期刊
IONICS
卷 26, 期 10, 页码 5019-5028出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-020-03641-2
关键词
SnSb alloy; Three-dimensional carbon framework; Sodium; potassium-ion battery; Anode
资金
- National Natural Science Foundation of China [51802288, U1804132]
- China Postdoctoral Science Foundation [2017M622369]
In this work, an efficient composite of SnSb alloy particles confined in three-dimensional porous carbon framework (SnSb@C) is rationally designed and fabricated by means of NaCl template-assisted in situ freeze-drying treatment and subsequent thermal reduction method. Benefit from rational material design and the excellent structural features of the active materials, the SnSb@C can deliver a high initial reversible capacity of 457 mA h g(-1)at 100 mA g(-1), and excellent cycling stability with capacity retention of 84% after 200 cycles at 0.1 A g(-1), when evaluated as an anode material for SIBs. Meanwhile, the SnSb@C electrode can also deliver a high reversible discharge capacity of 293 mA h g(-1)at 100 mA g(-1)after 100 cycles in PIBs with good rate capability and impressive cycling performance. These results demonstrated that the SnSb@C composite is a promising anode material for future high-performance SIBs and PIBs.
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