Te/C nanocomposites for Li-Te Secondary Batteries
- Authors
- Seo, Jeong-Uk; Seong, Gun-Kyu; Park, Cheol-Min
- Issue Date
- 22-Jan-2015
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- SCIENTIFIC REPORTS, v.5
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 5
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22467
- DOI
- 10.1038/srep07969
- ISSN
- 2045-2322
- Abstract
- New battery systems having high energy density are actively being researched in order to satisfy the rapidly developing market for longer-lasting mobile electronics and hybrid electric vehicles. Here, we report a new Li-Te secondary battery system with a redox potential of similar to 1.7 V(vs. Li+/Li) adapted on a Li metal anode and an advanced Te/C nanocomposite cathode. Using a simple concept of transforming TeO2 into nanocrystalline Te by mechanical reduction, we designed an advanced, mechanically reduced Te/C nanocomposite electrode material with high energy density (initial discharge/charge: 1088/740 mA h cm(-3)), excellent cyclability (ca. 705 mA h cm(-3) over 100 cycles), and fast rate capability (ca. 550 mA h cm(-3) at 5C rate). The mechanically reduced Te/C nanocomposite electrodes were found to be suitable for use as either the cathode in Li-Te secondary batteries or a high-potential anode in rechargeable Li-ion batteries. We firmly believe that the mechanically reduced Te/C nanocomposite constitutes a breakthrough for the realization and mass production of excellent energy storage systems.
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Collections - Department of Materials Science and Engineering > 1. Journal Articles
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