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Song, Hyun-Kon
eclat: ElectroChemistry Lab of Advanced Technology
Research Interests
  • Electrochemical analysis, electroactive materials, electrochemistry-based energy devices

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High-performance silicon-based multicomponent battery anodes produced via synergistic coupling of multifunctional coating layers

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Title
High-performance silicon-based multicomponent battery anodes produced via synergistic coupling of multifunctional coating layers
Author
Lee, Jung-InKo, YounghoonShin, MyoungsooSong, Hyun-KonChoi, Nam-SoonKim, Min GyuPark, Soojin
Issue Date
2015-07
Publisher
ROYAL SOC CHEMISTRY
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.8, no.7, pp.2075 - 2084
Abstract
Nanostructured Si-based materials are key building blocks for next-generation energy storage devices. To meet the requirements of practical energy storage devices, Si-based materials should exhibit high-power, low volume change, and high tap density. So far, there have been no reliable materials reported satisfying all of these requirements. Here, we report a novel Si-based multicomponent design, in which the Si core is covered with multifunctional shell layers. The synergistic coupling of Si with the multifunctional shell provides vital clues for satisfying all Si anode requirements for practical batteries. The Si-based multicomponent anode delivers a high capacity of similar to 1000 mA h g(-1), a highly stable cycling retention (similar to 65% after 1000 cycles at 1 C), an excellent rate capability (similar to 800 mA h g(-1) at 10 C), and a remarkably suppressed volume expansion (12% after 100 cycles). Our synthetic process is simple, low-cost, and safe, facilitating new methods for developing electrode materials for practical energy storage.
URI
https://scholarworks.unist.ac.kr/handle/201301/17002
URL
http://pubs.rsc.org/en/Content/ArticleLanding/2015/EE/C5EE01493J#!divAbstract
DOI
10.1039/c5ee01493j
ISSN
1754-5692
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