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Bo-Han Zhang,Yu-Qian Wang,Fen Gao,Hua-Ying Wang,Wan-Xin Wen,Yun-Lei Hou,Jing-Zhou Chen,Dong-Lin Zhao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Transition metal sulfides (TMS) have emerged as promising anode materials for lithium and sodium ionbatteries due to their high theoretical capacity and low cost. However, the severe volume expansion duringthe conversion reaction causes rapid collapse inevitability when used as anode material. Herein, wepertinently fabricated nanoscale Ni3S4/Co3S4 with uniform particle size homogeneously dispersedbetween pleated graphene (Ni3S4/Co3S4@rGO) through facile hydrothermal assisted by cationic surfactants. The construction of 3D nanocomposites significantly shortens ion migration distances and enricheselectronic pathways, accelerating charge transfer kinetics while maintaining good stability. Uniformlydistributed bimetallic sulfides and rGO limit each other’s aggregation, allowing the excellent structuralproperties of the material to be maintained over time. Thus, the Ni3S4-Co3S4@rGO electrodes deliver ahigh reversible capacity of 972.5 mAh/g upon 200 cycles at 100 mA g1 in Lithium-ion battery and487.5 mAh/g upon 150 cycles at 100 mA g1 in Sodium-ion battery, as well as excellent rate capacityin both. These excellent properties show the potential for expansion of this simple synthetic methodin the field of alkali metal batteries.