In-situ/operando X-ray absorption spectroscopic investigation of the electrode/electrolyte interface on the molecular scale
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Joint Center for Energy Storage Research, Lemont, IL (United States)
- Joint Center for Energy Storage Research, Lemont, IL (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Joint Center for Energy Storage Research, Lemont, IL (United States); Univ. of California, Santa Cruz, CA (United States)
A method for performing X-ray absorption spectroscopy (XAS) in the soft X-ray region was developed to investigate the surface-sensitive electron signal of electrode/electrolyte interfaces in common multivalent based organic solvents under in situ/operando conditions. Our approach enables us to probe the molecular-scale structure of electrode interfaces by measuring total electron yield and is suitable for redox systems exhibiting low intrinsic electrochemical current. In-situ F K-edge XAS measurements in a 0.5 M Magnesium bis(trifluoromethanesulfonimide)/2-Methyltetrahydrofuran (Mg(TFSI)2/2-MeTHF) electrolyte were carried out to determine the evolution of interfacial species during the electrochemical charging/discharging process. Time-dependent density-functional theory (TD-DFT) simulation indicate that the F K-edge evolution is the result of interfacial chemical environment change driven by electrochemical potential. In addition, we performed the “operando XAS” which runs the CV and collects spectra simultaneously. Furthermore, by using this method, the non-equilibrium state of condensed matter interfaces and interfacial dynamical transient process can be revealed.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1838426
- Alternate ID(s):
- OSTI ID: 1776224
- Journal Information:
- Surface Science, Journal Name: Surface Science Vol. 702; ISSN 0039-6028
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Using soft x-ray absorption spectroscopy to characterize electrode/electrolyte interfaces in-situ and operando
Elucidating the Discharge Behavior of Aqueous Zinc Sulfur Batteries in the Presence of Molybdenum(IV) Chalcogenide Catalyst: The Criticality of Interfacial Electrochemistry
In operando observation system for electrochemical reaction by soft X-ray absorption spectroscopy with potential modulation method
Journal Article
·
Mon May 01 20:00:00 EDT 2017
· Journal of Electron Spectroscopy and Related Phenomena
·
OSTI ID:1415974
Elucidating the Discharge Behavior of Aqueous Zinc Sulfur Batteries in the Presence of Molybdenum(IV) Chalcogenide Catalyst: The Criticality of Interfacial Electrochemistry
Journal Article
·
Thu Nov 21 19:00:00 EST 2024
· ACS Applied Materials and Interfaces
·
OSTI ID:2519654
In operando observation system for electrochemical reaction by soft X-ray absorption spectroscopy with potential modulation method
Journal Article
·
Wed Oct 15 00:00:00 EDT 2014
· Review of Scientific Instruments
·
OSTI ID:22305900