Journal
JOURNAL OF POWER SOURCES
Volume 482, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.228923
Keywords
Lithium ion batteries; Conductive supports; Tin disulfide; Hierarchical carbon composites
Funding
- Ministry of Science and Technology [MOST 107-2113-M-001-010-MY3]
- Academia Sinica [AS-SS-106-02-3]
- iMATE program in Academia Sinica
- Center of Atomic Initiative for New Materials (AI-Mat), National Taiwan University from the Featured Areas Research Center Program within Ministry of Education (MOE) in Taiwan [107L9008, 108L9008]
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This study demonstrates the lithium-ion storage behaviors of SnS2 anode material deposited on different electrode supports. The SnS2-CNT-CC electrode outperforms in cyclic performance and rate capability due to the multi-electron pathway and high surface area derived from 3D hierarchical CNT-CC electrode support.
Tin-based composites are promising anode materials for high-performance lithium-ion batteries (LIBs); however, insufficient conductivity, as well as fatal volume expansion during cycling lead to poor electrochemical reversibility and cycling stability. In this work, we demonstrate the lithium-ion storage behaviors of SnS2 anode material deposited on different electrode supports. The SnS2 grown on 3D hierarchical carbon nanotube-carbon cloth composites (SnS2-CNT-CC) shows superior capacity retention and cycle stability, compared to that on planar Mo sheets and carbon cloth. The specific capacity of SnS2 on Mo, CC, and CNT-CC is around 240, 840, and 1250 g(-1), respectively. The SnS2-CNT-CC electrode outperforms in the cyclic performance and rate capability compared to other electrode configurations due to the multi-electron pathway and high surface area derived from 3D hierarchical CNT-CC electrode support. Furthermore, a significant decrease in the charge transfer resistance is observed by utilizing 3D hierarchical CNT-CC electrode support. The use of 3D hierarchical structures as electrode support could be the best alternative to enhance the electrochemical performances for the next generation LIBs.
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