Journal ArticleDOI
Reversible anionic redox chemistry in high-capacity layered-oxide electrodes
Mariyappan Sathiya,Gwenaëlle Rousse,Kannadka Ramesha,C.P. Laisa,Hervé Vezin,Moulay Tahar Sougrati,Moulay Tahar Sougrati,Marie-Liesse Doublet,Dominique Foix,Danielle Gonbeau,Danielle Gonbeau,Wesley Walker,Annigere S. Prakash,M. Ben Hassine,M. Ben Hassine,Loic Dupont,Loic Dupont,Jean-Marie Tarascon,Jean-Marie Tarascon +18 more
TLDR
In this article, the reactivity of a class of high-capacity oxides with a single redox cation has been investigated and it has been shown that these oxides exhibit sustainable reversible capacities as high as 230 mAh/g−1 and good cycling behavior with no signs of voltage decay.Abstract:
Li-ion batteries have contributed to the commercial success of portable electronics and may soon dominate the electric transportation market provided that major scientific advances including new materials and concepts are developed. Classical positive electrodes for Li-ion technology operate mainly through an insertion-deinsertion redox process involving cationic species. However, this mechanism is insufficient to account for the high capacities exhibited by the new generation of Li-rich (Li1+xNiyCozMn(1−x−y−z)O2) layered oxides that present unusual Li reactivity. In an attempt to overcome both the inherent composition and the structural complexity of this class of oxides, we have designed structurally related Li2Ru1−ySnyO3 materials that have a single redox cation and exhibit sustainable reversible capacities as high as 230 mA h g−1. Moreover, they present good cycling behaviour with no signs of voltage decay and a small irreversible capacity. We also unambiguously show, on the basis of an arsenal of characterization techniques, that the reactivity of these high-capacity materials towards Li entails cumulative cationic (Mn+→M(n+1)+) and anionic (O2−→O22−) reversible redox processes, owing to the d-sp hybridization associated with a reductive coupling mechanism. Because Li2MO3 is a large family of compounds, this study opens the door to the exploration of a vast number of high-capacity materials.read more
Citations
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Journal ArticleDOI
Relationship between rate performance and electronic/structural changes during oxygen redox of lithium-rich 4d/3d transition metal oxides
Aruto Watanabe,Kentaro Yamamoto,Yuki Orikasa,Masatsugu Oishi,Koji Nakanishi,Tomoki Uchiyama,Toshiyuki Matsunaga,Yoshiharu Uchimoto +7 more
TL;DR: Li-rich solid solution cathode materials having 3D transition metals or 4d transition metals are the candidate of next generation cathode material as discussed by the authors. But the performance of Li1.2Ni0.13Co 0.13Mn 0.54O2 cathode was not clarified.
Journal ArticleDOI
Prospect and Status of Polyanionic Lithium Cobalt Silicates as High Energy‐Density and Safe Cathode Materials for Lithium‐Ion Batteries
Journal ArticleDOI
Reactions of the Li2MnO3 Cathode in an All-Solid-State Thin-Film Battery during Cycling.
Kazuhiro Hikima,Kazuhiro Hikima,Yoyo Hinuma,Keisuke Shimizu,Kota Suzuki,Sou Taminato,Masaaki Hirayama,Takuya Masuda,Kazuhisa Tamura,Ryoji Kanno +9 more
TL;DR: In this article, an in situ surface X-ray diffraction (XRD) technique was used to evaluate the structural change of the cathode material Li2MnO3 that was deposited as an epitaxial film with an (001) orientation in an all-solid-state battery.
Journal ArticleDOI
Enhanced Electrochemical Performance of Ti‐Doping Li1.15Ni0.47Sb0.38O2 as Lithium‐excess Cathode for Lithium‐ion Batteries
TL;DR: In this article, the effect of doping on the structure and electrochemical properties of Li 1.15−xNi 0.47Sb0.38O2 is studied, and it is shown that the Ti ions have been doped into the Li-site in the lithium layer and formed a distortion TiO6 octahedron, which keeps the stability of nanohighway in the electrochemical process.
Journal ArticleDOI
High-performance Na ion cathodes based on the ubiquitous and reversible O redox reaction
M. Hussein N. Assadi,M. Hussein N. Assadi,Marco Fronzi,Marco Fronzi,Michael J. Ford,Yasuteru Shigeta +5 more
TL;DR: In this paper, the authors identified new compounds with excellent energy storage properties that rely on oxygen states for charge compensation during the redox reaction, and these compounds are suitable for all-solid-state battery applications.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
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Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
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Journal ArticleDOI
Issues and challenges facing rechargeable lithium batteries
TL;DR: A brief historical review of the development of lithium-based rechargeable batteries is presented, ongoing research strategies are highlighted, and the challenges that remain regarding the synthesis, characterization, electrochemical performance and safety of these systems are discussed.
Journal ArticleDOI
Building better batteries
TL;DR: Researchers must find a sustainable way of providing the power their modern lifestyles demand to ensure the continued existence of clean energy sources.