Layer-by-layer assembled graphene-coated mesoporous SnO2 spheres as anodes for advanced Li-ion batteries

被引：38

作者：

Shahid, Muhammad ^{[1
]}

Yesibolati, Nulati ^{[1
]}

Reuter, M. C. ^{[2
]}

Ross, F. M. ^{[2
]}

Alshareef, H. N. ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol, Thuwal 239556900, Saudi Arabia

[2] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 263卷

关键词：

Layer-by-layer assembly; Graphene; Tin dioxide; Anode material; Lithium ion battery; ELECTROCHEMICAL IMPEDANCE; HIGH-CAPACITY; LITHIUM; CARBON; NANOPARTICLES; PERFORMANCE; GRAPHITE; NANOCOMPOSITES; COMPOSITES; ELECTRODES;

D O I：

10.1016/j.jpowsour.2014.03.146

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report layer-by-layer (LBL) assembly of graphene/carbon-coated mesoporous SnO2 spheres (Gr/C-SnO2 spheres), without binder and conducting additives, as anode materials with excellent Li-ion insertion-extraction properties. Our results indicate that these novel LBL assembled electrodes have high reversible Li storage capacity, improved cycling, and especially good rate performance, even at high specific currents. The superior electrochemical performance offered by these LBL assembled Gr/C-SnO2 spheres is attributed to the enhanced electronic conductivity and effective diffusion of Li ions in the interconnected network of nanoparticles forming the mesoporous SnO2 spheres. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：239 / 245

页数：7

共 47 条

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