Mapping of lithium ion concentrations in 3D structures through development of in situ correlative imaging of X-ray Compton scattering-computed tomography

DOI: 10.1107/S1600577524003382

Authors: Chu Lun Alex Leung (University College London; Research Complex at Harwell) , Matthew D. Wilson (STFC-UKRI) , Thomas Connolley (Diamond Light Source) , Chun Huang (Imperial College London; The Faraday Institution; Research Complex at Harwell)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation , VOL 31

State: Published (Approved)
Published: July 2024
Diamond Proposal Number(s): 29851 , 23400

Abstract: Understanding the correlation between chemical and microstructural properties is critical for unraveling the fundamental relationship between materials chemistry and physical structures that can benefit materials science and engineering. Here, we demonstrate novel in situ correlative imaging of the X-ray Compton scattering computed tomography (XCS-CT) technique for studying this fundamental relationship. XCS-CT can image light elements that do not usually exhibit strong signals using other X-ray characterization techniques. This paper describes the XCS-CT setup and data analysis method for calculating the valence electron momentum density and lithium-ion concentration, and provides two examples of spatially and temporally resolved chemical properties inside batteries in 3D. XCS-CT was applied to study two types of rechargeable lithium batteries in standard coin cell casings: (1) a lithium-ion battery containing a cathode of bespoke microstructure and liquid electrolyte, and (2) a solid-state battery containing a solid-polymer electrolyte. The XCS-CT technique is beneficial to a wide variety of materials and systems to map chemical composition changes in 3D structures.

Journal Keywords: X-ray Compton scattering computed tomography; XCS-CT; microstructures; ion concentrations; ion transport; tomography.

Diamond Keywords: Batteries; Lithium-ion

Subject Areas: Technique Development, Materials, Chemistry


Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Added On: 08/06/2024 10:39

Documents:
Journal of Synchrotron Radiation - 2024 - Leung - Mapping of lithium ion concentrations in 3D structures through.pdf

Discipline Tags:

Energy Storage Energy Technique Development - Materials Science Physical Chemistry Energy Materials Chemistry Materials Science

Technical Tags:

Imaging Tomography