Nanostructured silicon/silicide/carbon composite anodes with controllable voids for Li-ion batteries

Inyeong Kang; Juyoung Jang; Moon Soo Kim; Jin Woo Park; Jae Hun Kim; Young Whan Cho

doi:10.1016/j.matdes.2017.02.018

Nanostructured silicon/silicide/carbon composite anodes with controllable voids for Li-ion batteries

Inyeong Kang, Juyoung Jang, Moon Soo Kim, Jin Woo Park, Jae Hun Kim, Young Whan Cho

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Three-dimensional (3D) carbon-network-supported Si/silicide nanocomposite anodes with controllable voids are prepared using ferrosilicon, NaCl, and polyfurfuryl alcohol (PFA) resin as the starting materials. Analysis of the microstructures and the phase compositions confirms the complete removal of NaCl and the consequent formation of voids supported by a glassy carbon network, residing in between the nanostructured Si/silicide composite particles. Coin-half cell tests demonstrate the significantly improved cycling performance of the Si/silicide/carbon nanocomposites compared with that of the alloy powder without controllable voids. The electrode prepared from the coated alloy with voids maintains approximately 66% of its initial capacity after 100 cycles and its Coulombic efficiency rapidly increases to 99% after several cycles.

Original language	English
Pages (from-to)	230-237
Number of pages	8
Journal	Materials and Design
Volume	120
DOIs	https://doi.org/10.1016/j.matdes.2017.02.018
Publication status	Published - 2017 Apr 15

Bibliographical note

Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea (10037919).

Publisher Copyright:
© 2017 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matdes.2017.02.018

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title = "Nanostructured silicon/silicide/carbon composite anodes with controllable voids for Li-ion batteries",

abstract = "Three-dimensional (3D) carbon-network-supported Si/silicide nanocomposite anodes with controllable voids are prepared using ferrosilicon, NaCl, and polyfurfuryl alcohol (PFA) resin as the starting materials. Analysis of the microstructures and the phase compositions confirms the complete removal of NaCl and the consequent formation of voids supported by a glassy carbon network, residing in between the nanostructured Si/silicide composite particles. Coin-half cell tests demonstrate the significantly improved cycling performance of the Si/silicide/carbon nanocomposites compared with that of the alloy powder without controllable voids. The electrode prepared from the coated alloy with voids maintains approximately 66% of its initial capacity after 100 cycles and its Coulombic efficiency rapidly increases to 99% after several cycles.",

author = "Inyeong Kang and Juyoung Jang and Kim, {Moon Soo} and Park, {Jin Woo} and Kim, {Jae Hun} and Cho, {Young Whan}",

note = "Funding Information: This research was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea (10037919). Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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doi = "10.1016/j.matdes.2017.02.018",

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AU - Kang, Inyeong

AU - Jang, Juyoung

AU - Kim, Moon Soo

AU - Park, Jin Woo

AU - Kim, Jae Hun

AU - Cho, Young Whan

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea (10037919). Publisher Copyright: © 2017 Elsevier Ltd

PY - 2017/4/15

Y1 - 2017/4/15

N2 - Three-dimensional (3D) carbon-network-supported Si/silicide nanocomposite anodes with controllable voids are prepared using ferrosilicon, NaCl, and polyfurfuryl alcohol (PFA) resin as the starting materials. Analysis of the microstructures and the phase compositions confirms the complete removal of NaCl and the consequent formation of voids supported by a glassy carbon network, residing in between the nanostructured Si/silicide composite particles. Coin-half cell tests demonstrate the significantly improved cycling performance of the Si/silicide/carbon nanocomposites compared with that of the alloy powder without controllable voids. The electrode prepared from the coated alloy with voids maintains approximately 66% of its initial capacity after 100 cycles and its Coulombic efficiency rapidly increases to 99% after several cycles.

AB - Three-dimensional (3D) carbon-network-supported Si/silicide nanocomposite anodes with controllable voids are prepared using ferrosilicon, NaCl, and polyfurfuryl alcohol (PFA) resin as the starting materials. Analysis of the microstructures and the phase compositions confirms the complete removal of NaCl and the consequent formation of voids supported by a glassy carbon network, residing in between the nanostructured Si/silicide composite particles. Coin-half cell tests demonstrate the significantly improved cycling performance of the Si/silicide/carbon nanocomposites compared with that of the alloy powder without controllable voids. The electrode prepared from the coated alloy with voids maintains approximately 66% of its initial capacity after 100 cycles and its Coulombic efficiency rapidly increases to 99% after several cycles.

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JF - International Journal of Materials in Engineering Applications

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Nanostructured silicon/silicide/carbon composite anodes with controllable voids for Li-ion batteries

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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