Operando Nanomechanical Mapping of Amorphous Silicon Thin Film Electrodes in All-Solid-State Lithium-Ion Battery Configuration during Electrochemical Lithiation and Delithiation.

ABSTRACT: An operando bimodal atomic force microscopy system was constructed to perform nanomechanical mapping of an amorphous Si thin film electrode deposited on a Li_6.6La₃Zr_1.6Ta_0.4O₁₂ solid electrolyte sheet during electrochemical lithiation/delithiation. The evolution of Young's modulus maps of the Si electrode was successfully tracked as a function of apparent Li content x in lithium silicide (Li_xSi) simultaneously with real-time surface topography observation. At the initial stage of lithiation, the average modulus steeply decreased due to the generation of Li_xSi from intrinsic Si, followed by a moderate modulus reduction until the electrode capacity reached 3300 mAh g^-1 (Li cont

SUBMITTER: Putra RP 

PROVIDER: S-EPMC10801689 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature