113學年材料所-第七週 專題研討課程 演講公告 (113年10月24日)
2024.10.21
題目: 快速充電之鋰電池 (Fast-Charging of Lithium Batteries)
演講者: 葉哲寧
現職: 國立清華大學 材料科學工程學系 助理教授
時間: 113年10月24日(四) 下午15:10~17:00
地點: 成功大學成功校區三系館 鋼構區(3F)共同教室A1302演講廳
演講摘要:
The development of lithium-ion batteries capable of extreme fast charging (XFC) is crucial for the widespread adoption of electric vehicles. However, a significant obstacle to achieving XFC is the undesirable deposition of metallic lithium on the graphite anode, causing capacity degradation and posing a serious safety risk.
Efforts to mitigate lithium plating are essential, but characterizing this phenomenon is challenging due to lithium's sensitivity to oxygen and water, small feature sizes, and the complex morphology of porous electrodes and deposits (such as dendrites with a solid-electrolyte interphase, SEI). Consequently, fundamental questions regarding the mechanism of lithium plating and its impact on graphite remain unanswered.
This presentation will initially delve into operando studies of lithium plating, utilizing single-particle graphite nanoplatelets with well-defined geometry as a model system to investigate SEI growth and lithium plating. The insight contributes to the design of a single-component artificial SEI, enhancing the cycling performance of lithium-ion batteries at high rates. Finally, the application of oxides in lithium-ion batteries will be briefly discussed. By combining polymers with ceramic oxides and designing material structures, there is an opportunity to achieve solid electrolytes with high ionic conductivity, thereby realizing safer lithium-ion batteries.
歡迎各位撥冗參加!!
演講者: 葉哲寧
現職: 國立清華大學 材料科學工程學系 助理教授
時間: 113年10月24日(四) 下午15:10~17:00
地點: 成功大學成功校區三系館 鋼構區(3F)共同教室A1302演講廳
演講摘要:
The development of lithium-ion batteries capable of extreme fast charging (XFC) is crucial for the widespread adoption of electric vehicles. However, a significant obstacle to achieving XFC is the undesirable deposition of metallic lithium on the graphite anode, causing capacity degradation and posing a serious safety risk.
Efforts to mitigate lithium plating are essential, but characterizing this phenomenon is challenging due to lithium's sensitivity to oxygen and water, small feature sizes, and the complex morphology of porous electrodes and deposits (such as dendrites with a solid-electrolyte interphase, SEI). Consequently, fundamental questions regarding the mechanism of lithium plating and its impact on graphite remain unanswered.
This presentation will initially delve into operando studies of lithium plating, utilizing single-particle graphite nanoplatelets with well-defined geometry as a model system to investigate SEI growth and lithium plating. The insight contributes to the design of a single-component artificial SEI, enhancing the cycling performance of lithium-ion batteries at high rates. Finally, the application of oxides in lithium-ion batteries will be briefly discussed. By combining polymers with ceramic oxides and designing material structures, there is an opportunity to achieve solid electrolytes with high ionic conductivity, thereby realizing safer lithium-ion batteries.
歡迎各位撥冗參加!!