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
Whole-Voltage-Range Oxygen Redox in P2-Layered Cathode Materials for Sodium-Ion Batteries.
Xun-Lu Li,Tian Wang,Yifei Yuan,Xin-Yang Yue,Qin-Chao Wang,Qin-Chao Wang,Junyang Wang,Jun Zhong,Ruoqian Lin,Yuan Yao,Xiao-Jing Wu,Xiqian Yu,Zheng-Wen Fu,Yongyao Xia,Xiao-Qing Yang,Tongchao Liu,Khalil Amine,Zulipiya Shadike,Yong-Ning Zhou,Jun Lu +19 more
TL;DR: In this paper, a P2-layered Na0.5-4.5 V metal-oxide cathode material with intrinsic vacancies in transition-metal (TM) sites and Mg-ions in Na sites was investigated.
Journal ArticleDOI
The Layered Oxides in Lithium and Sodium-Ion Batteries: A Solid-State Chemistry Approach
Journal ArticleDOI
Stabilizing Reversible Oxygen Redox Chemistry in Layered Oxides for Sodium-Ion Batteries
Xin Cao,Xin Cao,Haifeng Li,Yu Qiao,Xiang Li,Min Jia,Min Jia,Jordi Cabana,Haoshen Zhou,Haoshen Zhou,Haoshen Zhou +10 more
Journal ArticleDOI
Native Vacancy Enhanced Oxygen Redox Reversibility and Structural Robustness
Yejing Li,Xuefeng Wang,Xuefeng Wang,Yurui Gao,Qinghua Zhang,Guoqiang Tan,Qingyu Kong,Seong-Min Bak,Gang Lu,Xiao-Qing Yang,Lin Gu,Jun Lu,Khalil Amine,Zhaoxiang Wang,Liquan Chen +14 more
TL;DR: In this article, the vacancy-containing Na4/7[Mn6/7(◻Mn)1/7]O2 (for vacancies in the MnO slab) is presented as a novel cathode material for Na-ion batteries.
Journal ArticleDOI
Chemically engineered graphene oxide as high performance cathode materials for Li-ion batteries
Wei Ai,Zhuzhu Du,Zhanxi Fan,Jian Jiang,Yanlong Wang,Hua Zhang,Linghai Xie,Wei Huang,Wei Huang,Ting Yu,Ting Yu +10 more
TL;DR: In this article, the results demonstrate that the manipulation of oxygen functional groups on GO is an effective strategy to greatly improve the Li storage property of GO-based materials for advanced Li-ion batteries.
References
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Journal ArticleDOI
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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
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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.