Abstract：Surface effect plays a predominant role in nano-electrode particles. At first, a fully coupled reaction-diffusion-mechanics model with surface effect is developed during charge or discharge of LIBS. Then the comparisons of lithium ion concentration, radial stress and hoop stress are made between with and without surface effect. Finally, the influences of reaction coefficient and size effect on the concentration and diffusion-induced stress are discussed. The numerical results show that the surface effect has a vital influence on the stress distribution, and slower chemical reaction or smaller size of nano-electrode particles can decrease the stress of the electrode.
2023, Vol. 44 
