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
Spinel/Layered Heterostructured Lithium-Rich Oxide Nanowires as Cathode Material for High-Energy Lithium-Ion Batteries
Ruizhi Yu,Xiaohui Zhang,Tao Liu,Li Yang,Lei Liu,Yu Wang,Xianyou Wang,Hongbo Shu,Xiukang Yang +8 more
TL;DR: The remarkable electrochemical properties of lithium-rich oxide material can be connected with the spinel/layered heterostructure, which is in favor of Li+ transport kinetics and enhancing structural stability during the cyclic process.
Journal ArticleDOI
Considering Critical Factors of Li-rich Cathode and Si Anode Materials for Practical Li-ion Cell Applications.
TL;DR: A perspective on these matters is suggested and the requirements for each material are delineated, in addition to introducing a full-cell prototype utilizing a Li-rich cathode and Si anode.
Journal ArticleDOI
Explore the Effects of Microstructural Defects on Voltage Fade of Li- and Mn-Rich Cathodes
Enyuan Hu,Yingchun Lyu,Yingchun Lyu,Huolin L. Xin,Jue Liu,Lili Han,Seong-Min Bak,Jianming Bai,Xiqian Yu,Xiqian Yu,Hong Li,Xiao-Qing Yang +11 more
TL;DR: It is found that the nanosized micro structural defects, especially the large amount of grain boundaries created by the prelithiation can greatly accelerate the oxygen loss and voltage fade.
Journal ArticleDOI
Tuning Electrochemical Properties of Li-Rich Layered Oxide Cathodes by Adjusting Co/Ni Ratios and Mechanism Investigation Using in situ X-ray Diffraction and Online Continuous Flow Differential Electrochemical Mass Spectrometry.
Shou-Yu Shen,Yu-Hao Hong,Fuchun Zhu,Zhenming Cao,Yu-Yang Li,Fu-Sheng Ke,Fan Jingjing,Zhou Lili,Li-Na Wu,Peng Dai,MingZhi Cai,Ling Huang,Zhi-You Zhou,Jun-Tao Li,Qi-Hui Wu,Shi-Gang Sun +15 more
TL;DR: The results of OEMS revealed that low Co/Ni ratio lithium-rich layered oxide cathode materials released no lattice oxygen at the first charge process, which will lead to the suppression of the voltage decay upon cycling.
Journal ArticleDOI
Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges
Florian Schipper,Prasant Kumar Nayak,Evan M. Erickson,Susai Francis Amalraj,Onit Srur-Lavi,Tirupathi Rao Penki,Michael Talianker,Judith Grinblat,Hadar Sclar,Ortal Breuer,Christian M. Julien,N. Munichandraiah,Daniela Kovacheva,Mudit Dixit,Dan Thomas Major,Boris Markovsky,Doron Aurbach +16 more
TL;DR: In this article, a review of cathode materials and their applications in the development of future electric vehicles is presented, which highlights recent achievements to enhance capacity stability, voltage stability, and rate capability.
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.