New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries

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	New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries; New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries
	H. L. Zhang; C. H. Sun; F. Li; C. Liu; J. Tan; H. M. Cheng
	2007 ; 2007
发表期刊	Journal of Physical Chemistry C ; Journal of Physical Chemistry C
ISSN	1932-7447 ; 1932-7447
卷号	111 期号:12 页码:4740-4748
摘要	Sufficient understanding of surface chemistry for electrode and electrolytes during an electrochemical process is a crucial issue to further improve the performance of lithium ion batteries (LIB). In this study, we systematically investigate the interaction between propylene carbonate (PC)-based electrolytes and graphite anode material, which has been under dispute for a long time in the electrochemical community, and a new physical model is proposed to explain the poor compatibility of PC with graphite. With the aid of scanning electron microscopy, focused ion beam workstation, Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and thermogravimetry-differential scanning calorimetry, the cumbersome but intriguing questions on the poor compatibility are addressed: (i) Does PC truly have the ability to co-intercalate into graphite materials? Our answer is yes. (ii) Where is the intercalation site? It is around the crystal boundary. (iii) Why does the co-intercalation occur for PC not ethylene carbonateanother kind of useful electrolyte in LIB, since both of them have a similar molecular structure? The methyl group in the PC molecule is the main wire-puller, which makes decomposition products of PC puffed and thus incompetent in inhibiting the subsequent co-intercalation. Finally, three feasible strategies to overcome the poor compatibility are summarized.; Sufficient understanding of surface chemistry for electrode and electrolytes during an electrochemical process is a crucial issue to further improve the performance of lithium ion batteries (LIB). In this study, we systematically investigate the interaction between propylene carbonate (PC)-based electrolytes and graphite anode material, which has been under dispute for a long time in the electrochemical community, and a new physical model is proposed to explain the poor compatibility of PC with graphite. With the aid of scanning electron microscopy, focused ion beam workstation, Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and thermogravimetry-differential scanning calorimetry, the cumbersome but intriguing questions on the poor compatibility are addressed: (i) Does PC truly have the ability to co-intercalate into graphite materials? Our answer is yes. (ii) Where is the intercalation site? It is around the crystal boundary. (iii) Why does the co-intercalation occur for PC not ethylene carbonateanother kind of useful electrolyte in LIB, since both of them have a similar molecular structure? The methyl group in the PC molecule is the main wire-puller, which makes decomposition products of PC puffed and thus incompetent in inhibiting the subsequent co-intercalation. Finally, three feasible strategies to overcome the poor compatibility are summarized.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn ; chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Surface-film Formation Surface-film Formation Electrochemical Intercalation Electrochemical Intercalation Negative Negative Electrode Electrode Natural Graphite Natural Graphite Alkyl Dicarbonates Alkyl Dicarbonates Vinylene Carbonate Vinylene Carbonate Xps Xps Analysis Analysis High-power High-power Li Li Cells Cells
URL	查看原文 ; 查看原文
WOS记录号	WOS:000245084100042 ; WOS:000245084100042
引用统计	被引频次：35[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34024
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. L. Zhang,C. H. Sun,F. Li,et al. New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries, New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries[J]. Journal of Physical Chemistry C, Journal of Physical Chemistry C,2007, 2007,111, 111(12):4740-4748, 4740-4748.
APA	H. L. Zhang,C. H. Sun,F. Li,C. Liu,J. Tan,&H. M. Cheng.(2007).New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries.Journal of Physical Chemistry C,111(12),4740-4748.
MLA	H. L. Zhang,et al."New insight into the interaction between propylene carbonate-based electrolytes and graphite anode material for lithium ion batteries".Journal of Physical Chemistry C 111.12(2007):4740-4748.