Tortuosity Anisotropy in Lithium‐Ion Battery Electrodes

Abstract

A systematic experimental study of lithium-ion battery porous electrode microstructures using synchrotron X-ray tomographic microscopy finds particle shape and fabrication-induced alignment to cause tortuosity anisotropy, which can impact battery performance. Tortuosity anisotropy is demonstrated to be easily predicted based on simple electron microscopy assessment of particle shapes and the differential effective medium approximation.