh/g. When cycled within appropriate voltage limits, the electrodes showed no capacity fading. These composites are compatible with lithium-ion technology and could provide a safe, high-energy density alternative to conventional intercalation electrodes.read more
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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.
Journal ArticleDOI
Designing high-energy lithium–sulfur batteries
TL;DR: This review aims to summarize major developments in the field of lithium-sulfur batteries, starting from an overview of their electrochemistry, technical challenges and potential solutions, along with some theoretical calculation results to advance the understanding of the material interactions involved.
Journal ArticleDOI
Advances in Li–S batteries
Xiulei Ji,Linda F. Nazar +1 more
TL;DR: Li-S batteries have received everincreasing attention recently due to their high theoretical specific energy density, which is 3 to 5 times higher than that of Li ion batteries based on intercalation reactions as discussed by the authors.
Journal ArticleDOI
Nanostructured sulfur cathodes
TL;DR: In this review, recent developments on nanostructured sulfur cathodes and mechanisms behind their operation are presented and discussed and progress on novel characterization of sulfurCathodes is summarized, as it has deepened the understanding of sulfur cathode and will guide further rational design of sulfur electrodes.
Journal ArticleDOI
Stabilizing lithium-sulphur cathodes using polysulphide reservoirs
TL;DR: A new concept to mitigate the problem of dissolution of intermediate polysulphide reaction species into the electrolyte is reported, which relies on the design principles of drug delivery and functions as an internal polysULphide reservoir during the reversible electrochemical process to give rise to long-term stabilization and improved coulombic efficiency.
References
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Journal ArticleDOI
Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries
TL;DR: It is reported that electrodes made of nanoparticles of transition-metal oxides (MO), where M is Co, Ni, Cu or Fe, demonstrate electrochemical capacities of 700 mA h g-1, with 100% capacity retention for up to 100 cycles and high recharging rates.
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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.
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Lithium Insertion in Carbons Containing Nanodispersed Silicon
A. M. Wilson,J. R. Dahn +1 more
TL;DR: In this article, the authors used chemical vapor deposition of benzene and of silicon-containing precursors to obtain graphite and pregraphitic carbons containing nanodispersed silicon.
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Electrochemistry of Pyrite‐Based Cathodes for Ambient Temperature Lithium Batteries
TL;DR: In this paper, the charge and discharge mechanisms of Li/FeS{sub 2} and Li/Li S{sub y} cells near room temperature are studied by in situ x-ray diffraction and in situ {sup 57}Fe Mossbauer spectroscopy.
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The Electrochemical Displacement Reaction of Lithium with Metal Oxides
TL;DR: In this article, the electrochemical reaction of lithium with a-LiFeO2, b-Li5FeO4, and CoO is studied by in situ X-ray diffraction and in situ Mossbauer measurements.