Surfactant-free microwave hydrothermal synthesis of SnO2 nanosheets as an anode material for lithium battery applications

Tin Oxide Based Nanomaterials and Their Application as Anodes in Lithium‐Ion Batteries and Beyond

“…A recent example for the fabrication of SnO 2 nanosheets is given by the work of Narsimulu et al., who described the surfactant‐ and template‐free hydrothermal and microwave‐assisted synthesis of agglomerated SnO 2 nanosheets (Figure ) . The respective electrodes showed a moderate initial discharge capacity of 1350 mAh g −1 , with a reversible capacity of 873 mAh g −1 that faded to 258 mAh g −1 within 50 cycles at a rate of 100 mA g −1 …”

Facile synthesis of sesame‐husk‐like porous SnO 2 nanocylinders as anodes for high‐performance lithium‐ion batteries

“…The abrupt fading of discharge capacity during the initial 10 cycles can be ascribed to the formation of SEI film resulting from the interaction between the electrolyte and the active materials, the structural collapse suffering from severe volumetric expansion and contraction, and the structural realignment such as decomposition of SnO 2 to Sn [17]. Although the capacity retention of porous SnO 2 nanocylinder is not pretty good and is worse than what the authors in [12, 15, 17] reported, it still retains a higher specific charge capacity of 414.5 mAh/g in comparison with non‐porous SnO 2 nanocylinder (247.6 mAh/g) after 50 cycles, which is also superior to some previous reports [18–20]. The relative better cycling performance of porous SnO 2 nanocylinders can be ascribed to its particular porous nanostructure, which could adapt the volume change in virtue of the additional void space during cycling.…”

High Capacity Electrospun MgFe2O4–C Composite Nanofibers as an Anode Material for Lithium Ion Batteries

“…Figure shows the Nyquist plots (real Z′ vs. imaginary Z′′ ) obtained for the freshly assembled cell and after 1 st cycles. From Figure , the observed impedance spectra showed semicircle at high frequency region, corresponds to the charge transfer resistance, which is due to the transport of lithium‐ions through the electrode/electrolyte interface and inclined straight line at low‐frequency region, corresponds to the Warburg impedance, which is due to the diffusion of the lithium ion into the electrode materials . The inset of Figure shows the equivalent electrical circuit model, which consists of the ohmic resistance of the electrolyte (Re), surface film resistance (R f ), charge transfer resistance (R ct ), double layer capacitance (CPE), and the Warburg impedance (Z w ), fitting parameters are summarized in Table ,.…”