Bundle-type silicon nanorod anodes produced by electroless etching using silver ions and their electrochemical characteristics in lithium ion cells

Authors
Kim, Jung SubJung, Hun-GiChoi, WonchangLee, Haw YoungByun, DongjinLee, Joong Kee
Issue Date
2014-12-12
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.39, no.36, pp.21420 - 21428
Abstract
This study investigates bundle-type silicon nanorods (BSNR) that are aimed at improving the discharge capacity and life cycle characteristics of secondary cells, by controlling the shape and etching depth of silicon thick-films produced by electroless etching. The prepared BSNR structure is composed of a columnar bundle, having a diameter of 100 nm and lengths of 1.5 and 3.5 mu m. The etching depths of the nanorods have a significant effect on the electrochemical performance characteristics, including the capacity fading and coulombic efficiency. Using a BSNR electrode therefore allows for an anode with a high capacity and efficiency in lithium ion cells, and can help overcome the issues associated with conventional silicon thick-films. Furthermore, as a result of its unique self-relaxant structure, electrode deterioration is improved through mitigation of the volume change. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Keywords
NEGATIVE ELECTRODE; NANOWIRES; MECHANISM; ARRAYS; NEGATIVE ELECTRODE; NANOWIRES; MECHANISM; ARRAYS; Silicon; Electroless etching; Metal-assisted chemical etching; Anode; Surface modification
ISSN
0360-3199
URI
https://pubs.kist.re.kr/handle/201004/125994
DOI
10.1016/j.ijhydene.2014.02.007
Appears in Collections:
KIST Article > 2014
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