Rate-induced solubility and suppression of the first-order phase transition in olivine LiFePO4

Xiaoyu Zhang; Martijn van Hulzen; Deepak P. Singh; Alex Brownrigg; Jonathan P. Wright; Niels H. van Dijk; Marnix Wagemaker

doi:10.1021/nl404285y

Rate-induced solubility and suppression of the first-order phase transition in olivine LiFePO4

Xiaoyu Zhang, Martijn van Hulzen, Deepak P. Singh, Alex Brownrigg, Jonathan P. Wright, Niels H. van Dijk, Marnix Wagemaker

Research output: Contribution to journal › Article › Academic › peer-review

137 Citations (Scopus)

Abstract

The impact of ultrahigh (dis)charge rates on the phase transition mechanism in LiFePO4 Li-ion electrodes is revealed by in situ synchrotron diffraction. At high rates the solubility limits in both phases increase dramatically, causing a fraction of the electrode to bypass the first-order phase transition. The small transforming fraction demonstrates that nucleation rates are consequently not limiting the transformation rate. In combination with the small fraction of the electrode that transforms at high rates, this indicates that higher performances may be achieved by further optimizing the ionic/electronic transport in LiFePO4 electrodes.

Original language	English
Pages (from-to)	2279-2285
Number of pages	7
Journal	Nano letters
Volume	14
Issue number	5
DOIs	https://doi.org/10.1021/nl404285y
Publication status	Published - 2014
Externally published	Yes

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10.1021/nl404285y

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title = "Rate-induced solubility and suppression of the first-order phase transition in olivine LiFePO4",

abstract = "The impact of ultrahigh (dis)charge rates on the phase transition mechanism in LiFePO4 Li-ion electrodes is revealed by in situ synchrotron diffraction. At high rates the solubility limits in both phases increase dramatically, causing a fraction of the electrode to bypass the first-order phase transition. The small transforming fraction demonstrates that nucleation rates are consequently not limiting the transformation rate. In combination with the small fraction of the electrode that transforms at high rates, this indicates that higher performances may be achieved by further optimizing the ionic/electronic transport in LiFePO4 electrodes.",

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AU - Zhang, Xiaoyu

AU - van Hulzen, Martijn

AU - Singh, Deepak P.

AU - Brownrigg, Alex

AU - Wright, Jonathan P.

AU - van Dijk, Niels H.

AU - Wagemaker, Marnix

PY - 2014

Y1 - 2014

N2 - The impact of ultrahigh (dis)charge rates on the phase transition mechanism in LiFePO4 Li-ion electrodes is revealed by in situ synchrotron diffraction. At high rates the solubility limits in both phases increase dramatically, causing a fraction of the electrode to bypass the first-order phase transition. The small transforming fraction demonstrates that nucleation rates are consequently not limiting the transformation rate. In combination with the small fraction of the electrode that transforms at high rates, this indicates that higher performances may be achieved by further optimizing the ionic/electronic transport in LiFePO4 electrodes.

AB - The impact of ultrahigh (dis)charge rates on the phase transition mechanism in LiFePO4 Li-ion electrodes is revealed by in situ synchrotron diffraction. At high rates the solubility limits in both phases increase dramatically, causing a fraction of the electrode to bypass the first-order phase transition. The small transforming fraction demonstrates that nucleation rates are consequently not limiting the transformation rate. In combination with the small fraction of the electrode that transforms at high rates, this indicates that higher performances may be achieved by further optimizing the ionic/electronic transport in LiFePO4 electrodes.

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JO - Nano letters

JF - Nano letters

IS - 5

ER -

Rate-induced solubility and suppression of the first-order phase transition in olivine LiFePO4

Abstract

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