Two-dimensional lithium diffusion behavior and probable hybrid phase transformation kinetics in olivine lithium iron phosphate

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dc.citation.articleNumber1194en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber8en_US
dc.contributor.authorHong, Liangen_US
dc.contributor.authorLi, Linsenen_US
dc.contributor.authorChen-Wiegart, Yuchen-Karenen_US
dc.contributor.authorWang, Jiajunen_US
dc.contributor.authorXiang, Kaien_US
dc.contributor.authorGan, Liyangen_US
dc.contributor.authorLi, Wenjieen_US
dc.contributor.authorMeng, Feien_US
dc.contributor.authorWang, Fanen_US
dc.contributor.authorWang, Junen_US
dc.contributor.authorChiang, Yet-Mingen_US
dc.contributor.authorJin, Songen_US
dc.contributor.authorTang, Mingen_US
dc.date.accessioned2017-12-21T18:21:53Zen_US
dc.date.available2017-12-21T18:21:53Zen_US
dc.date.issued2017en_US
dc.description.abstractOlivine lithium iron phosphate is a technologically important electrode material for lithium-ion batteries and a model system for studying electrochemically driven phase transformations. Despite extensive studies, many aspects of the phase transformation and lithium transport in this material are still not well understood. Here we combine operando hard X-ray spectroscopic imaging and phase-field modeling to elucidate the delithiation dynamics of single-crystal lithium iron phosphate microrods with long-axis along the [010] direction. Lithium diffusivity is found to be two-dimensional in microsized particles containing ~3% lithium-iron anti-site defects. Our study provides direct evidence for the previously predicted surface reaction-limited phase-boundary migration mechanism and the potential operation of a hybrid mode of phase growth, in which phase-boundary movement is controlled by surface reaction or lithium diffusion in different crystallographic directions. These findings uncover the rich phase-transformation behaviors in lithium iron phosphate and intercalation compounds in general and can help guide the design of better electrodes.en_US
dc.identifier.citationHong, Liang, Li, Linsen, Chen-Wiegart, Yuchen-Karen, et al.. "Two-dimensional lithium diffusion behavior and probable hybrid phase transformation kinetics in olivine lithium iron phosphate." <i>Nature Communications,</i> 8, (2017) Springer Nature: https://doi.org/10.1038/s41467-017-01315-8.en_US
dc.identifier.digitalTwo-dimensional-lithiumen_US
dc.identifier.doihttps://doi.org/10.1038/s41467-017-01315-8en_US
dc.identifier.urihttps://hdl.handle.net/1911/98919en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleTwo-dimensional lithium diffusion behavior and probable hybrid phase transformation kinetics in olivine lithium iron phosphateen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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