Unveiling the Liquid Electrolyte Solvation Structure by Small Angle X-ray ScatteringClick to copy article linkArticle link copied!
- Xinyi LiuXinyi LiuDepartment of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United StatesMore by Xinyi Liu
- Lingzhe FangLingzhe FangDepartment of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United StatesMore by Lingzhe Fang
- Xingyi LyuXingyi LyuDepartment of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United StatesMore by Xingyi Lyu
- Randall E. WinansRandall E. WinansX-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United StatesJoint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Randall E. Winans
- Tao Li*Tao Li*Email: [email protected]; [email protected]Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, United StatesX-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United StatesJoint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United StatesMore by Tao Li
Abstract
The fundamental understanding of the liquid electrolyte (LE) solvation structure and electrode–electrolyte interface behavior will bring more in-depth thinking and revolutionary changes to the entire electrochemical energy storage field. Regardless of the variety of techniques available, the methods employed to investigate electrolyte solvation structures over a long-range are severely limited. Small-angle X-ray scattering (SAXS) is an ideal complement to Raman spectroscopy, Fourier transform infrared spectroscopy, or nuclear magnetic resonance, which offers a unique perspective from a larger scale on clusters or networks in electrolytes. Understanding the solvation structures from a few angstroms to hundreds of nanometers will undoubtedly lay a good foundation for studying the macroscopic transport properties, such as viscosity and ionic conductivity, of the LEs. In this Perspective, we discuss the use of SAXS to investigate the solvation structures in different electrolyte systems, a prospect for the SAXS broader application in the electrolyte study, and some challenges that need to be solved in the SAXS application.
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