Enhanced Anode Performances of Polyaniline–TiO₂–Reduced Graphene Oxide Nanocomposites for Lithium Ion Batteries

Abstract

Here, we report a three-layer-structured hybrid nanostructure consisting of transition metal oxide TiO(2) nanoparticles sandwiched between carbonaceous polymer polyaniline (PANI) and graphene nanosheets (termed as PTG), which, by simultaneously hindering the agglomeration of TiO(2) nanoparticles and enhancing the conductivity of PTG electrode, enables fast discharge and charge. It was demonstrated that the PTG exhibited improved electrochemical performance compared to pure TiO(2). As a result, PTG nanocomposite is a promising anode material for highly efficient lithium ion batteries (LIBs) with fast charge/discharge rate and high enhanced cycling performance [discharge capacity of 149.8 mAh/g accompanying Coulombic efficiency of 99.19% at a current density of 5C (1000 mA/g) after 100 cycles] compared to pure TiO(2). We can conclude that the concept of applying three-layer-structured graphene-based nanocomposite to electrode in LIBs may open a new area of research for the development of practical transition-metal oxide graphene-based electrodes which will be important to the progress of the LIBs science and technology.

Magnetic Nanocomposite of Cross‐Linked Melamine Groups Decorated with Large Amounts of Gold NPs: Reduction of Nitro Compounds and Suzuki–Miyaura Coupling Reactions in Aqueous Media

“…According to the IUPAC classification the synthesized MNP@PMelamine exhibit type‐IV isotherm with an H3 hysteresis loop, establishing the mesoporous characteristics of MNP@PMelamine . Moreover, with increasing the gas pressure, the narrow hysteresis loop proves that the pores are definitely open, and thus there is no significant delay between the capillary evaporation and condensation for N 2 gas . The BET surface area of the composite nanoparticles is around 31.77 m 2 /g, with an average pore size 5–10 nm calculated by the Barret‐Joiner Halenda (BJH) method which moreover suggest the porous structure.…”

Graphene oxide: strategies for synthesis, reduction and frontier applications

“…A three-layer-structured hybrid nanostructure consisting oftransition metal oxide TiO 2 nanoparticles sandwiched between carbonaceous polymerpolyaniline and graphene nanosheets enabled fast discharge and charge compersion to TiO 2 as reported by Zhang et al 161 . Wang et al 162 reported the adaptable silicon-carbon nanocables sandwiched between reduced GO sheets as a anode material for Lithium Ion Battery.…”

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO2 Nanocomposites for Supercapacitor Energy‐Storage Application

“…During the pressure change, the hysteresis loop acquires a wide gap suggesting that the mesopores are defi nitely open which leads to signifi cant delaying between the capillary evaporation and condensation for N 2 . [ 34 ] The BET surface areas of the GZP-I (6 h) and GZ were calculated to be 207.1 m 2 g −1 and 7.62 m 2 g −1 , respectively. The total pore volumes of the GZP-I (6 h) and GZ were 0.3017 cc g −1 and 0.0105 cc g −1 , respectively.…”