114學年材料所-第七週 專題研討課程 演講公告 (114年10月23日)
2025.10.20
題目:
鋰離子電池矽基負極的整合式設計與階層化結構以提升效率及延長壽命
Integrative Design and Hierarchical Structuring of Silicon Anodes for Durable and High-Efficiency Lithium-Ion Batteries
演講者 : 蘇育陞(Yu-Sheng Su)
現職 : 國立陽明交通大學 國際半導體產業學院 副教授
時間: 114年 10月 23日(四) 3:20~4:00 pm
地點: 鋼構區(3F)共同教室A1302演講廳
演講摘要:
Silicon (Si) has long been regarded as one of the most promising anode materials for next-generation lithium-ion batteries due to its ultrahigh theoretical capacity. Yet, its practical application remains challenging, primarily because of severe volume expansion, unstable solid electrolyte interphases (SEI), and low initial Coulombic efficiency (ICE). In this talk, I will share our recent progress in tackling these bottlenecks through a combination of hierarchical material structuring, scalable synthesis, and process integration.
We first demonstrate cost-effective routes for silicon nanostructuring, including cooling-controlled solid–liquid–solid (SLS) nanowire growth and embedding Si within conductive 3D frameworks such as CNTs, rGO, and Ni foam. Surface/interface engineering strategies—such as graphene wrapping, double-shell coatings, and alloy-derived porous architectures—further improve mechanical robustness and SEI stability. Beyond materials, performance enhancement is achieved through optimized electrolytes, green graphene transfer methods, and advanced prelithiation strategies (e.g., stabilized lithium powder and biphenyl-based chemical prelithiation).
Finally, we will highlight the importance of electrochemical protocols, including voltage windows, state-of-charge (SoC) control, and cycling schemes, in mitigating the Coulombic efficiency trough. Together, these results show how integrative material–process–electrochemical engineering can unlock durable and high-efficiency Si-based anodes for practical battery applications.
鋰離子電池矽基負極的整合式設計與階層化結構以提升效率及延長壽命
Integrative Design and Hierarchical Structuring of Silicon Anodes for Durable and High-Efficiency Lithium-Ion Batteries
演講者 : 蘇育陞(Yu-Sheng Su)
現職 : 國立陽明交通大學 國際半導體產業學院 副教授
時間: 114年 10月 23日(四) 3:20~4:00 pm
地點: 鋼構區(3F)共同教室A1302演講廳
演講摘要:
Silicon (Si) has long been regarded as one of the most promising anode materials for next-generation lithium-ion batteries due to its ultrahigh theoretical capacity. Yet, its practical application remains challenging, primarily because of severe volume expansion, unstable solid electrolyte interphases (SEI), and low initial Coulombic efficiency (ICE). In this talk, I will share our recent progress in tackling these bottlenecks through a combination of hierarchical material structuring, scalable synthesis, and process integration.
We first demonstrate cost-effective routes for silicon nanostructuring, including cooling-controlled solid–liquid–solid (SLS) nanowire growth and embedding Si within conductive 3D frameworks such as CNTs, rGO, and Ni foam. Surface/interface engineering strategies—such as graphene wrapping, double-shell coatings, and alloy-derived porous architectures—further improve mechanical robustness and SEI stability. Beyond materials, performance enhancement is achieved through optimized electrolytes, green graphene transfer methods, and advanced prelithiation strategies (e.g., stabilized lithium powder and biphenyl-based chemical prelithiation).
Finally, we will highlight the importance of electrochemical protocols, including voltage windows, state-of-charge (SoC) control, and cycling schemes, in mitigating the Coulombic efficiency trough. Together, these results show how integrative material–process–electrochemical engineering can unlock durable and high-efficiency Si-based anodes for practical battery applications.