Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries

Gu, Meng; Shi, Wei; Zheng, Jianming; Yan, Pengfei; Zhang, Ji-guang; Wang, Chongmin

doi:10.1063/1.4921628

Title: Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries

Abstract

LiFePO₄ is a high power rate cathode material for lithium ion battery and shows remarkable capacity retention, featuring a 91% capacity retention after 3300 cycles. In this work, we use high-resolution transmission electron microscopy (HRTEM), energy dispersive x-ray spectroscopy (EDS), and electron energy loss spectroscopy (EELS) to study the gradual capacity fading mechanism of LiFePO₄ materials. We found that upon prolonged electrochemical cycling of the battery, the LiFePO₄ cathode shows surface amorphization and loss of oxygen species, which directly contribute to the gradual capacity fading of the battery. The finding is of great importance for the design and improvement of new LiFePO₄ cathode for high-energy and high-power rechargeable battery for electric transportation.

Authors:

Gu, Meng ^[1]; Shi, Wei ^[2]; Zheng, Jianming ^[3]; Yan, Pengfei ^[1]; Zhang, Ji-guang ^[3]; Wang, Chongmin ^[1]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environmental Directorate; Beijing Jiaotong University (China). School of Electrical Engineering, National Active Distribution Network Technology Research Center
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environmental Directorate

Publication Date:: Mon May 18 00:00:00 EDT 2015

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1208728

Alternate Identifier(s):: OSTI ID: 1226747

Report Number(s):: PNNL-SA-109000
Journal ID: ISSN 0003-6951; APPLAB; 48688

Grant/Contract Number:: AC05-76RL01830

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 106; Journal Issue: 20; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 33 ADVANCED PROPULSION SYSTEMS; Environmental Molecular Sciences Laboratory; Electron energy loss spectroscopy; LiFePO₄

Citation Formats


                    Gu, Meng, Shi, Wei, Zheng, Jianming, Yan, Pengfei, Zhang, Ji-guang, and Wang, Chongmin. Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries.  United States: N. p., 2015. 
Web.  doi:10.1063/1.4921628.

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                    Gu, Meng, Shi, Wei, Zheng, Jianming, Yan, Pengfei, Zhang, Ji-guang, & Wang, Chongmin. Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries.  United States.  https://doi.org/10.1063/1.4921628

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                    Gu, Meng, Shi, Wei, Zheng, Jianming, Yan, Pengfei, Zhang, Ji-guang, and Wang, Chongmin. Mon .  
"Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries".  United States.  https://doi.org/10.1063/1.4921628.  https://www.osti.gov/servlets/purl/1208728.

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@article{osti_1208728,

  title        = {Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries},

  author       = {Gu, Meng and Shi, Wei and Zheng, Jianming and Yan, Pengfei and Zhang, Ji-guang and Wang, Chongmin},

  abstractNote = {LiFePO4 is a high power rate cathode material for lithium ion battery and shows remarkable capacity retention, featuring a 91% capacity retention after 3300 cycles. In this work, we use high-resolution transmission electron microscopy (HRTEM), energy dispersive x-ray spectroscopy (EDS), and electron energy loss spectroscopy (EELS) to study the gradual capacity fading mechanism of LiFePO4 materials. We found that upon prolonged electrochemical cycling of the battery, the LiFePO4 cathode shows surface amorphization and loss of oxygen species, which directly contribute to the gradual capacity fading of the battery. The finding is of great importance for the design and improvement of new LiFePO4 cathode for high-energy and high-power rechargeable battery for electric transportation.},

  doi          = {10.1063/1.4921628},

  journal      = {Applied Physics Letters},

  number       = 20,

  volume       = 106,

  place        = {United States},

  year         = {Mon May 18 00:00:00 EDT 2015},

  month        = {Mon May 18 00:00:00 EDT 2015}

}

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Works referenced in this record:

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Fe valence determination and Li elemental distribution in lithiated FeO0.7F1.3/C nanocomposite battery materials by electron energy loss spectroscopy (EELS)
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Cosandey, F.; Su, D.; Sina, M.
Micron, Vol. 43, Issue 1
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Long-term cyclability of LiFePO4/carbon composite cathode material for lithium-ion battery applications
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Liu, Jing; Wang, Jiawei; Yan, Xuedong
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Electrochemical and Solid-State Letters, Vol. 9, Issue 7
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Nano Letters, Vol. 14, Issue 5
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Kinetics of non-equilibrium lithium incorporation in LiFePO4
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Malik, Rahul; Zhou, Fei; Ceder, G.
Nature Materials, Vol. 10, Issue 8
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Lithium deintercalation in LiFePO4 nanoparticles via a domino-cascade model
journal, July 2008

Delmas, C.; Maccario, M.; Croguennec, L.
Nature Materials, Vol. 7, Issue 8
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Hierarchically Porous Monolithic LiFePO ₄ /Carbon Composite Electrode Materials for High Power Lithium Ion Batteries
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Doherty, Cara M.; Caruso, Rachel A.; Smarsly, Bernd M.
Chemistry of Materials, Vol. 21, Issue 21
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Formation of the Spinel Phase in the Layered Composite Cathode Used in Li-Ion Batteries
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Gu, Meng; Belharouak, Ilias; Zheng, Jianming
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Works referencing / citing this record:

First-Principles Study of the Impact of Grain Boundary Formation in the Cathode Material LiFePO4
journal, September 2019

Kuriplach, Jan; Pulkkinen, Aki; Barbiellini, Bernardo
Condensed Matter, Vol. 4, Issue 3
DOI: 10.3390/condmat4030080

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Title: Probing the failure mechanism of nanoscale LiFePO₄ for Li-ion batteries

Abstract

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