Topics in Catalysis

, Volume 59, Issue 5–7, pp 439–447

Operando X-Ray Photoelectron Spectroscopy Studies of Aqueous Electrocatalytic Systems

Original Paper

DOI: 10.1007/s11244-015-0525-3

Cite this article as:
Ogasawara, H., Kaya, S. & Nilsson, A. Top Catal (2016) 59: 439. doi:10.1007/s11244-015-0525-3

Abstract

Development of efficient fuel cell and electrochemical cell devices to retrieve energy in a renewable manner lies in the molecular level understanding of the conversion processes taking place at surfaces and interfaces. These processes involve complicated bond breaking and formation at the surfaces as well as charge transfer through interfaces which are challenging to track under operational conditions. We address the nature of these interfacial processes using ambient pressure X-ray photoelectron spectroscopy by leveraging both its chemical and surface sensitivity. Herein, we give several examples of fuel cell and electrolysis reactions to demonstrate the importance of probing the surface under operating conditions. Oxygen reduction reaction taking place on the platinum cathode in proton exchange membrane fuel cells, water splitting reactions including oxygen evolution reaction over IrO2 and hydrogen evolution reaction over MoSx reveal that different species dominate on the surface under different operational conditions and surface activities are directly related to the stabilities of those intermediate species and possible structural rearrangements of the catalyst material.

Keywords

Operando spectroscopy Electrochemistry X-ray photoelectron spectroscopy Fuel cell Electrolysis 

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Hirohito Ogasawara
    • 1
    • 2
  • Sarp Kaya
    • 2
    • 3
    • 4
  • Anders Nilsson
    • 2
    • 3
    • 5
  1. 1.Stanford Synchrotron Radiation LightsourceSLAC National Accelerator LaboratoryMenlo ParkUSA
  2. 2.SUNCAT Center for Interface Science and CatalysisSLAC National Accelerator LaboratoryMenlo ParkUSA
  3. 3.Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation HubLBNLBerkeleyUSA
  4. 4.Department of ChemistryKoç UniversityIstanbulTurkey
  5. 5.Department of Physics, AlbaNova University CenterStockholm UniversityStockholmSweden

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