Presentation Information

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-E202-5]Microstructure Optimization and Battery Properties of Porous Silicon Nanowire Anodes via Wafer Resistivity Control

〇(M2)Soma Shirai¹, Shinya Kato¹ (1.Nagoya Inst. Tech.)

Keywords:

lithium ion battery,silicon anode,silicon nanowire

In this study, to improve the cycling performance of porous silicon nanowire (PSiNW) anodes prepared via the MACE method, we investigated the effects of the starting n-type Si wafer resistivity on the microstructure and battery properties. Structural characterization of the fabricated PSiNWs using TEM and gas adsorption measurements revealed that lower wafer resistivity promotes lateral etching, leading to the formation of a high-density porous structure. We demonstrated that this structural change accommodates stress, thereby enhancing the cycling stability.

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