The energy density of Li-ion batteries can be increased if graphitic anodes are replaced with nanostructured Si-based materials. Design of efficient Si anodes requires a better fundamental understanding of the possible changes in Si-Li alloy morphology during cycling. Here we propose a simple elastoplastic model to predict morphological changes in Si upon electrochemical reaction with Li in a c...

In Li-ion batteries the electrochemical potential drives redox reactions occurring at interface between electrolyte and storage material, typically active particles for porous electrodes, allowing Li ions intercalation/extraction from electrodes. The limiting factor of process is not solely related to affinity, but also structural features as morphology this note, relevance electrodes architect...

Intercalation-induced stress and heat generation inside Li-ion battery cathode LiMn2O4 particles under potentiodynamic control are simulated in this paper. We combined analyses of transport and kinetics in determining resulting stresses, which arise from concentration gradients in cathode particles, and heat generation. Two peaks in boundary reaction flux, and resulting stresses, were determine...

Abstract The synthesis and electrochemical insertion of lithium into the Wadsley–Roth NaNb 13 O 33 phase is studied. Lithium intercalation to form Li x reaches a value up x~15, between 3.0 1.0 V vs. + /Li at slow cycling rate, capacity 233 mAh g −1 . Within this voltage window, two sharp peaks one broad peak are observed in differential plots suggesting multiple two‐phase regions. High Li‐ion c...