Qin Xueying; Wang Jinglun; Tang Daoping; Mai Yongjin; Zhang Lingzhi
Source Publicationjournalofzhejianguniversityscienceaappliedphysicsengineering
Abstract{3-2-(2-methoxyethoxy) ethoxy-propyl} triethoxysilane (TESM2) was synthesized and used as an electrolyte additive to improve the performances of lithium-ion batteries (LIBs). The electrochemical properties of the electrolyte (1 mol/L lithium hexafluorophosphate (LiPF _6)/ethylene carbonate (EC):diethylene carbonate (DEC):dimethyl carbonate (DMC), 1:1:1) with different contents of TESM2 were characterized by ionic conductivity measurement, galvanostatic charge/discharge test of graphite/Li half cells, and electrochemical impedance spectroscopy. Both the cycling performances and C-rate capabilities of graphite/Li half cells were significantly improved with an optimized content of 15% TESM2 in the electrolyte. The graphite/Li half cell delivered a very high specific capacity of 370 mAh/g at 0.2C rate without any capacity loss for 60 cycles, and retained a capacity of 292 mAh/g at 2C rate. The solid electrolyte interphase (SEI) film on the surface of the graphite anode was investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), indicating that TESM2 was effectively involved in the formation of SEI film on the surface of graphite.
Document Type期刊论文
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qin Xueying,Wang Jinglun,Tang Daoping,et al. triethoxysilanewitholigoethyleneoxidesubstituentasfilmformingadditiveforgraphiteanode[J]. journalofzhejianguniversityscienceaappliedphysicsengineering,2013,14(7):514.
APA Qin Xueying,Wang Jinglun,Tang Daoping,Mai Yongjin,&Zhang Lingzhi.(2013).triethoxysilanewitholigoethyleneoxidesubstituentasfilmformingadditiveforgraphiteanode.journalofzhejianguniversityscienceaappliedphysicsengineering,14(7),514.
MLA Qin Xueying,et al."triethoxysilanewitholigoethyleneoxidesubstituentasfilmformingadditiveforgraphiteanode".journalofzhejianguniversityscienceaappliedphysicsengineering 14.7(2013):514.
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