Journal
RSC ADVANCES
Volume 2, Issue 32, Pages 12177-12181Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra22162d
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Funding
- WCU (World Class University) program through the National Research Foundation of Korea
- Institute of Basic Science (IBS) program
- Korean Ministry of Education, Science, and Technology
- Fundamental R&D Program for Technology of World Premier Materials
- Ministry of Knowledge Economy, Republic of Korea
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The simple preparations of vertically aligned iron oxide nanotube arrays and porous magnetite nanostructures and their application as three-dimensional electrodes for lithium ion microbatteries are introduced. Nanotube arrays are well formed across a very large area with a similar to 40 nm nanotube diameter. The nanotubes change to be porous nanostructures like nano-pillar arrays after heat treatment under 10% H-2. These two structures allow the omission of conductive agents and binder in the battery assembly. In addition, the structural advantages for lithium ion and electron transport are exhibited through excellent cyclic stability and rate capability even at very high current density, which can complete one charge/discharge in a few minutes.
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