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Cited 4 time in webofscience Cited 7 time in scopus
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Development and Evaluation of Sn Foil Anode for Sodium-Ion Batteries

Authors
Kim, ChanghyeonKim, HuihunSadan, Milan K.Jeon, MinyeongCho, GyubongAhn, JouhyeonKim, KiwonCho, KwonkooAhn, Hyojun
Issue Date
Dec-2021
Publisher
WILEY-V C H VERLAG GMBH
Keywords
charge-discharge cycling; metal foil anodes; sodium-ion batteries; tin foils; volume expansion
Citation
SMALL, v.17, no.50
Indexed
SCIE
SCOPUS
Journal Title
SMALL
Volume
17
Number
50
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/2895
DOI
10.1002/smll.202102618
ISSN
1613-6810
Abstract
Metal foil electrodes are simple to prepare and have a high active material loading, making them well suited for the fabrication of inexpensive high-energy-density batteries. Herein, Sn metal foil is used as a binder- and conductive additive-free anode for sodium-ion batteries, achieving a high reversible specific capacity of 692 mAh g(-1) and coulombic efficiency of 99% after 100 cycles at a rate of 0.1 C. During the first discharge process, the anode undergoes area expansion. It then splits into multiple parts during the first-charge process. Upon cycling, the separated parts reconnect and form a single piece with a porous and robust coral structure owing to the self-healing nature of the anode. A full cell with a Sn foil anode and Na3V2(PO4)(3) cathode shows a stable cycle life of 100 mAh g(-1) for 300 cycles. Thus, the cracking or pulverization of the Sn anode is not the principal origin of poor cycling properties. The adopted strategy will promote the development and commercialization of high-capacity metal foil anodes that undergo volume changes during charge/discharge cycling.
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