期刊
ACS NANO
卷 15, 期 7, 页码 12140-12150出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c03516
关键词
MXene; oleylamine; interfacial self-assembly; NiS; batteries
类别
资金
- National Natural Science Foundation of China [22005076, 21571040]
- Young Top-Notch Talent of National Ten Thousand Talent Program [W03070054]
- Heilongjiang Touyan Innovation Team Program
- Heilongjiang Province Marine New Energy and Protective Materials Engineering Technology Research Center [002100130630A]
- Fundamental Research Funds for the Central Universities
The study presents a powerful bottom-up strategy for constructing sandwich-structured Co-NiS/MXene composites with excellent lithium and sodium ion storage performance. The composite shows outstanding cycling stability and rate capability, demonstrating potential for high-performance energy storage applications.
Exploring nanostructured transition-metal sulfide anode materials with excellent electrical conductivity is the key point for high-performance alkali metal ion storage devices. Herein, we propose a powerful bottom-up strategy for the construction of a series of sandwich-structured materials by a rapid interfacial self-assembly approach. Oleylamine could act as a functional reagent to guarantee that the nanomaterials self-assemble with MXene. Benefiting from the small size of Co-NiS nanorods, excellent conductivity of MXene, and sandwiched structure of the composite, the Co-NiS/MXene composite could deliver a high discharge capacity of 911 mAh g(-1) at 0.1 A g(-1) for lithium-ion storage. After 200 cycles at 0.1 A g(-1), a high specific capacity of 1120 mAh g(-1) could be still remaining, indicating excellent cycling stability. For sodium-ion storage, the composite exhibits high specific capacity of 541 mAh g(-1) at 0.1 A g(-1) and excellent rate capability (263 mAh g(-1) at 5 A g(-1)). This work offers a straightforward strategy to design and construct MXene-based anode nanomaterials with sandwiched structure for high-performance alkali metal ion storage and even in other fields.
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