Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-29T07:35:50.890Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis and Characterization of Empty Silicon Clathrates for Anode Applications in Li-ion Batteries

Published online by Cambridge University Press:  09 June 2016

Kwai S. Chan ,
Michael A. Miller ,
Carol Ellis-Terrell  and
Candace K. Chan
Kwai S. Chan*
Affiliation:
Southwest Research Institute® , 6220 Culebra Road, San Antonio, TX 78238-5166, U.S.A.
Michael A. Miller
Affiliation:
Southwest Research Institute® , 6220 Culebra Road, San Antonio, TX 78238-5166, U.S.A.
Carol Ellis-Terrell
Affiliation:
Southwest Research Institute® , 6220 Culebra Road, San Antonio, TX 78238-5166, U.S.A.
Candace K. Chan
Affiliation:
Arizona State University, 501 E. Tyler Mall, ECG 301, Tempe, AZ 85287-8706, U.S.A.
*
*(Email: kchan@swri.org)
Get access

Abstract

Several processing methods were developed and evaluated for synthesizing empty silicon clathrates. A solution synthesis method based on the Hofmann-elimination oxidation reaction was successfully utilized to produce 20 mg of empty Si46. Half-cells using the Si46 electrodes were successfully cycled for 1000 cycles at rate of 5.3C. The capacity of the Si46 electrode in long-term tests was 675 mAh/g at the 4th cycle, but increased to 809 mAh/g at 50 cycles. The corresponding Coulombic efficiency was better than 99%. The capacity dropped from 809 to 553 mAh/g after 1000 cycles while maintaining a 99% Coulombic efficiency. In comparison, a Ba8Al8Si38 electrode could be cycled for about 200 cycles with a lower capacity and Coulombic efficiency. Potential applications of empty silicon clathrates as anode materials in Li-ion batteries are discussed.

Keywords

clathratesenergy storagechemical synthesis
Type
Articles
Information
MRS Advances , Volume 1 , Issue 45: Energy and Environment , 2016 , pp. 3043 - 3048
Copyright
Copyright © Materials Research Society 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Chan, K. S. and Miller, M. A., Anodes—Synthesis and Characterization of Silicon Clathrates for Anode Applications in Lithium-Ion Batteries, Energy Storage R&D, FY2014 Final Report, Southwest Research Institute, 2014.Google Scholar
Peng, X., Wei, Q., Li, Y., and Chan, C. K., J. Phys. Chem. C, 119, 28247–28257 (2016).Google Scholar
Li, Y., Raghavan, R., Wagner, N. A., Davidowksi, S. K., Baggetto, L., Zhao, R., Cheng, Q., Yarger, J. L., Veith, G. M., Ellis-Terrell, C., Miller, M. A., Chan, K. S., and Chan, C. K., Advanced Science, 2015, 1500057. DOI: 10.1002/advs.201500057 CrossRefGoogle Scholar
Guloy, A. M., Ramlau, R., Tang, Z., Schnelle, W., Baitinger, M., and Grin, Y., Nature, 443, 320–323 (2006). DOI: 10.1038/nature05145 Google Scholar