A beaded-string silicon anode

Chuan Fu Sun, Khim Karki, Zheng Jia, Hongwei Liao, Yin Zhang, Teng Li, Yue Qi, John Cumings, Gary W. Rubloff, Yuhuang Wang

Research output: Research - peer-reviewArticle

  • 57 Citations

Abstract

Interfacial instability is a fundamental issue in heterostructures ranging from biomaterials to joint replacement and electronic packaging. This challenge is particularly intriguing for lithium ion battery anodes comprising silicon as the ion storage material, where ultrahigh capacity is accompanied by vast mechanical stress that threatens delamination of silicon from the current collectors at the other side of the interface. Here, we describe Si-beaded carbon nanotube (CNT) strings whose interface is controlled by chemical functionalization, producing separated amorphous Si beads threaded along mechanically robust and electrically conductive CNT. In situ transmission electron microscopy combined with atomic and continuum modeling reveal that the chemically tailored Si-C interface plays important roles in constraining the Si beads, such that they exhibit a symmetric "radial breathing" around the CNT string, remaining crack-free and electrically connected throughout lithiation-delithiation cycling. These findings provide fundamental insights in controlling nanostructured interfaces to effectively respond to demanding environments such as lithium batteries.

LanguageEnglish (US)
Pages2717-2724
Number of pages8
JournalACS Nano
Volume7
Issue number3
DOIs
StatePublished - Mar 26 2013
Externally publishedYes

Profile

anodes
strings
silicon
Carbon Nanotubes
Silicon
Anodes
Carbon nanotubes
carbon nanotubes
beads
Electronics packaging
Lithium batteries
Biocompatible Materials
Delamination
Heterojunctions
Ions
Transmission electron microscopy
Cracks
Lithium-ion batteries
Biomaterials
continuum modeling

Keywords

  • carbon nanotube
  • in situ TEM
  • interface
  • lithium ion battery
  • modeling
  • nanofabrication
  • propagation

ASJC Scopus subject areas

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

Cite this

Sun, C. F., Karki, K., Jia, Z., Liao, H., Zhang, Y., Li, T., ... Wang, Y. (2013). A beaded-string silicon anode. ACS Nano, 7(3), 2717-2724. DOI: 10.1021/nn4001512

A beaded-string silicon anode. / Sun, Chuan Fu; Karki, Khim; Jia, Zheng; Liao, Hongwei; Zhang, Yin; Li, Teng; Qi, Yue; Cumings, John; Rubloff, Gary W.; Wang, Yuhuang.

In: ACS Nano, Vol. 7, No. 3, 26.03.2013, p. 2717-2724.

Research output: Research - peer-reviewArticle

Sun, CF, Karki, K, Jia, Z, Liao, H, Zhang, Y, Li, T, Qi, Y, Cumings, J, Rubloff, GW & Wang, Y 2013, 'A beaded-string silicon anode' ACS Nano, vol 7, no. 3, pp. 2717-2724. DOI: 10.1021/nn4001512
Sun CF, Karki K, Jia Z, Liao H, Zhang Y, Li T et al. A beaded-string silicon anode. ACS Nano. 2013 Mar 26;7(3):2717-2724. Available from, DOI: 10.1021/nn4001512
Sun, Chuan Fu ; Karki, Khim ; Jia, Zheng ; Liao, Hongwei ; Zhang, Yin ; Li, Teng ; Qi, Yue ; Cumings, John ; Rubloff, Gary W. ; Wang, Yuhuang. / A beaded-string silicon anode. In: ACS Nano. 2013 ; Vol. 7, No. 3. pp. 2717-2724
@article{3d070ac744094851a68b13d2588afaf7,
title = "A beaded-string silicon anode",
abstract = "Interfacial instability is a fundamental issue in heterostructures ranging from biomaterials to joint replacement and electronic packaging. This challenge is particularly intriguing for lithium ion battery anodes comprising silicon as the ion storage material, where ultrahigh capacity is accompanied by vast mechanical stress that threatens delamination of silicon from the current collectors at the other side of the interface. Here, we describe Si-beaded carbon nanotube (CNT) strings whose interface is controlled by chemical functionalization, producing separated amorphous Si beads threaded along mechanically robust and electrically conductive CNT. In situ transmission electron microscopy combined with atomic and continuum modeling reveal that the chemically tailored Si-C interface plays important roles in constraining the Si beads, such that they exhibit a symmetric {"}radial breathing{"} around the CNT string, remaining crack-free and electrically connected throughout lithiation-delithiation cycling. These findings provide fundamental insights in controlling nanostructured interfaces to effectively respond to demanding environments such as lithium batteries.",
keywords = "carbon nanotube, in situ TEM, interface, lithium ion battery, modeling, nanofabrication, propagation",
author = "Sun, {Chuan Fu} and Khim Karki and Zheng Jia and Hongwei Liao and Yin Zhang and Teng Li and Yue Qi and John Cumings and Rubloff, {Gary W.} and Yuhuang Wang",
year = "2013",
month = "3",
doi = "10.1021/nn4001512",
volume = "7",
pages = "2717--2724",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "3",

