期刊
JOURNAL OF POWER SOURCES
卷 347, 期 -, 页码 170-177出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.02.061
关键词
Lithium ion battery; Silicon monoxide; Stabilized lithium metal powders; Prelithiation; Anode material
资金
- The Natural Science Foundation of China [51634003, 50902038]
- Heilongjiang Science & Technology Key Bidding Program [GA14A102]
The micro-sized SiO-based composite anode material (d-SiO/G/C) for lithium-ion batteries (LIBs) is achieved via the disproportionation reaction of SiO followed by a pitch pyrolysis reaction. The d-SiO/G/C composite exhibits an initial reversible capacity of 905 mAh g(-1) and excellent cycling stability. The initial Coulombic efficiency of the d-SiO/G/C composite can be significantly improved from 68.1% to 98.5% by the prelithiation of the composite anode using stabilized lithium metal powders (SLMP), which counteracts the irreversible capacity loss caused by the solid electrolyte interphase (SEI) formation and irreversible conversion reaction during the first lithiation. The micro-sized d-SiO/G/C composite anode with SLMP prelithiation maintains an excellent cycling stability, suggesting its great potential in practical application for high specific energy lithium ion batteries. (C) 2017 Elsevier B.V. All rights reserved.
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