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
More filters
Journal ArticleDOI
X‐ray Absorption Spectroscopy Investigation of Lithium‐Rich, Cobalt‐Poor Layered‐Oxide Cathode Material with High Capacity
Daniel Buchholz,Daniel Buchholz,Jie Li,Stefano Passerini,Stefano Passerini,Giuliana Aquilanti,Diandian Wang,Marco Giorgetti +7 more
TL;DR: In this article, an ex-situ X-ray absorption spectroscopy investigation into lithiation-delithiation of the lithium-rich, but cobalt-poor cathode material Li[Li0.2Ni0.16Mn0.56Co0.08]O2 was presented.
Journal ArticleDOI
Probing Reversible Multielectron Transfer and Structure Evolution of Li1.2Cr0.4Mn0.4O2 Cathode Material for Li-Ion Batteries in a Voltage Range of 1.0–4.8 V
TL;DR: Li1.2Cr 0.4O2 (0.4LiCrO2·0.8V) is an interesting intercalation-type cathode material with high theoretical capacity of 387 mAh g-1 based on multiple-electron transfer of Cr3+/Cr6+. In as mentioned in this paper, it has been demonstrated that the reversible Cr3/Cr 6+ redox reaction can only be realized in a wide voltage range between 1.0 and 4.8 V.
Journal ArticleDOI
Solid-state Redox Reaction of Oxide Ions for Rechargeable Batteries
TL;DR: In this paper, the history and development of charge compensation mechanisms with oxide ions for electrode materials of batteries is reviewed, and the future possibility of high-energy lithium/sodium batteries with the oxide ion redox is also discussed.
Journal ArticleDOI
Solid-State NMR on the Family of Positive Electrode Materials Li_2Ru_{1-y}Sn_yO_3 for Li-ion batteries
Elodie Salager,Vincent Sarou-Kanian,Mariyappan Sathiya,Mingxue Tang,Jean Bernard Leriche,Philippe Melin,Zhongli Wang,Hervé Vezin,Catherine Bessada,Michaël Deschamps,Jean-Marie Tarascon +10 more
TL;DR: In this paper, the possibilities offered by ex situ and in situ operando 7Li solid-state nuclear magnetic resonance (NMR) are explored for the Li2Ru1-ySnyO3 family, shown previously to display cationic and anionic redox activity when used as a positive electrode for Li-ion batteries.
Journal ArticleDOI
Oxygen Loss in Layered Oxide Cathodes for Li-Ion Batteries: Mechanisms, Effects, and Mitigation.
TL;DR: This work reviews recent progress in understanding the phenomena of oxygen loss and the resulting structural degradation in layered oxide cathodes and describes the associated structural degradation resulting from the oxygen loss.
References
More filters
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
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: An efficient scheme for calculating the Kohn-Sham ground state of metallic systems using pseudopotentials and a plane-wave basis set is presented and the application of Pulay's DIIS method to the iterative diagonalization of large matrices will be discussed.
Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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.