}

TY - JOUR

T1 - A beaded-string silicon anode

AU - Sun,Chuan Fu

AU - Karki,Khim

AU - Jia,Zheng

AU - Liao,Hongwei

AU - Zhang,Yin

AU - Li,Teng

AU - Qi,Yue

AU - Cumings,John

AU - Rubloff,Gary W.

AU - Wang,Yuhuang

PY - 2013/3/26

Y1 - 2013/3/26

N2 - Interfacial instability is a fundamental issue in heterostructures ranging from biomaterials to joint replacement and electronic packaging. This challenge is particularly intriguing for lithium ion battery anodes comprising silicon as the ion storage material, where ultrahigh capacity is accompanied by vast mechanical stress that threatens delamination of silicon from the current collectors at the other side of the interface. Here, we describe Si-beaded carbon nanotube (CNT) strings whose interface is controlled by chemical functionalization, producing separated amorphous Si beads threaded along mechanically robust and electrically conductive CNT. In situ transmission electron microscopy combined with atomic and continuum modeling reveal that the chemically tailored Si-C interface plays important roles in constraining the Si beads, such that they exhibit a symmetric "radial breathing" around the CNT string, remaining crack-free and electrically connected throughout lithiation-delithiation cycling. These findings provide fundamental insights in controlling nanostructured interfaces to effectively respond to demanding environments such as lithium batteries.

AB - Interfacial instability is a fundamental issue in heterostructures ranging from biomaterials to joint replacement and electronic packaging. This challenge is particularly intriguing for lithium ion battery anodes comprising silicon as the ion storage material, where ultrahigh capacity is accompanied by vast mechanical stress that threatens delamination of silicon from the current collectors at the other side of the interface. Here, we describe Si-beaded carbon nanotube (CNT) strings whose interface is controlled by chemical functionalization, producing separated amorphous Si beads threaded along mechanically robust and electrically conductive CNT. In situ transmission electron microscopy combined with atomic and continuum modeling reveal that the chemically tailored Si-C interface plays important roles in constraining the Si beads, such that they exhibit a symmetric "radial breathing" around the CNT string, remaining crack-free and electrically connected throughout lithiation-delithiation cycling. These findings provide fundamental insights in controlling nanostructured interfaces to effectively respond to demanding environments such as lithium batteries.

KW - carbon nanotube

KW - in situ TEM

KW - interface

KW - lithium ion battery

KW - modeling

KW - nanofabrication

KW - propagation

UR - http://www.scopus.com/inward/record.url?scp=84875685125&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875685125&partnerID=8YFLogxK

U2 - 10.1021/nn4001512

DO - 10.1021/nn4001512

M3 - Article

VL - 7

SP - 2717

EP - 2724

JO - ACS Nano

T2 - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 3

ER -