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The Application of Electron Backscatter Diffraction for Investigating Intra-Particle Grain Architectures and Boundaries in Lithium Ion Electrodes

45 Pages Posted: 20 Apr 2020 Sneak Peek Status: Review Complete

See all articles by Alexander Quinn

Alexander Quinn

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

Helio Moutinho

National Renewable Energy Laboratory

Francois Usseglio-Viretta

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

Ankit Verma

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

Kandler Smith

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

Matthew Keyser

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

Donal Finegan

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

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Abstract

The performance and degradation of layered cathode materials for lithium-ion batteries are largely governed by their morphological and crystallographic properties. A comprehensive tool to spatially characterize grain architectures in electrode particles is needed to understand solid-state lithium transport and the efficacy of particles to avoid lithiation heterogeneities and strain-induced degradation. Here, we apply electron backscatter diffraction on LiNi0.5Mn0.3Co0.2O2 particle cross-sections to spatially describe intra-particle grain architectures. A method for segmenting, labelling, and quantifying morphological properties of distinct grains is developed and applied. Crystallographic orientations are measured for each grain and the spatial distribution of grain orientations is quantified with a specific focus on describing the plane along which lithium transports, accounting for inter-grain lithiation barriers and for favorable inward lithiation of the particle. The extension from 2D to 3D descriptions of grain morphologies and orientations to predict lithiation inefficiencies is discussed, as well as a method to quantify the ideality of grain architectures for high-rate and efficient operation.

Keywords: electron backscatter diffraction, lithium ion cathode, particle heterogeneities, grain boundaries, grain orientation

Suggested Citation

Quinn, Alexander and Moutinho, Helio and Usseglio-Viretta, Francois and Verma, Ankit and Smith, Kandler and Keyser, Matthew and Finegan, Donal, The Application of Electron Backscatter Diffraction for Investigating Intra-Particle Grain Architectures and Boundaries in Lithium Ion Electrodes. Available at SSRN: https://ssrn.com/abstract=3569558 or http://dx.doi.org/10.2139/ssrn.3569558
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Alexander Quinn

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

United States

Helio Moutinho

National Renewable Energy Laboratory ( email )

1617 Cole Blvd.
Golden, CO 80401-3393
United States

Francois Usseglio-Viretta

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences ( email )

United States

Ankit Verma

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences

United States

Kandler Smith

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences ( email )

United States

Matthew Keyser

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences ( email )

United States

Donal Finegan (Contact Author)

National Renewable Energy Laboratory - Center for Integrated Mobility Sciences ( email )

United States

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