2009 Fiscal Year Final Research Report
Surface effect on Li-ion diffusion in nano-sized electrodes
| Project/Area Number |
20810029
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Chuo University |
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Principal Investigator |
OKUBO Masashi Chuo University, エネルギー技術研究部門, 研究員 (20453673)
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| Project Period (FY) |
2008 – 2009
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| Keywords | リチウムイオン2次電池 / 電極 / ナノサイズ効果 |
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| Research Abstract |
High charge/discharge rate Li-ion batteries require short Li-ion diffusion length in electrodes, thus the nano-sized electrodes. The hydrothermal synthesis of the nano-sized electrodes such as LiCoO_2 or LiMn_2O_4 has been established in this study. Nano-sized LiCoO_2 has revealed to exhibit low charge/discharge capacity and voltage due to the surface Co(II) atom. In contrast, nano-sized LiMn_2O_4 showed higher charge/discharge capacity than the bulk one, since the surface energy compete with the lattice distortion during the redox process.
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[Journal Article] Synthesis of triaxial LiFePO4 nanowire with a VGCF core column and a carbon shell through the electrospinning method.2010
Author(s)
E. Hosono, Y. Wang, N. Kida, M. Enomoto, N. Kojima, M. Okubo, H. Matsuda, Y. Saito, T. Kudo, I. Honma, H.S. Zhou
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Journal Title
ACS Appl. Mater. Inter 2
Pages: 212-218
Peer Reviewed
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