Controlled surface modification of highly crystalline vertically aligned carbon nanotubes by defluorination and their electrochemical properties
| Project/Area Number |
15H04131
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Surface and interface engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
Sato Yoshinori 東北大学, 環境科学研究科, 准教授 (30374995)
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| Co-Investigator(Kenkyū-buntansha) |
田路 和幸 東北大学, 環境科学研究科, 教授 (10175474)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Keywords | 垂直配向カーボンナノチューブ / 高結晶 / 脱フッ素 / 表面制御改質 / 電気化学 |
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| Outline of Final Research Achievements |
Nitrogen-doped vertically aligned multi-walled carbon nanotubes (Nx-VAMWCNTs) and defluorinated VAMWCNTs (deFx-VAMWCNTs) were prepared from fluorinated VAMWCNTs. N500-VAMWCNTs and deF500-VAMWCNTs were modified with doped nitrogen atoms and a small amount of fluorine groups without destroying the alignment structure of the nanotubes.
The specific capacitance of the N500-VAMWCNT electrodes was 12.0 F/g at a scan rate of 100 mV/s, which is approximately 1.8 times the value obtained for the as-grown VAMWCNT electrodes. Based on the order of self-potential of each sample in three-electrode cell system, combined cells were assembled with the deF550- and N500-VAMWCNTs as positive and negative electrodes, respectively. As a result, the open circuit voltage of combined cells exhibited +0.16 V, and their cell voltage and energy density were larger than those of normal cells (N500-VAMWCNT electrodes) when each cell was provided with equivalent electric charges per unit mass of the electrode.
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Report
(4 results)
Research Products
(49 results)
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[Journal Article] A three-dimensional block structure consisting exclusively of carbon nanotubes serving as bone regeneration scaffold and as bone defect filler.2017
Author(s)
Tanaka M, Sato Y, Haniu H, Nomura H, Kobayashi S, Takanashi S, Okamoto M, Takizawa T, Aoki K, Usui Y, Oishi A, Kato H, Saito N.
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Journal Title
PLoｓ One
Volume: 12
Issue: 2
Pages: e0172601-e0172601
DOI
NAID
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] In vitro and in vivo evaluation of a three-dimensional porous multi-walled carbon nanotube scaffold for bone regeneration.2017
Author(s)
Tanaka M, Sato Y, Zhang M, Haniu H, Okamoto M, Aoki K, Takizawa T, Yoshida K, Sobajima A, Kamanaka T, Kato H, Saito N.
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Journal Title
Nanomaterials-Baseｌ
Volume: 7
Issue: 2
Pages: 46-46
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Presentation] Oxygen Reduction Reaction of Nitrogen-Doped Single-Walled Carbon Nanotubes Synthesized by Defluorination2016
Author(s)
K. Yokoyama, S. Yokoyama, Y. Sato, K. Hirano, S. Hashiguchi, K. Motomiya, H. Ohta, H. Takahashi, K. Tohji, Y. Sato
Organizer
2016 MRS Fall Meeting
Place of Presentation
Hynes Convention Center (Boston, Massachusetts, USA)
Year and Date
2016-11-27
Related Report
Int'l Joint Research
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