Poly(vinyl chloride) (PVC) coated idea revisited: Influence of carbonization procedures on PVC-coated natural graphite as anode materials for lithium ion batteries

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	Poly(vinyl chloride) (PVC) coated idea revisited: Influence of carbonization procedures on PVC-coated natural graphite as anode materials for lithium ion batteries
	H. L. Zhang; F. Li; C. Liu; H. M. Cheng
	2008
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	112 期号:20 页码:7767-7772
摘要	The influence of carbonization procedures on poly(vinyl chloride) (PVC) coated natural graphite (NG) spheres as anode materials for lithium ion batteries was investigated in detail in this study. At first, thermogravimetry-mass spectrometry was utilized to analyze pyrolysis behaviors of PVC, and on the basis of the results three typical carbonization procedures consisting of different heating steps were determined to fabricate PVC-coated NG spheres. The structural parameters, morphologies, pore size distributions, and Brunauer-Emmett-Teller specific surface areas of these coated samples were systematically characterized by employing X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and N(2) adsorption/desorption isotherms. Electrochemical performance measurements indicated that all the coated samples display a significantly improved cyclability, rate capability, and initial Coulombic efficiency in comparison with the pristine NG spheres. The reasons for the performance improvement were further explored using electrochemical impedance spectroscopy. Moreover, the sample under the carbonization procedure involving isothermal heating steps at temperatures of 280, 450, and 900 degrees C is even better than the well-recognized mesocarbon microbeads in terms of reversible capacity and rate capability.
部门归属	[zhang, hong-li; li, feng; liu, chang; cheng, hui-ming] 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	Electrochemical Characteristics Secondary Batteries Electrolyte Interface Surface Modification Negative Electrode Carbon Material Performance Li Particles Capacity
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WOS记录号	WOS:000255905400042
引用统计	被引频次：38[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/321006/33316
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. L. Zhang,F. Li,C. Liu,et al. Poly(vinyl chloride) (PVC) coated idea revisited: Influence of carbonization procedures on PVC-coated natural graphite as anode materials for lithium ion batteries[J]. Journal of Physical Chemistry C,2008,112(20):7767-7772.
APA	H. L. Zhang,F. Li,C. Liu,&H. M. Cheng.(2008).Poly(vinyl chloride) (PVC) coated idea revisited: Influence of carbonization procedures on PVC-coated natural graphite as anode materials for lithium ion batteries.Journal of Physical Chemistry C,112(20),7767-7772.
MLA	H. L. Zhang,et al."Poly(vinyl chloride) (PVC) coated idea revisited: Influence of carbonization procedures on PVC-coated natural graphite as anode materials for lithium ion batteries".Journal of Physical Chemistry C 112.20(2008):7767-7772.