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| DOI | 10.1126/science.aax3520 |
| Kinetic pathways of ionic transport in fast-charging lithium titanate | |
| Zhang W.; Seo D.-H.; Chen T.; Wu L.; Topsakal M.; Zhu Y.; Lu D.; Ceder G.; Wang F. | |
| 发表日期 | 2020 |
| ISSN | 0036-8075 |
| 起始页码 | 1030 |
| 结束页码 | 1034 |
| 卷号 | 367期号:6481 |
| 英文摘要 | Fast-charging batteries typically use electrodes capable of accommodating lithium continuously by means of solid-solution transformation because they have few kinetic barriers apart from ionic diffusion. One exception is lithium titanate (Li4Ti5O12), an anode exhibiting extraordinary rate capability apparently inconsistent with its two-phase reaction and slow Li diffusion in both phases. Through real-time tracking of Li+ migration using operando electron energy-loss spectroscopy, we reveal that facile transport in Li4+xTi5O12 is enabled by kinetic pathways comprising distorted Li polyhedra in metastable intermediates along two-phase boundaries. Our work demonstrates that high-rate capability may be enabled by accessing the energy landscape above the ground state, which may have fundamentally different kinetic mechanisms from the ground-state macroscopic phases. This insight should present new opportunities in searching for high-rate electrode materials. © 2020 American Association for the Advancement of Science. All rights reserved. |
| 关键词 | 1 butyl 1 methylpyrrolidinium bis(trifluoromethylsulfonyl) imideelectrolyteimideionic liquid electrolytelithiumlithium bis (trifluoromethanesulfonyl)imidelithium ionlithium titanateoxygenunclassified drugdiffusionelectrodeionic compositionlithiumreaction kineticstitanatetransformationtwo phase flowArticlechemical bondchemical reaction kineticsconcentration (parameter)cyclic voltammetryelectricityelectrochemical analysiselectron energy loss spectroscopyenergyion transportkineticsneutron diffractionnuclear magnetic resonance spectroscopypriority journalquantitative analysisreduction (chemistry)transmission electron microscopyX ray absorption spectroscopy |
| 语种 | 英语 |
| 来源机构 | Science |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133671 |
| 推荐引用方式 GB/T 7714 | Zhang W.,Seo D.-H.,Chen T.,et al. Kinetic pathways of ionic transport in fast-charging lithium titanate[J]. Science,2020,367(6481). |
| APA | Zhang W..,Seo D.-H..,Chen T..,Wu L..,Topsakal M..,...&Wang F..(2020).Kinetic pathways of ionic transport in fast-charging lithium titanate.,367(6481). |
| MLA | Zhang W.,et al."Kinetic pathways of ionic transport in fast-charging lithium titanate".367.6481(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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