Well-dispersed Sb2O3 nanoparticles encapsulated in multi-channel-carbon nanofibers as high-performance anode materials for Li/dual-ion batteries

Reasonable design and construction of electrode materials with high-performance and low-cost are essential for Li-ion batteries (LIBs) and dual-ion batteries (DIBs). Herein, an eco-friendly and facile strategy is proposed to encapsulate Sb2O3 nanoparticles in onedimensional (1D) multi-nanochannel-containing carbon nanofibers (Sb2O3@MCNF) using the electrospinning method as well as the subsequent calcination. Such unique construction not only effectively reduces the large volume variation during cycling, but also achieves the fast Li+/e(-) transportation. As a result, the optimized sample with the precursor triphenylantimony (III) content of 0.35 g (Sb2O3@MCNF-0.35) exhibits superior electrochemical performance as anode materials for LIBs and Li-based DIBs (LDIBs), including high reversible capacity (-333.5 mAh g(-1) at 1 A g(-1) for LIBs and 233.5 mAh g(-1) at 0.2 A g(-1) for LDIBs) and favorable cycling stability (over 800 cycles for LIBs and 100 cycles for LDIBs). These results demonstrate that the well-designed Sb2O3@MCNF-0.35 can availably boost the electrochemical performance, which provides vast potential for applications in the field of high-performance energy storage equipment. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

In this study, an eco-friendly and facile strategy was proposed to encapsulate Sb2O3 nanoparticles in one-dimensional multi-nanochannel-containing carbon nanofibers using the electrospinning method and subsequent calcination. The optimized sample exhibited superior electrochemical performance as anode materials for LIBs and LDIBs, including high reversible capacity and favorable cycling stability. The well-designed Sb2O3@MCNF-0.35 sample can effectively boost the electrochemical performance, showing great potential for applications in high-performance energy storage equipment.