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Issue 7, 2015
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High-performance silicon-based multicomponent battery anodes produced via synergistic coupling of multifunctional coating layers

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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 ∼1000 mA h g−1, a highly stable cycling retention (∼65% after 1000 cycles at 1 C), an excellent rate capability (∼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.

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

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Supplementary files

Article information


Submitted
14 May 2015
Accepted
27 May 2015
First published
28 May 2015

This article is Open Access

Energy Environ. Sci., 2015,8, 2075-2084
Article type
Paper
Author version available

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

J. Lee, Y. Ko, M. Shin, H. Song, N. Choi, M. G. Kim and S. Park, Energy Environ. Sci., 2015, 8, 2075
DOI: 10.1039/C5EE01493J

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    [Original citation] - Published by The Royal Society of Chemistry.

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