Ultra-long cycle life of flexible Sn anode using DME electrolyte
- Sadan, Milan K.; Kim, Huihun; Kim, Changhyeon; Cho, Gyu-Bong; Cho, Kwon-Koo; Ahn, Jou-Hyeon; Ahn, Hyo-Jun
- Issue Date
- ELSEVIER SCIENCE SA
- Sodium-ion batteries; Tin anode; Flexible anode; Full cell; Ether electrolyte
- JOURNAL OF ALLOYS AND COMPOUNDS, v.871
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Sodium-ion batteries (SIBs) are highly anticipated energy storage devices due to the low-cost, widely available resources, and similar electrochemical performances with lithium-ion batteries. Even though excellent performances are demonstrated for SIB cathodes, the SIB anodes still need improvement to meet the commercial standards. Tin (Sn) anode is a popular anode that has high prospects but the previous reports show unsatisfactory electrochemical results. Here we demonstrate the excellent electrochemical performance of a flexible Sn anode for SIBs in DME electrolyte for the first time. The spherical Sn particles are embedded on carbon fibers by the facile electrospinning method. The Sn anode delivered a capacity of 661 mAh g(-1) at 0.5 C. Also, the Sn anode delivered exceptional cycling performance up to 30,000 cycles with a negligible capacity degradation of 0.002% per cycle at 25 C. Moreover, a full cell with freestanding Sn anode was assembled for the first time by coupling with Na3V2(PO4)(3) delivers a maximum energy density of 114 Wh kg(-1) and a power density of 3256 W kg(-1) based on the mass of total active materials demonstrating excellent prospects. (C) 2021 Elsevier B.V. All rights reserved.
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- 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
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