Ternary SnO2@PANI/rGO nanohybrids as excellent anode materials for lithium-ion batteries

Synergistic effect of the core-shell structured Sn/SnO2/C ternary anode system with the improved sodium storage performance

“…All the curves are composed of one depressed semicircle in the high frequency region and one straight line in the low frequency region [48,49]. According to previous reports [50], the intercept on the Z 0 axis in the highfrequency region represents the resistance of electrolyte (Re). The diameter of the semicircle is associated with the charge transfer impedance (Rct), and the low frequency slope corresponds to the Warburg impedance (W).…”

Research Progress on Applications of Polyaniline (PANI) for Electrochemical Energy Storage and Conversion

“…Enhanced capacity retention of over 1000 mAh/g at 400 mA/g after 380 cycles and excellent rate performance of 611 mAh/g at 1600 mA/g were reported. A novel 3D ternary PANI/SnO 2 /RGO nanostructure was successfully designed as an anode for LIBs via an easy dip-coating of PANI@SnO 2 and graphene dispersion on Cu foam (Figure 15c) in Ding's [120] study. In the nanostructure, PANI acted as the conductive matrix as well as the glue that bind the hollow SnO 2 nanoparticles on RGO sheets tightly to avoid aggregation while cycling, which greatly improved the rate performance; the hollow SnO 2 nanoparticles acted as the buffer for enormous volume changes during insertion/extraction of Li, and provided active spots for vitiation, which resulted in enhanced cycling stability; the assembly of PANI@SnO 2 , RGO and Cu foam with strong contact achieves ultra-fast electron transport by a 3D expressway, which effectively enhances electronic conductivity and rate performance.…”

“…(a) Rate capabilities of the SnO 2 @PANI/rGO nanocomposites, SnO 2 @PANI, SnO 2 /RGO and SnO 2 respectively; (b) cyclic behaviors of the SnO 2 @PANI/rGO composites, SnO 2 /rGO, SnO 2 @PANI and SnO 2 at the current density of 100 mA/g and (c) a schematic illustration of the preparation of the PANI/SnO 2 /RGO nanocomposite[120] (reproduced with permission from Elsevier).…”

The structure and electrochemical properties of poly(3,4-propylenedioxythiophene)/SnO2nanocomposites synthesized by mechanochemical route

“…Nano‐SnO 2 has been widely used in a variety of applications such as electrodes for lithium ion batteries, transparent conducting electrodes, gas sensors, catalysts, electrochromic windows, hybrid microelectronic applications, and supercapacitors . However, during the faradaic process of pseudocapacitors, its relatively low electric conductivity and cycling performance caused by serious aggregation and considerable volume change(volume expansion >200%) upon cycling make SnO 2 undesirable for the industrial application in energy storage . To overcome these drawbacks, a conductive phase maybe added to enhance the performance of the electrode.…”