Department of Materials Science and Engineering, Kookmin Univ.
We propose a method to enhance the durability of anodes made from a Sn -TiO2 composite supported by 3D graphene structure. This mechanism involves combining the high lithium storage capacity of Sn with TiO2, while a 3D graphene network provides support and electrical conductivity. This structure minimizes physical deformation during cycles through a dual buffering structure, delivering high capacity retention and long cycle life. [1]
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Also, we fabricate silicon-based anode that is both printable and free-standing, eliminating the need for a conventional current collector. This electrode design mitigates the issue of silicon’s volume expansion by hollow structure, reduces the overall weight and complexity of the electrodes, improves energy density, ultimately leading to improved battery performance. [2] |
Relevant Publication
1 |
Ryu, J.; Kim, H.; Kang, J.; Bark, H.; Park, S.*; Lee, H.*, Dual Buffering Inverse Design of Three-Dimensional Graphene-Supported Sn-TiO2 Anodes for Durable Lithium-Ion Batteries. Small 2020, 16 (46), e2004861.
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2 | Je, M.; Ham, M.; Kim, S.; Park, Y.; Park, S.*, & Lee, H.* ,Printable and Free-Standing Silicon-Based Anode for Current Collector-Free Lithium-Ion Batteries. ACS Applied Materials & Interfaces 2023, 15(44), 51215-51224. |