Effect of Graphite Morphology on the Electrochemical and Mechanical Properties of SiOx/Graphite Composite Anode

Mixing SiOx materials with graphite has become a key technology to improve their performance, but it is still unclear what kind of help construct stable electrode structure. The purpose this study explore the effect morphology on structure and performance SiOx/C composite electrodes (850 mAh g−1). For SiOx/C59 constructed by lamellar (C59) big aspect ratio particles, particles agglomerate in pores C59 particles. This uneven could lead excessive stress strain during cycling, which causes anode failure cycling deterioration. While small-size (SFG15) random orientation helps uniform particle distribution pore structure, reduce change cycling. Thus, (SiOx/SFG15) exhibits better compared electrode. work reveals structure-activity relationship morphology, mechanical electrochemical electrode, provides guide design development high capacity