The peak force of the system with aluminum has dropped by 66 % in comparison to the system without aluminum as shown in Figure . This reduction suggests that the presence of aluminum mitigates the rigidity of the GB, enabling sliding, contributing to effective stress relief, and, ultimately, the prevention of mechanical failure; (c) In contrast to sliding without aluminum, the frequency of sliding is notably higher. Sliding occurred at a relative displacement of 3.634 Å, compared to a relative displacement of 9.279 Å in the absence of aluminum, as depicted in Figure . This increased sliding frequency plays a crucial role in averting the accumulation of excessive stress in the material and (d) Following each sliding event, the GB rapidly returned to its completely undeformed state. This observation indicates substantial stress alleviation due to the presence of aluminum. These findings collectively validate our hypothesis that aluminum facilitates GB sliding, thereby reducing the likelihood of mechanical failure within the material. The observed outcomes are contingent on the aluminum content per grain boundary (GB). However, the influence of the number of aluminum atoms at the GB on the sliding behavior exhibits a nuanced pattern, graphically represented in Figure . The introduction of one aluminum per GB yields a substantial 49% reduction in the sliding barrier. The introduction of second and third aluminum per GB further decreases the barrier by 18% and 21% respectively. However, when the aluminum content increases from 3 to 4 atoms per GB, the sliding barrier is more or less stable, and diminishes with a mere decrease of 0.3%. This suggests that beyond a certain threshold, additional aluminum content has only a minor impact on GB sliding. Another crucial factor to consider is the concurrent increase in interface energy with rising aluminum content. This counters the reduction in the sliding barrier attributed to aluminum's presence by making the initial interface formation more challenging. Therefore, selecting the optimal aluminum content in the silicon anode entails a delicate balance between reducing the sliding barrier and managing the associated increase in interface energy.