Utilizing SnO2 Encapsulated within a Freestanding Structure of N-Doped Carbon Nanofibers as the Anode for High-Performance Lithium-Ion Batteries 


Vol. 30,  No. 3, pp. 258-266, Sep.  2024
10.7464/ksct.2024.30.3.258


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  Abstract

Rechargeable Li-SnO2 batteries suffer from issues such as poor electronic/ionic conductivity and huge volume changes. In order to overcome these inherent limitations, this study designed a cell with a unique hierarchical structure, denoted as SnO2@PCNF. The SnO2@PCNF cell design incorporates in-situ generated SnO2 nanoparticles strategically positioned within N-doped porous carbon nanofibers (PCNF). The in-situ generated SnO2 nanoparticles can alleviate strains during cycling and shorten the pathway for the ions and electrons, improving the utilization of active materials. Moreover, the N-doped PCNF establishes a continuously conductive network to further increase the electrical conductivity and also buffers the significant volume changes that occur during charging and discharging. The resulting SnO2@PCNF cell exhibits outstanding electrochemical performance and stable cycling characteristics. Notably, a reversible capacity of 520 mAh g-1 was achieved after 100 cycles at 70 mA g-1. Even under a higher current density of 1 A g-1, the cell maintained a capacity retention of 393 mAh g-1 after 1,000 cycles. These results highlight the SnO2@PCNF cell’s exceptional cycling stability and superior rate capability.

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  Cite this article

[IEEE Style]

Y. Liu, J. Heo, D. Baek, M. Li, A. Bak, P. Raghavan, J. Kim, J. Ahn, "Utilizing SnO2 Encapsulated within a Freestanding Structure of N-Doped Carbon Nanofibers as the Anode for High-Performance Lithium-Ion Batteries," Clean Technology, vol. 30, no. 3, pp. 258-266, 2024. DOI: 10.7464/ksct.2024.30.3.258.

[ACM Style]

Ying Liu, Jungwon Heo, Dong-Ho Baek, Mingxu Li, Ayeong Bak, Prasanth Raghavan, Jae-Kwang Kim, and Jou-Hyeon Ahn. 2024. Utilizing SnO2 Encapsulated within a Freestanding Structure of N-Doped Carbon Nanofibers as the Anode for High-Performance Lithium-Ion Batteries. Clean Technology, 30, 3, (2024), 258-266. DOI: 10.7464/ksct.2024.30.3.258.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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