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Improved electrochemical performance of micro-sized SiO-based composite anode by prelithiation of stabilized lithium metal powder.

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Bibliographic Details
Title:	Improved electrochemical performance of micro-sized SiO-based composite anode by prelithiation of stabilized lithium metal powder.
Authors:	Pan, Qingrui¹, Zuo, Pengjian¹ zuopj@hit.edu.cn, Mu, Tiansheng¹, Du, Chunyu¹, Cheng, Xinqun¹, Ma, Yulin¹, Gao, Yunzhi¹, Yin, Geping¹ yingeping@hit.edu.cn
Source:	Journal of Power Sources. Apr2017, Vol. 347, p170-177. 8p.
Subjects:	Metal powders, Lithium-ion batteries, Disproportionation (Chemistry), Sodium, Pyrolysis, Superionic conductors
Abstract:	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. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	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. [ABSTRACT FROM AUTHOR]
ISSN:	03787753
DOI:	10.1016/j.jpowsour.2017.02.061