期刊
MATERIALS
卷 14, 期 22, 页码 -出版社
MDPI
DOI: 10.3390/ma14226912
关键词
lithium-ion battery; Si alloy; anode materials; real-time monitoring; lithiation
类别
资金
- National Research Foundation (NRF) of Korea [NRF-2021R1A2C101108011, NRF-2020R1I1A3074134]
- Korea Basic Science Institute (National Research Facilities and Equipment Center) - Ministry of Education [2020R1A6C101A184]
- Regional Innovation Strategy (RIS) program through the NRF - Ministry of Education [MOE-1345341782]
- National Research Foundation of Korea [2020R1A6C101A184] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The study optimized the composition of a Si-Ti-Al alloy to achieve excellent electrochemical performance, with enhanced mechanical stability compared to pure silicon material.
The development of novel anode materials for high energy density is required. Alloying Si with other metals is a promising approach to utilize the high capacity of Si. In this work, we optimized the composition of a Si-Ti-Al ternary alloy to achieve excellent electrochemical performance in terms of capacity, cyclability, and rate capability. The detailed internal structures of the alloys were characterized through their atomic compositions and diffraction patterns. The lithiation process of the alloy was monitored using real-time scanning electron microscopy, revealing that the mechanical stability of the optimized alloy was strongly enhanced compared to that of the pure silicon material.
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