Influence of conversion material morphology on electrochemistry studied with operando X-ray tomography and diffraction.

Villevieille, Claire; Ebner, Martin; Gómez-Cámer, Juan Luis; Marone, Federica; Novák, Petr; Wood, Vanessa · Adv Mater · 2015

basic_science · Level V

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Abstract

X-ray diffraction and X-ray tomography are performed on intermetallic particles undergoing lithiation in a porous electrode. Differences between ensemble phase evolution and that at a single-particle level are explored. It is found that all particles evidence core-shell lithiation; however, particles with internal porosity are more mechanically robust and exhibit less fracture.