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A silicon suboxide-carbon (SiO  x  /C, 1 ≤ x ≤ 2) composite anode of lithium-ion batteries (LIBs) with enhanced performance is prepared using an aqueous multicomponent binder technology. Considering the adhesive force, electrolyte absorption, and stability, different binders including sodium alginate (SA), polyacrylamide gel (PAM), polytetrafluoroethylene (PTFE), and their composites are evaluated. It is indicated that compared to other anodes with single- or multicomponent binders, the SiO  x  /C composite anode with PAM/SA/PTFE663 (PSAP663) binders exhibits strong adhesion, moderate electrolyte absorption ability, and a specific capacity of 427 mA h g -1 charge-discharged at 0.5 A g -1 after 300 cycles. The improvement of electrochemical performance is attributed to the comprehensive effects of composite binders, including the adhesion of active substances, surface protection, solution adsorption, conductive path, and so on. These results show that the PSAP663 binder has promising potential for application, which not only gives alternative practical schemes of the green binders for the SiO  x  /C anodes but also provides ideas to develop a high-performance adhesive technology for LIBs.

SiOx/C Composite Anode of Lithium-Ion Batteries with Enhanced Performances Using Multicomponent Binders

SiO_x/C Composite Anode of Lithium-Ion Batteries with Enhanced Performances Using Multicomponent Binders