Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes

Andre Adam; Chanho Kim; Yuanshun Li; Yuxuan Zhang; Jean-Christophe Bilheux; Xianglin Li; Lei Cheng; Hassina Bilheux; Guang Yang

doi:10.1039/D6MH00464D

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Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes†

Andre Adam,

‡^ab Chanho Kim,‡^a Yuanshun Li,

^ac Yuxuan Zhang,^d Jean-Christophe Bilheux,^d Xianglin Li,

^be Lei Cheng,^a Hassina Bilheux

^d and Guang Yang

*^af

Author affiliations

* Corresponding authors

^a Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, USA
E-mail: yangg@ornl.gov

^b Department of Mechanical Engineering, The University of Kansas, Lawrence, USA

^c Department of Chemical and Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, USA

^d Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, USA

^e McKelvey School of Engineering, Washington University in St. Louis, St. Louis, USA

^f Bredesen Center for Interdisciplinary Research and Education, University of Tennessee Knoxville, Knoxville, USA

Abstract

Tortuosity-weighted interfacial flux for lithium (TWIF-Li) predicts through-thickness Li gradients in thick composite all-solid-state cathodes without fitted parameters. Image-derived microstructures, GITT-derived concentration-dependent solid diffusion, and tortuosity-weighted interfacial kinetics reproduce operando neutron radiography across practical rates, delivering transferable design rules to suppress transport-limited reaction fronts.

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Article information

DOI: https://doi.org/10.1039/D6MH00464D
Article type: Communication
Submitted: 11 Mar 2026
Accepted: 06 May 2026
First published: 14 May 2026
This article is Open Access

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Mater. Horiz., 2026, Advance Article

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Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes

A. Adam, C. Kim, Y. Li, Y. Zhang, J. Bilheux, X. Li, L. Cheng, H. Bilheux and G. Yang, Mater. Horiz., 2026, Advance Article , DOI: 10.1039/D6MH00464D

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Materials Horizons

Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes†

Abstract

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Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes

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