期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 9, 期 18, 页码 11381-11396出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta01768c
关键词
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资金
- National Key Research and Development Program of China [2017YFA0204600]
- National Science Fund for Distinguished Young Scholars [51625102]
- National Natural Science Foundation of China [51971065, 61574039]
- Innovation Program of Shanghai Municipal Education Commission [2019-01-07-00-07-E00028]
Tin sulfides fabricated using a metal-organic framework template exhibit superior storage performance in both lithium-ion batteries and sodium-ion batteries, with the 3D hollow rod-like SnS@nitrogen-doped carbon@nitrogen-doped graphene showing ultrahigh specific capacity, rate capability, and excellent cycle lifetimes.
Tin sulfides have attracted considerable attention due to their unique layered structure, large interlayer spacing and high theoretical capacity for both lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs). However, the development of tin sulfides has been limited by their poor rate capability and cycle life. To intrinsically maximize the lithium/sodium storage properties of tin sulfides, herein, a metal-organic framework (MOF) template-based strategy is developed to fabricate SnS2@C and SnS@C for LIBs, as well as 3D hollow rod-like SnS@nitrogen-doped carbon@nitrogen-doped graphene (SnS@NC@NG) to accommodate Na+ behavior in NIBs. The results show that structural/physicochemical characterization helps gain insights into the intrinsic relationships between the sulfidation temperature and crystal structures as well as lithium/sodium storage behaviors. The as-prepared SnS2@C and SnS@C exhibit superior Li+ storage behavior to SnSx-based electrodes benefiting from their unique structures (798.3 mA h g(-1) and 850.9 mA h g(-1) at 5 A g(-1) after 4000 and 5000 cycles, respectively). Particularly, the resulting SnS@NC@NG demonstrates a robust 3D hollow interacted nanostructure during sodiation/desodiation processes, showing ultrahigh specific capacity, rate capability and excellent cycle lifetimes (501.5 mA h g(-1) at 2.0 A g(-1) after 5000 cycles). This work presents a newly effective strategy to construct high-performance tin sulfide hybrids for energy storage.
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