Highly reversible lithiation/delithiation in indium antimonide with hybrid buffering matrix
- Authors
- Hieu, Luong Trung; So, Seongjoon; Kim, Il Tae; Hur, Jaehyun
- Issue Date
- Sep-2021
- Publisher
- WILEY
- Keywords
- anode; high-energy ball milling; indium antimonide; LIBs; titanium oxide
- Citation
- International Journal of Energy Research, v.45, no.11, pp.16145 - 16154
- Journal Title
- International Journal of Energy Research
- Volume
- 45
- Number
- 11
- Start Page
- 16145
- End Page
- 16154
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/81898
- DOI
- 10.1002/er.6848
- ISSN
- 0363-907X
- Abstract
- Sb-based intermetallic materials have been extensively studied as electrodes for lithium-ion batteries (LIBs) owing to the high discharge capacity and acceptable working voltage range. In this study, InSb nanocrystallites were homogeneously distributed and embedded into a combined matrix of amorphous carbon and rutile TiO2 by a facile two-time ball-milling process. The nanostructure of the composite exhibited a favorable synergistic effect of the three components (InSb: high-capacity active material, TiO2: inorganic crystalline robust matrix, and C: carbonaceous amorphous conductive matrix), which not only supplied a buffering network to suppress the volume expansion of InSb during the Li+ ion intercalation/deintercalation process, but also enhanced the ionic/electronic conductivity of the anode material. Consequently, the InSb-TiO2-C anode delivered a long lifespan and remarkable rate performance. In addition, the anode showed a high reversible discharge capacity of 540 mAh g−1 even after 400 cycles at a high current rate of 500 mA g−1. Furthermore, the anode exhibited good capacity retention (87% at 2 A g−1 relative to the capacity at 0.1 A g−1). These results indicate the potential of InSb-TiO2-C nanocomposites for LIBs anode materials. © 2021 John Wiley & Sons Ltd.
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