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Chen S, Shen L, van Aken PA, et al. Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries. Adv Mater. 2017;29(21)doi: 10.1002/adma.201605650.
Chen, S., Shen, L., van Aken, P. A., Maier, J., & Yu, Y. (2017). Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries. Advanced materials (Deerfield Beach, Fla.), 29(21), . https://doi.org/10.1002/adma.201605650
Chen, Shuangqiang, et al. "Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries." Advanced materials (Deerfield Beach, Fla.) vol. 29,21 (2017). doi: https://doi.org/10.1002/adma.201605650
Chen S, Shen L, van Aken PA, Maier J, Yu Y. Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries. Adv Mater. 2017 Jun;29(21). doi: 10.1002/adma.201605650. Epub 2017 Mar 15. PMID: 28295665.
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Adv Mater. 2017 Jun;29(21). doi: 10.1002/adma.201605650. Epub 2017 Mar 15.

Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries.

Advanced materials (Deerfield Beach, Fla.)

Shuangqiang Chen, Laifa Shen, Peter A van Aken, Joachim Maier, Yan Yu

Affiliations

  1. Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany.
  2. Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
  3. State Key Laboratory of Fire Science (SKLFS), University of Science and Technology of China, Hefei, Anhui, 230026, China.

PMID: 28295665 DOI: 10.1002/adma.201605650

Abstract

To address the challenge of huge volume change and unstable solid electrolyte interface (SEI) of silicon in cycles, causing severe pulverization, this paper proposes a "double-shell" concept. This concept is designed to perform dual functions on encapsulating volume change of silicon and stabilizing SEI layer in cycles using double carbon shells. Double carbon shells coated Si nanoparticles (DCS-Si) are prepared. Inner carbon shell provides finite inner voids to allow large volume changes of Si nanoparticles inside of inner carbon shell, while static outer shell facilitates the formation of stable SEI. Most importantly, intershell spaces are preserved to buffer volume changes and alleviate mechanical stress from inner carbon shell. DCS-Si electrodes display a high rechargeable specific capacity of 1802 mAh g

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: chemical vapor deposition; double-shell concepts; full cell; lithium ion batteries; silicon anodes

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