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Title: Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes
Authors: Susantyoko, Rahmat Agung
Wang, Xinghui
Sun, Leimeng
Pey, Kin Leong
Fitzgerald, Eugene
Zhang, Qing
Keywords: DRNTU::Engineering::Materials::Energy materials
DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films
DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry
Issue Date: 2014
Source: Susantyoko, R. A., Wang, X., Sun, L., Pey, K. L., Fitzgerald, E., & Zhang, Q. (2014). Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes. Carbon, 77, 551-559.
Series/Report no.: Carbon
Abstract: The performance of polycrystalline and amorphous germanium (Ge) as anode active materials for lithium-ion batteries was studied systematically. Polycrystalline Ge on vertically-aligned multiwall carbon nanotube (MWCNT) arrays (MWCNT/c-Ge) and amorphous Ge on the arrays (MWCNT/a-Ge) were fabricated using a low pressure chemical vapor deposition system and a radio frequency sputtering system, respectively. The vertically-aligned MWCNT arrays were used as a platform to minimize pulverization problem. The MWCNT/a-Ge had a specific capacity of 1096.1 mAhg−1 at the rate of 162.4 mAg−1 at the 100th cycle. In comparison, the MWCNT/c-Ge only showed a specific capacity of 730.2 mAhg−1 at the rate of 162.4 mAg−1 at the 100th cycle. The MWCNT/a-Ge sample showed better performances as the MWCNT/a-Ge skipped the electrochemically-driven solid-state amorphization of crystalline Ge during the first lithiation.
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2014.05.060
Rights: © 2014 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Carbon, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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