A LiF Nanoparticle-Modified Graphene Electrode for High-Power and High-Energy Lithium Ion Batteries

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	A LiF Nanoparticle-Modified Graphene Electrode for High-Power and High-Energy Lithium Ion Batteries
	Z. S. Wu; L. L. Xue; W. C. Ren; F. Li; L. Wen; H. M. Cheng
	2012
发表期刊	Advanced Functional Materials
ISSN	1616-301X
卷号	22 期号:15 页码:3290-3297
摘要	Surface modification of carbon materials plays an important role in tailoring carbon surface chemistry to specify their electrochemical performance. Here, a surface modification strategy for graphene is proposed to produce LiF-nanoparticle-modified graphene as a high-rate, large-capacity pre-lithiated electrode for high-power and high-energy lithium ion batteries. The LiF nanoparticles covering the active sites of the graphene surface provide an extra Li source and act as an effective solid electrolyte interphase (SEI) inhibiter to suppress LiFP6 electrolyte decomposition reactions, affect SEI components, and reduce their thickness. Consequently, the Li-ion diffusion is greatly sped up and the thermodynamic stability of the electrode is significantly improved. This modified graphene electrode shows excellent rate capability and improved first-cycle coulombic efficiency, cycling stability, and ultrahigh power and energy densities accessible during fast charge/discharge processes.
部门归属	[wu, zhong-shuai; xue, lili; ren, wencai; li, feng; wen, lei; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wu, zs (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;wcren@imr.ac.cn; cheng@imr.ac.cn
关键词	Graphene Surface Modification Anodes Lithium Ion Batteries Solid Electrolyte Interphase Surface-film Formation High-rate Capability Anode Materials High-capacity Reversible Capacity Cyclic Performance Graphite Electrode Vinylene Carbonate Thermal-stability Solid-electrolyte
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60345
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. S. Wu,L. L. Xue,W. C. Ren,et al. A LiF Nanoparticle-Modified Graphene Electrode for High-Power and High-Energy Lithium Ion Batteries[J]. Advanced Functional Materials,2012,22(15):3290-3297.
APA	Z. S. Wu,L. L. Xue,W. C. Ren,F. Li,L. Wen,&H. M. Cheng.(2012).A LiF Nanoparticle-Modified Graphene Electrode for High-Power and High-Energy Lithium Ion Batteries.Advanced Functional Materials,22(15),3290-3297.
MLA	Z. S. Wu,et al."A LiF Nanoparticle-Modified Graphene Electrode for High-Power and High-Energy Lithium Ion Batteries".Advanced Functional Materials 22.15(2012):3290-3297.