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

Jung Sub Kim, Hun Gi Jung, Wonchang Choi, Haw Young Lee, Dong Jin Byun, Joong Kee Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 μm. 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.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 2014 Feb 21

Fingerprint

Nanorods
nanorods
bundles
Etching
Anodes
Silver
Lithium
anodes
lithium
silver
etching
Silicon
Ions
silicon
cells
ions
Thick films
thick films
Electrodes
electrodes

Keywords

  • Anode
  • Electroless etching
  • Metal-assisted chemical etching
  • Silicon
  • Surface modification

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

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

In: International Journal of Hydrogen Energy, 21.02.2014.

Research output: Contribution to journalArticle

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AU - Jung, Hun Gi

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AU - Lee, Haw Young

AU - Byun, Dong Jin

AU - Lee, Joong Kee

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AB - 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 μm. 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.

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