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DOE OSTI · 3682471

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

Adam, Andre [ORNL] (ORCID:0000000245023033)·Kim, Chanho [ORNL] (ORCID:0009000888661407)·Li, Yuanshun [ORNL]·Zhang, Yuxuan [ORNL] (ORCID:0000000200831408)·Bilheux, Jean-Christophe [ORNL] (ORCID:0000000321726487)·Li, Xianglin [Washington University in St. Louis] (ORCID:0000000341103287)·Cheng, Lei [ORNL] (ORCID:0000000239021680)·Bilheux, Hassina [ORNL] (ORCID:0000000185742449)·Yang, Guang [ORNL] (ORCID:0000000305836272)
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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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Adam, Andre [ORNL] (ORCID:0000000245023033), Kim, Chanho [ORNL] (ORCID:0009000888661407), Li, Yuanshun [ORNL], Zhang, Yuxuan [ORNL] (ORCID:0000000200831408), Bilheux, Jean-Christophe [ORNL] (ORCID:0000000321726487), Li, Xianglin [Washington University in St. Louis] (ORCID:0000000341103287), Cheng, Lei [ORNL] (ORCID:0000000239021680), Bilheux, Hassina [ORNL] (ORCID:0000000185742449), Yang, Guang [ORNL] (ORCID:0000000305836272). 2026-05-01. Operando neutron radiography validates a parameter-free transport–kinetics model for thick solid-state battery cathodes. https://doi.org/10.1039/d6mh00464d

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