Stochasticity at Scales Leads to Lithium Intercalation Cascade.
ACS applied materials & interfaces(2020)
摘要
Porous intercalation electrodes are synonymous with the promise of lithium-ion batteries toward electromobility. These electrodes exhibit stochastic geometrical features spanning different length-scales. The implication of microstructural inhomogeneity on the lithium intercalation dynamics is hitherto unknown. Starting from 3D, x-ray tomograms of intercalation electrode microstructures, we characterize the microstructural variability in porous intercalation electrodes. Furthermore, a physics-based analysis of electrochemical response reveals that the stochastic features can cause preferential lithiation fronts.
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关键词
porous electrode,inhomogeneity,anisotropy,scales of material arrangement,secondary solids,intercalation dynamics
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