The integration of silicon (Si) anode into lithium-ion batteries (LIBs) holds great promise for energy storage, but challenges arise from unstable electrochemical reactions and volume changes during cycling. This study investigates the influence of reduced graphene oxide (rGO) size on the performance of rGO-protected Si composite (Si@rGO) anodes. Two sizes of graphene oxide (GO(L) and GO(S)) are used to synthesize Si@rGO composites with a core-shell structure by spray drying and thermal reduction. Electrochemical evaluations show the advantages of Si@rGO(S) anode with improved cycle life and cycling efficiency over Si@rGO(L) and pure Si. The Si@rGO(S) anode facilitates the formation of a stable LiF-rich solid electrolyte interface (SEI) after cycling, ensuring enhanced capacity retention and swelling control. Rate capability tests also demonstrate the superior high-power performance of Si@rGO(S) with low and stable resistances in Si@rGO(S) over extended cycles. This study provides critical insights into the tailoring of graphene-protected Si composites, highlighting the critical role of rGO size in shaping structural and electrochemical properties. The Si material wrapped by graphene with an optimal lateral size of graphene emerges as a promising candidate for high-performance LIB anodes, thereby advancing electrochemical energy storage technologies.
The spotlight of Taiwanese enterprises seeking Vietnamese talent in semiconductor technology shines particularly bright on the collaboration with National Yang Ming Chiao Tung University (NYCU). In this strategic partnership, NYCU plays a pivotal role in training and providing skilled manpower. The program, organized jointly by NYCU and Taiwanese industry institutions, showcases the university's commitment to fostering talent for the semiconductor sector. This initiative not only benefits Taiwanese companies in need of skilled professionals but also presents promising opportunities for Vietnamese students to excel in this dynamic field through NYCU's specialized programs.
Having students who become both learners and friends is a priceless gift. They teach me as much as I teach them, fostering a bond built on trust, support, and growth. Grateful for their presence, enriching our educational journey with warmth and camaraderie.
