Probing the Evolution of Surface Chemistry at the Silicon?Electrolyte Interphase via In Situ Surface-Enhanced Raman Spectroscopy [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 333.79 Energy
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2019
• Mô tả vật lý: Size: p. 286-291 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 256116
• Chủ đề: 1. 25 energy storage; 2. 30 direct energy conversion; 3. Alkyl carboxylates; 4. In-situ surface-enhanced raman spectroscopy; 5. Reversible evolution of silicon; 6. Sers; 7. Siei; 8. Silicon-electrolyte interphase

Tóm tắt

We present a novel spectroscopic technique for in situ Raman microscopy studies of battery electrodes. By creating nanostructures on a copper mesh current collector, we were able to utilize surface-enhanced Raman spectroscopy (SERS) to monitor the evolution of the silicon anode-electrolyte interphase. We report the spectra show reversible Si peak intensity changes upon lithiation and delithiation. Moreover, an alkyl carboxylate species, lithium propionate, was detected as a significant SiEI component. Our experimental setup showed reproducible and stable performance over multiple cycles in terms of both electrochemistry and spectroscopy.