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Thermally Induced Gelation-Derived SiO(x)/C Anodes Modified With Graphene Oxide for Lithium-Ion Batteries #MMPMID41391182
Park S; Anushkkaran P; Bae TS; Park JI; Park KW; Lim DH; Jang JS
ChemSusChem 2025[Dec]; ? (?): e202502245 PMID41391182show ga
SiO(x) is a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity; nevertheless, its practical application is hampered by structural instability, poor conductivity, and uncontrolled solid electrolyte interface (SEI) growth. This study presents a systematic investigation of graphene oxide (GO) as a multifunctional additive integrated onto SiO(x)/C anodes for LIBs, where the SiO(x)/C was synthesized via a thermally induced sol-gel strategy to enhance uniformity and fabrication efficiency. GO loading facilitated the stabilization of the SEI layer, enhancing cycling stability while mitigating continuous electrolyte decomposition. The oxygen-containing functional groups in GO also helped with pseudocapacitive charge storage, which increased the overall capacity. Furthermore, GO acted as a structural binder, preventing SiO(x)/C particle aggregation and preserving electrode integrity during prolonged cycling. The resulting 15% GO-SiO(x)/C anode unveiled a high reversible capacity of 583.8 mAh g(-1) after 500 cycles at 0.5 A g(-1) and a sturdy cycle life of 498.3 mAh g(-1) after 350 cycles at 1 A g(-1). Post-cycling investigations verified the structural integrity of the GO-loaded electrode, underscoring the effectiveness of GO in mitigating volume expansion and fostering stable SEI generation.
ChemSusChem 2025 ; ? (?): e202502245
