Fabrication of tin-cobalt/carbon composite electrodes by electrodeposition using cationic surfactant for lithium-ion batteries

SnCo@C@Mn3O4 Yolk–Shell Hierarchical Hybrid Nanocubes with Exceptional Lithium Storage Performance

“…In Figure a–c, the carbon intermediate layer constitutes the basic skeleton of the cubic nanostructure. Multiple discrete SnCo alloy nanoparticles are encapsulated therein, and Mn 3 O 4 nanoparticles are closely coated on the carbon layer, which leads to the generation of a unique multiple yolk–shell hierarchical hybrid cubic nanostructure. − Notably, Mn 3 O 4 nanoparticles together with SnCo alloy nanoparticles have a synergistic effect on the structure and performance of composite nanomaterials, which can balance the internal and external stresses for the intermediate carbon layer during the process of lithiation, thus preserving the structural stability of SnCoCMnYNCs. Moreover, the small particle size of the Mn 3 O 4 and SnCo nanoparticles can offer enough active sites for e – /Li + ad-/desorption and accelerate their transfer. , In the electron diffraction (ED) of a single nanocube (Figure d), the clear diffraction rings show the good crystalline nature of the sample.…”