A Li-ion battery (LIB) anode particle made of graphite is studied to analyze the role of stress concentrations due to voids on the interaction between electrochemistry and mechanics. First, charge-discharge (CD) voltammetry experiment is simulated; following which the particle is first discharged and then charged (DC). These experiments are conducted for various ratios of hole radius to particle radius (r/R) Our results show that for DC case the effects of stresses on the electrochemical response decreases with the increase in (r/R) ratio, while for CD voltammetry the effects may increase or decrease depending on (r/R) ratio and particle size. Specifically, for particle size less than 5μm the effect of stress reduces with increase in (r/R) ratio and for particle sizes between 5 and 25μm the effect of stress may increase or decrease depending on (r/R) ratio. The simulations are used to observe the phenomenon and explain the underlying physics.
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