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https://hdl.handle.net/2440/130282
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Type: | Journal article |
Title: | Catalytic role of Ge in highly reversible GeO₂/Ge/C nanocomposite anode material for lithium batteries |
Other Titles: | Catalytic role of Ge in highly reversible GeO(2)/Ge/C nanocomposite anode material for lithium batteries |
Author: | Seng, K.H. Park, M.H. Guo, Z.P. Liu, H.K. Cho, J. |
Citation: | Nano Letters: a journal dedicated to nanoscience and nanotechnology, 2013; 13(3):1230-1236 |
Publisher: | American Chemical Society |
Issue Date: | 2013 |
ISSN: | 1530-6984 1530-6992 |
Statement of Responsibility: | Kuok Hau Seng, Mi-hee Park, Zai Ping Guo, Hua Kun Liu and Jaephil Cho |
Abstract: | GeO2/Ge/C anode material synthesized using a simple method involving simultaneous carbon coating and reduction by acetylene gas is composed of nanosized GeO2/Ge particles coated by a thin layer of carbon, which is also interconnected between neighboring particles to form clusters of up to 30 μm. The GeO2/Ge/C composite shows a high capacity of up to 1860 mAh/g and 1680 mAh/g at 1 C (2.1 A/g) and 10 C rates, respectively. This good electrochemical performance is related to the fact that the elemental germanium nanoparticles present in the composite increases the reversibility of the conversion reaction of GeO2. These factors have been found through investigating and comparing GeO2/Ge/C, GeO2/C, nanosized GeO2, and bulk GeO2. |
Keywords: | Germanium dioxide; high capacity; anode lithium batteries |
Rights: | © 2013 American Chemical Society |
DOI: | 10.1021/nl304716e |
Grant ID: | http://purl.org/au-research/grants/arc/DP1094261 |
Published version: | http://dx.doi.org/10.1021/nl304716e |
Appears in Collections: | Aurora harvest 8 Chemistry and Physics publications |
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