Bundle-type silicon nanorod anodes produced by electroless etching using silver ions and their electrochemical characteristics in lithium ion cells
- Authors
- Kim, Jung Sub; Jung, Hun-Gi; Choi, Wonchang; Lee, Haw Young; Byun, Dongjin; Lee, 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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