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https://doi.org/10.3938/NPSM.66.140
Nanostructured Silicon Anodes Fabricated by Using Magnesiothermic Reduction for Lithium-ion Batteries
New Physics: Sae Mulli 2016; 66: 140~144
Published online February 29, 2016;  https://doi.org/10.3938/NPSM.66.140
© 2016 New Physics: Sae Mulli.

Hayeon WON, Jinsik JU, Do Hyung KIM*

Nano Applied Physics Laboratory (NAPL), Department of Physics, Kyungpook National University, Daegu 41566, Korea
Correspondence to: kimdh@knu.ac.kr
Received December 14, 2015; Revised January 19, 2016; Accepted January 19, 2016.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Nanostructured silicon with porous structures has been prepared by magnesiothermically reducing diatomaceous earth. The reduced silicon was used as an anode material for lithium-ion batteries. Cyclic voltammetry (CV) of the silicon anodes showed the formation of a solid-electrolyte interphase (SEI) layer at 0.7 V, insertion of lithium ions to the silicon anode at 0.17 V, and delithiation from the silicon anode at 0.38 and 0.52 V. The average capacity of the nanostructured silicon was 1687 mAh/g. The magnesiothermically-reduced silicon with porous structures should be an efficient anode material for lithium-ion batteries.
PACS numbers: 88.80.F-, 61.43.Gt, 61.46.-w
Keywords: Lithium ion battery, Diatomite, Magnesiothermic reduction


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