Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes
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 u...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/100589 http://hdl.handle.net/10220/24125 |
| _version_ | 1826125357749633024 |
|---|---|
| author | Susantyoko, Rahmat Agung Wang, Xinghui Sun, Leimeng Pey, Kin Leong Fitzgerald, Eugene Zhang, Qing |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Susantyoko, Rahmat Agung Wang, Xinghui Sun, Leimeng Pey, Kin Leong Fitzgerald, Eugene Zhang, Qing |
| author_sort | Susantyoko, Rahmat Agung |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T06:35:19Z |
| format | Journal Article |
| id | ntu-10356/100589 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:35:19Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1005892020-03-07T14:02:46Z Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes Susantyoko, Rahmat Agung Wang, Xinghui Sun, Leimeng Pey, Kin Leong Fitzgerald, Eugene Zhang, Qing School of Electrical and Electronic Engineering Singapore-MIT Alliance Programme DRNTU::Engineering::Materials::Energy materials DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry DRNTU::Engineering::Nanotechnology 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. MOE (Min. of Education, S’pore) Accepted version 2014-10-24T07:07:27Z 2019-12-06T20:24:57Z 2014-10-24T07:07:27Z 2019-12-06T20:24:57Z 2014 2014 Journal Article 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. 0008-6223 https://hdl.handle.net/10356/100589 http://hdl.handle.net/10220/24125 10.1016/j.carbon.2014.05.060 en Carbon © 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: [http://dx.doi.org/10.1016/j.carbon.2014.05.060]. 23 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Energy materials DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry DRNTU::Engineering::Nanotechnology Susantyoko, Rahmat Agung Wang, Xinghui Sun, Leimeng Pey, Kin Leong Fitzgerald, Eugene Zhang, Qing Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title | Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title_full | Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title_fullStr | Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title_full_unstemmed | Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title_short | Germanium coated vertically-aligned multiwall carbon nanotubes as lithium-ion battery anodes |
| title_sort | germanium coated vertically aligned multiwall carbon nanotubes as lithium ion battery anodes |
| topic | DRNTU::Engineering::Materials::Energy materials DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry DRNTU::Engineering::Nanotechnology |
| url | https://hdl.handle.net/10356/100589 http://hdl.handle.net/10220/24125 |
| work_keys_str_mv | AT susantyokorahmatagung germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes AT wangxinghui germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes AT sunleimeng germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes AT peykinleong germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes AT fitzgeraldeugene germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes AT zhangqing germaniumcoatedverticallyalignedmultiwallcarbonnanotubesaslithiumionbatteryanodes |