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Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling

Phase transitions in Li-ion electrode materials during (dis)charge are decisive for battery performance, limiting high-rate capabilities and playing a crucial role in the cycle life of Li-ion batteries. However, the difficulty to probe the phase nucleation and growth in individual grains is hinderin...

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Autores principales: Zhang, Xiaoyu, van Hulzen, Martijn, Singh, Deepak P., Brownrigg, Alex, Wright, Jonathan P., van Dijk, Niels H., Wagemaker, Marnix
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4597332/
https://www.ncbi.nlm.nih.gov/pubmed/26395323
http://dx.doi.org/10.1038/ncomms9333
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author Zhang, Xiaoyu
van Hulzen, Martijn
Singh, Deepak P.
Brownrigg, Alex
Wright, Jonathan P.
van Dijk, Niels H.
Wagemaker, Marnix
author_facet Zhang, Xiaoyu
van Hulzen, Martijn
Singh, Deepak P.
Brownrigg, Alex
Wright, Jonathan P.
van Dijk, Niels H.
Wagemaker, Marnix
author_sort Zhang, Xiaoyu
collection PubMed
description Phase transitions in Li-ion electrode materials during (dis)charge are decisive for battery performance, limiting high-rate capabilities and playing a crucial role in the cycle life of Li-ion batteries. However, the difficulty to probe the phase nucleation and growth in individual grains is hindering fundamental understanding and progress. Here we use synchrotron microbeam diffraction to disclose the cycling rate-dependent phase transition mechanism within individual particles of LiFePO(4), a key Li-ion electrode material. At low (dis)charge rates well-defined nanometer thin plate-shaped domains co-exist and transform much slower and concurrent as compared with the commonly assumed mosaic transformation mechanism. As the (dis)charge rate increases phase boundaries become diffuse speeding up the transformation rates of individual grains. Direct observation of the transformation of individual grains reveals that local current densities significantly differ from what has previously been assumed, giving new insights in the working of Li-ion battery electrodes and their potential improvements.
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spelling pubmed-45973322015-12-10 Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling Zhang, Xiaoyu van Hulzen, Martijn Singh, Deepak P. Brownrigg, Alex Wright, Jonathan P. van Dijk, Niels H. Wagemaker, Marnix Nat Commun Article Phase transitions in Li-ion electrode materials during (dis)charge are decisive for battery performance, limiting high-rate capabilities and playing a crucial role in the cycle life of Li-ion batteries. However, the difficulty to probe the phase nucleation and growth in individual grains is hindering fundamental understanding and progress. Here we use synchrotron microbeam diffraction to disclose the cycling rate-dependent phase transition mechanism within individual particles of LiFePO(4), a key Li-ion electrode material. At low (dis)charge rates well-defined nanometer thin plate-shaped domains co-exist and transform much slower and concurrent as compared with the commonly assumed mosaic transformation mechanism. As the (dis)charge rate increases phase boundaries become diffuse speeding up the transformation rates of individual grains. Direct observation of the transformation of individual grains reveals that local current densities significantly differ from what has previously been assumed, giving new insights in the working of Li-ion battery electrodes and their potential improvements. Nature Pub. Group 2015-09-23 /pmc/articles/PMC4597332/ /pubmed/26395323 http://dx.doi.org/10.1038/ncomms9333 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhang, Xiaoyu
van Hulzen, Martijn
Singh, Deepak P.
Brownrigg, Alex
Wright, Jonathan P.
van Dijk, Niels H.
Wagemaker, Marnix
Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title_full Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title_fullStr Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title_full_unstemmed Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title_short Direct view on the phase evolution in individual LiFePO(4) nanoparticles during Li-ion battery cycling
title_sort direct view on the phase evolution in individual lifepo(4) nanoparticles during li-ion battery cycling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4597332/
https://www.ncbi.nlm.nih.gov/pubmed/26395323
http://dx.doi.org/10.1038/ncomms9333
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