Effects of Solute鈥揝olvent Hydrogen Bonding on Nonaqueous Electrolyte Structure
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- 作者：Kjell W. Schroder ; Anthony G. Dylla ; Logan D. C. Bishop ; Elizabeth R. Kamilar ; Jennette Saunders ; Lauren J. Webb ; Keith J. Stevenson
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2015
- 出版时间：August 6, 2015
- 年：2015
- 卷：6
- 期：15
- 页码：2888-2891
- 全文大小：302K
- ISSN：1948-7185
文摘
We investigate the source of Raman background signal commonly misidentified as fluorescence in nonaqueous electrolytes via a variety of spectroscopies (Raman, fluorescence, NMR) and find evidence of hydrogen-bonding interactions. This hydrogen bonding gives rise to broadband anharmonic vibrational modes and suggests that anions play an important and underappreciated role in the structure of nonaqueous electrolytes. Controlling electrolyte structure has important applications in advancing in operando spectroscopy measurements as well as understanding the stability of high concentration electrolytes for next-generation electrochemical energy storage devices.