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DOI | 10.1038/s41467-019-12261-y |
Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes | |
Assat, Gaurav1,2,3; Foix, Dominique2,4; Delacourt, Charles2,5; Iadecola, Antonella2; Dedryvere, Remi2,4; Tarascon, Jean-Marie1,2,3 | |
2019-09-25 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Reversible anionic redox has rejuvenated the search for high-capacity lithium-ion battery cathodes. Real-world success necessitates the holistic mastering of this electrochemistry's kinetics, thermodynamics, and stability. Here we prove oxygen redox reactivity in the archetypical lithium-and manganese-rich layered cathodes through bulk-sensitive synchrotron-based spectroscopies, and elucidate their complete anionic/cationic charge-compensation mechanism. Furthermore, via various electroanalytical methods, we answer how the anionic/cationic interplay governs application-wise important issues-namely sluggish kinetics, large hysteresis, and voltage fade-that afflict these promising cathodes despite widespread industrial and academic efforts. We find that cationic redox is kinetically fast and without hysteresis unlike sluggish anions, which furthermore show different oxidation vs. reduction potentials. Additionally, more time spent with fully oxidized oxygen promotes voltage fade. These fundamental insights about anionic redox are indispensable for improving lithium-rich cathodes. Moreover, our methodology provides guidelines for assessing the merits of existing and future anionic redox-based high-energy cathodes, which are being discovered rapidly. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418566800015 |
WOS关键词 | X-RAY-ABSORPTION ; REVERSIBLE OXYGEN PARTICIPATION ; POSITIVE ELECTRODE MATERIAL ; LAYERED OXIDE CATHODES ; ANIONIC REDOX ; HIGH-CAPACITY ; CHARGE-COMPENSATION ; VOLTAGE FADE ; PHOTOEMISSION-SPECTROSCOPY ; ELECTROCHEMICAL IMPEDANCE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204558 |
专题 | 资源环境科学 |
作者单位 | 1.UMR CNRS 8260, Coll France Chim Solide & Energie, 11 Pl Marcelin Berthelot, F-75005 Paris, France; 2.FR CNRS 3459, RS2E, F-80039 Amiens, France; 3.UPMC Univ Paris 06, Sorbonne Univ, 4 Pl Jussieu, F-75005 Paris, France; 4.Univ Pau & Pays Adour, IPREM UMR 5254 CNRS, Helioparc, 2 Ave Pierre Angot, F-64053 Pau 9, France; 5.Univ Picardie Jules Verne, UMR CNRS 7314, LRCS, 33 Rue St Leu, F-80039 Amiens, France |
推荐引用方式 GB/T 7714 | Assat, Gaurav,Foix, Dominique,Delacourt, Charles,et al. Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Assat, Gaurav,Foix, Dominique,Delacourt, Charles,Iadecola, Antonella,Dedryvere, Remi,&Tarascon, Jean-Marie.(2019).Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes.NATURE COMMUNICATIONS,8. |
MLA | Assat, Gaurav,et al."Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes".NATURE COMMUNICATIONS 8(2019). |
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