Electrochemical Properties of Tin Oxide Flake/Reduced Graphene Oxide/Carbon Composite Powders as Anode Materials for Lithium-Ion Batteries
- Authors
- Lee, Su Min; Choi, Seung Ho; Kang, Yun Chan
- Issue Date
- 10-11월-2014
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- energy conversion; energy-storage materials; graphene; nanostructures; synthesis design
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.20, no.46, pp.15203 - 15207
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 20
- Number
- 46
- Start Page
- 15203
- End Page
- 15207
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96779
- DOI
- 10.1002/chem.201404077
- ISSN
- 0947-6539
- Abstract
- Hierarchically structured tin oxide/reduced graphene oxide (RGO)/carbon composite powders are prepared through a one-pot spray pyrolysis process. SnO nanoflakes of several hundred nanometers in diameter and a few nanometers in thickness are uniformly distributed over the micrometer-sized spherical powder particles. The initial discharge and charge capacities of the tin oxide/RGO/carbon composite powders at a current density of 1000mAg(-1) are 1543 and 1060mAhg(-1), respectively. The discharge capacity of the tin oxide/RGO/carbon composite powders after 175 cycles is 844mAhg(-1), and the capacity retention measured from the second cycle is 80%. The transformation during cycling of SnO nanoflakes, uniformly dispersed in the tin oxide/RGO/carbon composite powder, into ultrafine nanocrystals results in hollow nanovoids that act as buffers for the large volume changes that occur during cycling, thereby improving the cycling and rate performances of the tin oxide/RGO/carbon composite powders.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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