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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Challenges in Accommodating Volume Change of Si Anodes for Li-Ion Batteries

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Title
Challenges in Accommodating Volume Change of Si Anodes for Li-Ion Batteries
Author
Ko, MinseongChae, SujongCho, Jaephil
Issue Date
2015-11
Publisher
John Wiley and Sons Ltd
Citation
CHEMELECTROCHEM, v.2, no.11, pp.1645 - 1651
Abstract
Si has been considered as a promising alternative anode for next-generation Li-ion batteries (LIBs) because of its high theoretical energy density, relatively low working potential, and abundance in nature. However, Si anodes exhibit rapid capacity decay and an increase in the internal resistance, which are caused by the large volume changes upon Li insertion and extraction. This unfortunately limits their practical applications. Therefore, managing the total volume change remains a critical challenge for effectively alleviating the mechanical fractures and instability of solid-electrolyte-interphase products. In this regard, we review the recent progress in volume-change-accommodating Si electrodes and investigate their ingenious structures with significant improvements in the battery performance, including size-controlled materials, patterned thin films, porous structures, shape-preserving shell designs, and graphene composites. These representative approaches potentially overcome the large morphologic changes in the volume of Si anodes by securing the strain relaxation and structural integrity in the entire electrode. Finally, we propose perspectives and future challenges to realize the practical application of Si anodes in LIB systems.
URI
https://scholarworks.unist.ac.kr/handle/201301/17920
URL
http://onlinelibrary.wiley.com/doi/10.1002/celc.201500254/abstract?systemMessage=Wiley+Online+Library+will+have+be+unavailable+on+Saturday+5th+December+from+10%3A00-14%3A00+GMT+%2F+05%3A00-09%3A00+EST+%2F+18%3A00-22%3A00+SGT+for+essential+maintenance.+Apologies+for+the+inconvenience.
DOI
10.1002/celc.201500254
ISSN
2196-0216
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ECHE_Journal Papers
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