Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?

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	Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?
	C. M. Chen; Q. Zhang; J. Q. Huang; W. Zhang; X. C. Zhao; C. H. Huang; F. Wei; Y. G. Yang; M. Z. Wang; D. S. Su
	2012
发表期刊	Journal of Materials Chemistry
ISSN	0959-9428
卷号	22 期号:28 页码:13947-13955
摘要	The introduction of a secondary phase is an efficient and effective way to improve the electrochemical performance of graphene towards energy storage applications. Two fundamental strategies including pre-graphenization and post-graphenization were widely employed for graphene-based hybrids. However, there is still an open question of which way is better. In this contribution, we investigated the differences in the structure and electrochemical properties of pre- and post-graphenized graphene-SnO2 hybrids. The pre-graphenization is realized by synthesis of thermally reduced graphene and subsequent impregnation of SnO2, while the post-graphenization is realized by introducing a Sn-containing phase onto GO sheets followed by chemical reduction. The pre-graphenization process provides a large amount of pores for ion diffusion, which is of benefit for loading of SnO2, fast ion diffusion for supercapacitors, and higher capacity for Li-ion batteries, but poor stability, while the post-graphenization process offers compact graphene and good interaction between the SnO2 and graphene, which provides stable structure for long term stability for supercapacitor and Li-ion battery use.
部门归属	[chen, cheng-meng; zhang, qiang; zhang, wei; zhao, xiao-chen; huang, chun-hsien; su, dang sheng] max planck gesell, fritz haber inst, dept inorgan chem, d-14195 berlin, germany. [chen, cheng-meng; yang, yong-gang; wang, mao-zhang] chinese acad sci, inst coal chem, key lab carbon mat, taiyuan 030001, peoples r china. [zhang, qiang; huang, jia-qi; wei, fei] tsinghua univ, dept chem engn, beijing key lab green react engn & technol, beijing 100084, peoples r china. [su, dang sheng] chinese acad sci, catalysis & mat div, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [huang, chun-hsien] natl tsing hua univ, dept biomed engn & environm sci, hsinchu 30013, taiwan. [zhao, xiao-chen] chinese acad sci, dalian inst chem phys, state key lab catalysis, dalian 116023, peoples r china.;su, ds (reprint author), max planck gesell, fritz haber inst, dept inorgan chem, faradayweg 4-6, d-14195 berlin, germany.;dangsheng@fhi-berlin.mpg.de
关键词	Performance Anode Materials Lithium Ion Batteries 2-dimensional Nanomaterial Supercapacitor Electrodes Sno2/graphene Composite Carbon Materials Mass-production Fabrication Capacitors Graphite
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59899
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. M. Chen,Q. Zhang,J. Q. Huang,et al. Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?[J]. Journal of Materials Chemistry,2012,22(28):13947-13955.
APA	C. M. Chen.,Q. Zhang.,J. Q. Huang.,W. Zhang.,X. C. Zhao.,...&D. S. Su.(2012).Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?.Journal of Materials Chemistry,22(28),13947-13955.
MLA	C. M. Chen,et al."Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?".Journal of Materials Chemistry 22.28(2012):13947-13955.