期刊
CHEMISTRY OF MATERIALS
卷 35, 期 23, 页码 9821-9832出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.3c01648
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The fundamental understanding of the solvation structure of liquid electrolyte (LE) and the behavior of the electrode-electrolyte interface will bring deeper thinking and revolutionary changes to the field of electrochemical energy storage. Small-angle X-ray scattering (SAXS) is an ideal complement to other spectroscopic techniques and offers a unique perspective on clusters or networks in electrolytes. Understanding the solvation structures at different scales lays a solid foundation for the study of macroscopic transport properties of LEs, such as viscosity and ionic conductivity.
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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