Enhanced Li- and Na-storage in Sb-Graphene nanocomposite anodes

Journal Article · Fri Apr 15 00:00:00 EDT 2016 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.12.044· OSTI ID:22581511

Yi, Yeongjae; Shim, Hyun-Woo; Seo, Seung-Deok ^[1]; Dar, Mushtaq Ahmad ^[2]; Kim, Dong-Wan ^[1]

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1. School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713 (Korea, Republic of)
2. Center of Excellence for Research in Engineering Materials, Advanced Manufacturing Institute, King Saud University,Riyadh 11421 (Saudi Arabia)

Highlights: • Antimony-graphene nanocomposite (Sb-GNP) was prepared by a wet-chemical approach. • Sb-GNP exhibits the well-dispersed Sb nanoparticles anchored on the graphenes. • Sb-GNP shows highly reversible capacities in both Li- and Na-storage. - Abstract: Antimony-graphene nanocomposite (Sb-GNP) was prepared from commercially available graphene nanoplatelets (GNPs) by a simple wet-chemical route at room temperature, and systematically investigated as an anode material for both lithium- and sodium-ion batteries (LIBs and NIBs). The microstructural features of Sb-GNP, and of pure Sb nanoparticles prepared without addition of GNPs, were characterized using X-ray diffraction, field-emission scanning electron microscopy, and high-resolution transmission electron microscopy. The successful formation of a nanocomposite structure was observed for Sb-GNP; the Sb nanoparticles are well dispersed and anchored on graphene nanoplatelets without significant aggregation of Sb nanoparticles, in contrast to the pure Sb nanoparticles. Furthermore, galvanostatic studies revealed that Sb-GNP displays better Li- and Na-storage performance than the pure Sb nanoparticles when utilized as an anode material. The enhanced electrochemical performance can be attributed to the effects of nanocomposite formation with GNPs.

• OSTI ID: 22581511
• Journal Information: Materials Research Bulletin, Vol. 76; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANODES
ANTIMONY
COMPOSITE MATERIALS
ELECTROCHEMISTRY
FIELD EMISSION
GRAPHENE
LITHIUM ION BATTERIES
MICROSTRUCTURE
NANOCOMPOSITES
NANOPARTICLES
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION