Achieving Cycling Stability in Anode of Lithium-Ion Batteries with Silicon-Embedded Titanium Oxynitride Microsphereopen access
- Authors
- Wang, Sung Eun; Kim, DoHoon; Kim, Min Ji; Kim, Jung Hyun; Kang, Yun Chan; Roh, Kwang Chul; Choi, Junghyun; Lee, Hyung Woo; Jung, Dae Soo
- Issue Date
- Jan-2023
- Publisher
- MDPI
- Keywords
- lithium-ion batteries; silicon anodes; titanium oxynitrides; spray-drying
- Citation
- NANOMATERIALS, v.13, no.1
- Journal Title
- NANOMATERIALS
- Volume
- 13
- Number
- 1
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91866
- DOI
- 10.3390/nano13010132
- ISSN
- 2079-4991
2079-4991
- Abstract
- Surface coating approaches for silicon (Si) have demonstrated potential for use as anodes in lithium-ion batteries (LIBs) to address the large volume change and low conductivity of Si. However, the practical application of these approaches remains a challenge because they do not effectively accommodate the pulverization of Si during cycling or require complex processes. Herein, Si-embedded titanium oxynitride (Si-TiON) was proposed and successfully fabricated using a spray-drying process. TiON can be uniformly coated on the Si surface via self-assembly, which can enhance the Si utilization and electrode stability. This is because TiON exhibits high mechanical strength and electrical conductivity, allowing it to act as a rigid and electrically conductive matrix. As a result, the Si-TiON electrodes delivered an initial reversible capacity of 1663 mA h g(-1) with remarkably enhanced capacity retention and rate performance.
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