Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 25, Pages 10404-10409Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nj00941e
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Funding
- National Key RAMP
- D Program of China [2016YFB0100304]
- National Natural Science Foundation of China [21576100, 21776098]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2017A030306022]
- Guangzhou Technology Project [202002030164]
- Fundamental Research Funds for the Central Universities
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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/NiS(2)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.
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