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New Collaborative Paper between PHI China and USTC: Improving Transport in Lithium-Ion Batteries

In a new collaborative paper “Superior Fast-Charging Lithium-Ion Batteries Enabled by the High-Speed Solid-State Lithium Transport of an Intermetallic Cu6Sn5 Network” between scientists at the University of Science and Technology of China and PHI China Analytical Laboratory, XPS is used to map the spatial distribution of Li in the of solid-state lithium channels in the Cu@CuSn NW network.

The cross-section of the graphite electrode was prepared by ion milling and transferred from the glove box to the PHI VersaProbe spectrometer by a transfer vessel without exposure to air.

The X-ray-induced secondary-electron images (SXI) clearly show the cross-sectional structure of the lithiated electrodes, which was used for navigation to locate the cross-section for chemical state mapping.

Three zones from the top surface to the current collector were selected for mapping to obtain a detailed analysis of Li distribution. Metallic Li0 (54.66 eV) is seen to be much more homogeneously distributed along the constructed Cu@CuSn NW network versus traditional graphite anode.

The success of this project is a result of unique capabilities available on PHI XPS instrument – scanning X-ray microprobe source allowing 100% certainty in the area of analysis definition for high-resolution mapping and transfer vessel enabling air-free transfer after sample preparation.

Read more about this paper.

Join us at AVS to learn more from Staff Scientists Sarah Zaccarine who is giving a talk on Wednesday, Nov. 9, 9:20 AM, “XPS Analysis of Battery Materials”.

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© 2022 Physical Electronics, Inc. (PHI) All Rights Reserved.