Type I Clathrates as Novel Silicon Anodes

An Electrochemical and Structural Investigation

Ying Li, Rahul Raghavan, Nicholas A. Wagner, Stephen K. Davidowski, Loïc Baggetto, Ran Zhao, Qian Cheng, Jeffery L. Yarger, Gabriel M. Veith, Carol Ellis-Terrell, Michael A. Miller, Kwai S. Chan, Candace Chan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Silicon clathrates contain cage-like structures that can encapsulate various guest atoms or molecules. An electrochemical evaluation of type I silicon clathrates based on Ba8AlySi46−y as the anode material for lithium-ion batteries is presented here. Postcycling characterization with nuclear magnetic resonance and X-ray diffraction shows no discernible structural or volume changes even after electrochemical insertion of 44 Li (≈1 Li/Si) into the clathrate structure. The observed properties are in stark contrast with lithiation of other silicon anodes, which become amorphous and suffer from large volume changes. The electrochemical reactions are proposed to occur as single phase reactions at approximately 0.2 and 0.4 V versus Li/Li+ during lithiation and delithiation, respectively, distinct from diamond cubic or amorphous silicon anodes. Reversible capacities as high as 499 mAh g−1 at a 5 mA g−1 rate were observed for silicon clathrate with composition Ba8Al8.54Si37.46, corresponding to ≈1.18 Li/Si. These results show that silicon clathrates could be promising durable anodes for lithium-ion batteries.

Original languageEnglish
Article number1500057
JournalAdvanced Science
Volume2
Issue number6
DOIs
Publication statusPublished - 2015

Fingerprint

clathrates
Silicon
Anodes
Electrodes
anodes
silicon
Lithium
electric batteries
lithium
Diamond
Ions
Amorphous silicon
Diamonds
X-Ray Diffraction
amorphous silicon
Nuclear magnetic resonance
insertion
ions
Magnetic Resonance Spectroscopy
X ray diffraction

Keywords

  • anode
  • Li-ion battery
  • silicon
  • ternary type I clathrate

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Medicine (miscellaneous)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)

Cite this

Li, Y., Raghavan, R., Wagner, N. A., Davidowski, S. K., Baggetto, L., Zhao, R., ... Chan, C. (2015). Type I Clathrates as Novel Silicon Anodes: An Electrochemical and Structural Investigation. Advanced Science, 2(6), [1500057]. https://doi.org/10.1002/advs.201500057

Type I Clathrates as Novel Silicon Anodes : An Electrochemical and Structural Investigation. / Li, Ying; Raghavan, Rahul; Wagner, Nicholas A.; Davidowski, Stephen K.; Baggetto, Loïc; Zhao, Ran; Cheng, Qian; Yarger, Jeffery L.; Veith, Gabriel M.; Ellis-Terrell, Carol; Miller, Michael A.; Chan, Kwai S.; Chan, Candace.

In: Advanced Science, Vol. 2, No. 6, 1500057, 2015.

Research output: Contribution to journalArticle

Li, Y, Raghavan, R, Wagner, NA, Davidowski, SK, Baggetto, L, Zhao, R, Cheng, Q, Yarger, JL, Veith, GM, Ellis-Terrell, C, Miller, MA, Chan, KS & Chan, C 2015, 'Type I Clathrates as Novel Silicon Anodes: An Electrochemical and Structural Investigation', Advanced Science, vol. 2, no. 6, 1500057. https://doi.org/10.1002/advs.201500057
Li, Ying ; Raghavan, Rahul ; Wagner, Nicholas A. ; Davidowski, Stephen K. ; Baggetto, Loïc ; Zhao, Ran ; Cheng, Qian ; Yarger, Jeffery L. ; Veith, Gabriel M. ; Ellis-Terrell, Carol ; Miller, Michael A. ; Chan, Kwai S. ; Chan, Candace. / Type I Clathrates as Novel Silicon Anodes : An Electrochemical and Structural Investigation. In: Advanced Science. 2015 ; Vol. 2, No. 6.
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