Si/Ge double-layered nanotube array as a lithium ion battery anode

Taeseup Song, Huanyu Cheng, Heechae Choi, Jin Hyon Lee, Hyungkyu Han, Dong Hyun Lee, Dong Su Yoo, Moon Seok Kwon, Jae Man Choi, Seok Gwang Doo, Hyuk Chang, Jianliang Xiao, Yonggang Huang, Won Il Park, Yong Chae Chung, Hansu Kim*, John A. Rogers, Ungyu Paik

*Corresponding author for this work

Research output: Contribution to journalArticle

178 Citations (Scopus)

Abstract

Figure Persented: Problems related to tremendous volume changes associated with cycling and the low electron conductivity and ion diffusivity of Si represent major obstacles to its use in high-capacity anodes for lithium ion batteries. We have developed a group IVA based nanotube heterostructure array, consisting of a high-capacity Si inner layer and a highly conductive Ge outer layer, to yield both favorable mechanics and kinetics in battery applications. This type of Si/Ge double-layered nanotube array electrode exhibits improved electrochemical performances over the analogous homogeneous Si system, including stable capacity retention (85% after 50 cycles) and doubled capacity at a 3C rate. These results stem from reduced maximum hoop strain in the nanotubes, supported by theoretical mechanics modeling, and lowered activation energy barrier for Li diffusion. This electrode technology creates opportunities in the development of group IVA nanotube heterostructures for next generation lithium ion batteries.

Original languageEnglish (US)
Pages (from-to)303-309
Number of pages7
JournalACS Nano
Volume6
Issue number1
DOIs
StatePublished - Jan 24 2012

Fingerprint

Nanotubes
electric batteries
nanotubes
Anodes
anodes
lithium
Heterojunctions
Mechanics
ions
hoops
cycles
Electrodes
electrodes
Energy barriers
stems
diffusivity
Activation energy
Ions
activation energy
conductivity

Keywords

  • anode
  • germanium
  • lithium ion batteries
  • nanotubes
  • silicon

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Song, T., Cheng, H., Choi, H., Lee, J. H., Han, H., Lee, D. H., ... Paik, U. (2012). Si/Ge double-layered nanotube array as a lithium ion battery anode. ACS Nano, 6(1), 303-309. https://doi.org/10.1021/nn203572n
Song, Taeseup ; Cheng, Huanyu ; Choi, Heechae ; Lee, Jin Hyon ; Han, Hyungkyu ; Lee, Dong Hyun ; Yoo, Dong Su ; Kwon, Moon Seok ; Choi, Jae Man ; Doo, Seok Gwang ; Chang, Hyuk ; Xiao, Jianliang ; Huang, Yonggang ; Park, Won Il ; Chung, Yong Chae ; Kim, Hansu ; Rogers, John A. ; Paik, Ungyu. / Si/Ge double-layered nanotube array as a lithium ion battery anode. In: ACS Nano. 2012 ; Vol. 6, No. 1. pp. 303-309.
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Song, T, Cheng, H, Choi, H, Lee, JH, Han, H, Lee, DH, Yoo, DS, Kwon, MS, Choi, JM, Doo, SG, Chang, H, Xiao, J, Huang, Y, Park, WI, Chung, YC, Kim, H, Rogers, JA & Paik, U 2012, 'Si/Ge double-layered nanotube array as a lithium ion battery anode', ACS Nano, vol. 6, no. 1, pp. 303-309. https://doi.org/10.1021/nn203572n

Si/Ge double-layered nanotube array as a lithium ion battery anode. / Song, Taeseup; Cheng, Huanyu; Choi, Heechae; Lee, Jin Hyon; Han, Hyungkyu; Lee, Dong Hyun; Yoo, Dong Su; Kwon, Moon Seok; Choi, Jae Man; Doo, Seok Gwang; Chang, Hyuk; Xiao, Jianliang; Huang, Yonggang; Park, Won Il; Chung, Yong Chae; Kim, Hansu; Rogers, John A.; Paik, Ungyu.

In: ACS Nano, Vol. 6, No. 1, 24.01.2012, p. 303-309.

Research output: Contribution to journalArticle

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AU - Choi, Jae Man

AU - Doo, Seok Gwang

AU - Chang, Hyuk

AU - Xiao, Jianliang

AU - Huang, Yonggang

AU - Park, Won Il

AU - Chung, Yong Chae

AU - Kim, Hansu

AU - Rogers, John A.

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N2 - Figure Persented: Problems related to tremendous volume changes associated with cycling and the low electron conductivity and ion diffusivity of Si represent major obstacles to its use in high-capacity anodes for lithium ion batteries. We have developed a group IVA based nanotube heterostructure array, consisting of a high-capacity Si inner layer and a highly conductive Ge outer layer, to yield both favorable mechanics and kinetics in battery applications. This type of Si/Ge double-layered nanotube array electrode exhibits improved electrochemical performances over the analogous homogeneous Si system, including stable capacity retention (85% after 50 cycles) and doubled capacity at a 3C rate. These results stem from reduced maximum hoop strain in the nanotubes, supported by theoretical mechanics modeling, and lowered activation energy barrier for Li diffusion. This electrode technology creates opportunities in the development of group IVA nanotube heterostructures for next generation lithium ion batteries.

AB - Figure Persented: Problems related to tremendous volume changes associated with cycling and the low electron conductivity and ion diffusivity of Si represent major obstacles to its use in high-capacity anodes for lithium ion batteries. We have developed a group IVA based nanotube heterostructure array, consisting of a high-capacity Si inner layer and a highly conductive Ge outer layer, to yield both favorable mechanics and kinetics in battery applications. This type of Si/Ge double-layered nanotube array electrode exhibits improved electrochemical performances over the analogous homogeneous Si system, including stable capacity retention (85% after 50 cycles) and doubled capacity at a 3C rate. These results stem from reduced maximum hoop strain in the nanotubes, supported by theoretical mechanics modeling, and lowered activation energy barrier for Li diffusion. This electrode technology creates opportunities in the development of group IVA nanotube heterostructures for next generation lithium ion batteries.

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Song T, Cheng H, Choi H, Lee JH, Han H, Lee DH et al. Si/Ge double-layered nanotube array as a lithium ion battery anode. ACS Nano. 2012 Jan 24;6(1):303-309. https://doi.org/10.1021/nn203572n