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Title: Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte

Abstract

Understanding the surface chemistry of electrocatalysts in operando can bring insight into the reaction mechanism, and ultimately the design of more efficient materials for sustainable energy storage and conversion. Recent progress in synchrotron based X-ray spectroscopies for in operando characterization allows us to probe the solid/liquid interface directly while applying an external potential, applied here to the model system of Pt in alkaline electrolyte for the hydrogen evolution reaction (HER). We employ ambient pressure X-ray photoelectron spectroscopy (AP-XPS) to identify the oxidation and reduction of Pt-oxides and hydroxides on the surface as a function of applied potential, and further assess the potential for hydrogen adsorption and absorption (hydride formation) during and after the HER. This new window into the surface chemistry of Pt in alkaline brings insight into the nature of the rate limiting step, the extent of H ad/absorption and it’s persistence at more anodic potentials.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7]
  1. Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
  2. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States; Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States; Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
  3. Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
  4. Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
  5. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China; Division of Condensed Matter Physics and Photon Science, School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China
  6. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
  7. Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States; Joint Center for Energy Storage Research, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1421342
Report Number(s):
PNNL-SA-127572
Journal ID: ISSN 1520-6106
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry; Journal Volume: 122; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
X-ray photoelectron spectroscopy; electrochemistry; platinum; operando spectroscopy; hydrogen evolution reaction

Citation Formats

Stoerzinger, Kelsey A., Favaro, Marco, Ross, Philip N., Yano, Junko, Liu, Zhi, Hussain, Zahid, and Crumlin, Ethan J. Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte. United States: N. p., 2017. Web. doi:10.1021/acs.jpcb.7b06953.
Stoerzinger, Kelsey A., Favaro, Marco, Ross, Philip N., Yano, Junko, Liu, Zhi, Hussain, Zahid, & Crumlin, Ethan J. Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte. United States. doi:10.1021/acs.jpcb.7b06953.
Stoerzinger, Kelsey A., Favaro, Marco, Ross, Philip N., Yano, Junko, Liu, Zhi, Hussain, Zahid, and Crumlin, Ethan J. Thu . "Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte". United States. doi:10.1021/acs.jpcb.7b06953.
@article{osti_1421342,
title = {Probing the Surface of Platinum during the Hydrogen Evolution Reaction in Alkaline Electrolyte},
author = {Stoerzinger, Kelsey A. and Favaro, Marco and Ross, Philip N. and Yano, Junko and Liu, Zhi and Hussain, Zahid and Crumlin, Ethan J.},
abstractNote = {Understanding the surface chemistry of electrocatalysts in operando can bring insight into the reaction mechanism, and ultimately the design of more efficient materials for sustainable energy storage and conversion. Recent progress in synchrotron based X-ray spectroscopies for in operando characterization allows us to probe the solid/liquid interface directly while applying an external potential, applied here to the model system of Pt in alkaline electrolyte for the hydrogen evolution reaction (HER). We employ ambient pressure X-ray photoelectron spectroscopy (AP-XPS) to identify the oxidation and reduction of Pt-oxides and hydroxides on the surface as a function of applied potential, and further assess the potential for hydrogen adsorption and absorption (hydride formation) during and after the HER. This new window into the surface chemistry of Pt in alkaline brings insight into the nature of the rate limiting step, the extent of H ad/absorption and it’s persistence at more anodic potentials.},
doi = {10.1021/acs.jpcb.7b06953},
journal = {Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry},
number = 2,
volume = 122,
place = {United States},
year = {Thu Nov 02 00:00:00 EDT 2017},
month = {Thu Nov 02 00:00:00 EDT 2017}
}