Design and Fabrication of New Nanostructured SnO₂‐Carbon Composite Microspheres for Fast and Stable Lithium Storage Performance

Abstract

One-pot method for metal oxide-carbon composite microsphere with three-dimensional ordered macroporous (3DOM) structure is first introduced. The 3DOM structured SnO2 -carbon microspheres prepared as the first target material show superior electrochemical properties as anode material for lithium ion batteries. The newly developed process can be applied to the preparation of 3DOM-structured metal oxide-carbon composite microspheres for wide applications.

Enhanced Li+ storage properties of few-layered MoS2-C composite microspheres embedded with Si nanopowder

“…The resulting Nyquist plots, shown in Fig. S8 (in the ESM), depict a semicircle in the medium-frequency range, which is assigned to the charge-transfer resistance of the electrodes, and a line inclined at approximately 45° to the real axis at low frequencies, corresponding to Li diffusion within the electrode [58,59]. The chargetransfer resistance of the electrode decreases after the first cycle, owing to the transformation of its crystalline structure into an amorphous-fluid-like structure during the first discharge process.…”

Trimodally porous SnO2 nanospheres with three-dimensional interconnectivity and size tunability: a one-pot synthetic route and potential application as an extremely sensitive ethanol detector

“…Second, the synergistic combination of the spherical and onedimensional carbon-based templates provides precise control over the interconnectivity and multimodality of the pores. Efforts to enhance the macroporosity by introducing spherical templates have been reported, [41][42][43] but the nanoscale point contacts between the spherical pores often limits the mass transport through such pores, as evidenced by the present 2M-SnO 2 -based sensor. The main breakthrough of the present study is the significantly enhanced interconnectivity between the different pore types, which was achieved by employing highly connecting, one-dimensional, carbon-based precursors, such as MWCNTs.…”

Preparation of Nitrogen-Doped Carbon Spheres by Injecting Pyrolysis of Pyridine

“…11,12 Therefore, carbon materials for energy storage have widely been investigated and will continue to have an enormous influence on our life. [13][14][15][16][17][18] Carbon spheres can be synthesized by various methods, such as chemical vapour deposition (CVD), 1, 19-24 pyrolysis, 25,26 spray pyrolysis, 27,28 hydrothermal treatment, [29][30][31] and Reactions under Autogenic Pressure at Elevated Temperature, 32, 33 but a few convenient methods have been proposed. Carbon spheres prepared by different methods usually have different microstructure that has direct influence on their electrochemical properties.…”