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In operando tracking phase transformation evolution of lithium iron phosphate with hard X-ray microscopy

Author

Listed:
  • Jiajun Wang

    (Photon Sciences Directorate, Brookhaven National Laboratory)

  • Yu-chen Karen Chen-Wiegart

    (Photon Sciences Directorate, Brookhaven National Laboratory)

  • Jun Wang

    (Photon Sciences Directorate, Brookhaven National Laboratory)

Abstract

The delithiation reaction in lithium ion batteries is often accompanied by an electrochemically driven phase transformation process. Tracking the phase transformation process at nanoscale resolution during battery operation provides invaluable information for tailoring the kinetic barrier to optimize the physical and electrochemical properties of battery materials. Here, using hard X-ray microscopy—which offers nanoscale resolution and deep penetration of the material, and takes advantage of the elemental and chemical sensitivity—we develop an in operando approach to track the dynamic phase transformation process in olivine-type lithium iron phosphate at two size scales: a multiple-particle scale to reveal a rate-dependent intercalation pathway through the entire electrode and a single-particle scale to disclose the intraparticle two-phase coexistence mechanism. These findings uncover the underlying two-phase mechanism on the intraparticle scale and the inhomogeneous charge distribution on the multiple-particle scale. This in operando approach opens up unique opportunities for advancing high-performance energy materials.

Suggested Citation

  • Jiajun Wang & Yu-chen Karen Chen-Wiegart & Jun Wang, 2014. "In operando tracking phase transformation evolution of lithium iron phosphate with hard X-ray microscopy," Nature Communications, Nature, vol. 5(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5570
    DOI: 10.1038/ncomms5570
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    Cited by:

    1. Li, Yong & Yang, Jie & Song, Jian, 2015. "Electromagnetic effects model and design of energy systems for lithium batteries with gradient structure in sustainable energy electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 842-851.
    2. Wen Zhu & Yuesheng Wang & Dongqiang Liu & Vincent Gariépy & Catherine Gagnon & Ashok Vijh & Michel L. Trudeau & Karim Zaghib, 2018. "Application of Operando X-ray Diffractometry in Various Aspects of the Investigations of Lithium/Sodium-Ion Batteries," Energies, MDPI, vol. 11(11), pages 1-41, November.
    3. Li, Yong & Yang, Jie & Song, Jian, 2015. "Microscale characterization of coupled degradation mechanism of graded materials in lithium batteries of electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 1445-1461.
    4. Li, Yong & Yang, Jie & Song, Jian, 2016. "Structural model, size effect and nano-energy system design for more sustainable energy of solid state automotive battery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 685-697.
    5. Li, Yong & Yang, Jie & Song, Jian, 2016. "Nano-energy system coupling model and failure characterization of lithium ion battery electrode in electric energy vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1250-1261.
    6. Li, Yong & Yang, Jie & Song, Jian, 2017. "Design principles and energy system scale analysis technologies of new lithium-ion and aluminum-ion batteries for sustainable energy electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 645-651.

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