Paper 13351-91
Paper 13351-91
Prolonging calendar life of silicon negative electrode: advanced femtosecond laser-induced transitional metal alloying with amorphous silicon for high-performance Li-ion batteries
28 January 2025 • 6:00 PM - 8:00 PM PST | Moscone West, Room 2003 (Level 2)
Abstract
This study explores femtosecond laser-induced alloying of copper with amorphous silicon to enhance the stability of silicon negative electrodes in lithium-ion batteries. By addressing unstable solid electrolyte interphase formation, fs laser alloying significantly improves SEI formation and reduces parasitic reactions. Electrochemical tests confirm that fs laser surface doped Si-Cu anodes outperform pure Si and co-deposited Si-Cu alloys. This laser-based techniques technique shows great promise for advancing silicon as the next-generation anode material for LIBs.
Presenter
Yueran Gu
Lawrence Berkeley National Lab. (United States), Univ. of California, Berkeley (United States)
Yueran Gu is a fourth-year PhD candidate in Mechanical Engineering with a concentration in Energy Science and a minor in Material Science Engineering at the University of California, Berkeley. Working under the guidance of Dr. Vassilia Zorba in the Laser Technology Group at Lawrence Berkeley National Laboratory, Gu has focused on the development and application of ultrafast laser technologies in Li-ion batteries.
During her time at UCB and LBNL, Gu has been dedicated to improving the stability of silicon anodes in Li-ion batteries. Her research focuses on two main directions: developing new materials and creating innovative electrode architectures by leveraging modern laser technologies. Her work aims to enhance the performance and stability of Li-ion batteries, which are critical for the advancement of energy storage solutions.