Issue 25, 2020

Heterostructured CoS2/NiS2 nanoparticles encapsulated in bamboo-like carbon nanotubes as a high performance anode for sodium ion batteries

Abstract

Sodium ion batteries (SIBs) are promising energy storage systems because sodium is a low cost and abundant resource. Appropriate electrode materials with high performance are a prerequisite to satisfy demand for efficient SIBs. Heterostructured electrodes show high specific capacity and rate capacity for SIBs owing to the synergistic effect of multiple components compared with a single component. Here, heterostructured binary metal-sulfide CoS2/NiS2 compounds encapsulated in bamboo-like carbon nanotubes (CoS2/NiS2@B-CNT), were prepared by pyrolysis and sulfidation procedures. The heterostructured anode material demonstrates a high capacity of 625.8 mA h g−1 at 0.1 A g−1, a distinguished rate capacity (491.6 mA h g−1 at 10 A g−1), and stable cyclic property (497.6 mA h g−1 at 5 A g−1 after 1000 cycles, 93.0% capacity retention). This design of a heterostructure offers a new avenue to develop anode materials with high performance for SIBs.

Graphical abstract: Heterostructured CoS2/NiS2 nanoparticles encapsulated in bamboo-like carbon nanotubes as a high performance anode for sodium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
23 Feb 2020
Accepted
20 May 2020
First published
22 May 2020

New J. Chem., 2020,44, 10404-10409

Heterostructured CoS2/NiS2 nanoparticles encapsulated in bamboo-like carbon nanotubes as a high performance anode for sodium ion batteries

X. Yao, H. Cheng, Z. Jiang, Q. Han, Y. Wang and S. Wang, New J. Chem., 2020, 44, 10404 DOI: 10.1039/D0NJ00941E

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