JOM

, Volume 69, Issue 9, pp 1478–1483 | Cite as

Elemental and Chemical Mapping of High Capacity Intermetallic Li-ion Anodes with Transmission X-ray Microscopy

  • Logan J. Ausderau
  • Hernando J. Gonzalez Malabet
  • Joseph R. Buckley
  • Vincent De Andrade
  • Yijin Liu
  • George J. Nelson
Article

Abstract

X-ray nanotomography has been applied toward the three-dimensional (3D) imaging of a Li-ion battery alloy anode material (Cu6Sn5), and subsequent segmentation and analysis has been performed to distinguish the alloy material from its constituent components. Follow-on x-ray absorption near edge structure imaging was performed yielding absorption spectra for Cu, Cu6Sn5, and Li2CuSn. Analyses based on these spectra were performed on two-dimensional (2D) images of samples from cycled electrodes to assess chemical composition in Cu-containing phases. The capability to distinguish the different materials within mixed samples suggests that microstructure and composition changes resulting from lithiation and delithiation in Cu6Sn5 may be observed and better understood with 3D x-ray imaging methods. These methods are expected to be applicable to other intermetallic tin alloy electrodes.

Supplementary material

11837_2017_2416_MOESM1_ESM.docx (5.7 mb)
Supplementary material 1 (DOCX 5801 kb)

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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  • Logan J. Ausderau
    • 1
  • Hernando J. Gonzalez Malabet
    • 1
  • Joseph R. Buckley
    • 1
  • Vincent De Andrade
    • 2
  • Yijin Liu
    • 3
  • George J. Nelson
    • 1
  1. 1.Department of Mechanical and Aerospace EngineeringUniversity of Alabama in HuntsvilleHuntsvilleUSA
  2. 2.Advanced Photon SourceArgonne National LaboratoryLemontUSA
  3. 3.Stanford Synchrotron Radiation LightsourceSLAC National Accelerator FacilityMenlo ParkUSA

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