Probing the electrolyte/electrode interface with vibrational sum frequency generation spectroscopy: A review

JOURNAL OF POWER SOURCES

卷:506

Review

Chowdhury, Azhad U.^1,2  Muralidharan, Nitin²  Daniel, Claus³  Amin, Ruhul²  Belharouak, Ilias² 

[1] Oak Ridge Natl Lab, Div Chem Sci, One Bethel Valley Rd, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Elect & Energy Infrastructures Div, One Bethel Valley Rd, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Energy Sci & Technol Directorate, One Bethel Valley Rd, Oak Ridge, TN 37831 USA

关键词: Batteries;    Interface;    Interphase;    Lithium-ion;    Solid-state;    Alternative-ion;    Electrodes;   

DOI  :  10.1016/j.jpowsour.2021.230173

来源: Elsevier

【 摘 要 】

Over the past decades, Lithium-ion batteries have seen extensive improvements, and as a result are now the primary choice in many applications for their power, energy, and durability. In recent years, battery cost has reduced by orders of magnitude through adoption of new materials and processes. Despite these advances, interfaces in these battery systems are yet to be fully understood. This is seen as a major limitation to further increase cycle life, calendar life, abuse tolerance, and performances. A major obstacle is a lack of comprehensive understanding of the complex dynamic chemical processes occurring at the electrolyte/electrode interface. In this context, vibrational sum frequency generation (vSFG) spectroscopy possesses the unique capability of probing a molecularly thin interfacial layer to obtain molecular-level information through nonlinear optical interaction. Probing the molecular level processes at the interfaces using such a versatile technique would be a game changer in the advancement of current battery research knowledge. This review article summarizes recent vSFG studies on the electrolyte/electrode interface of various electrode materials and nonaqueous electrolytes for LIBs and discusses future research perspectives. Overall, this focused review highlights the advantages and versatility of vSFG that can be used to further advance present-day battery research.

【 授权许可】

Free