skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy

Abstract

Photoelectrochemical water splitting is a promising approach for renewable production of hydrogen from solar energy and requires interfacing advanced water-splitting catalysts with semiconductors. Understanding the mechanism of function of such electrocatalysts at the atomic scale and under realistic working conditions is a challenging, yet important, task for advancing efficient and stable function. This is particularly true for the case of oxygen evolution catalysts and, here, we study a highly active Co3O4/Co(OH)2 biphasic electrocatalyst on Si by means of operando ambient-pressure X-ray photoelectron spectroscopy performed at the solid/liquid electrified interface. Spectral simulation and multiplet fitting reveal that the catalyst undergoes chemical-structural transformations as a function of the applied anodic potential, with complete conversion of the Co(OH)2 and partial conversion of the spinel Co3O4 phases to CoO(OH) under precatalytic electrochemical conditions. Furthermore, we observe new spectral features in both Co 2p and O 1s core-level regions to emerge under oxygen evolution reaction conditions on CoO(OH). The operando photoelectron spectra support assignment of these newly observed features to highly active Co4+ centers under catalytic conditions. Comparison of these results to those from a pure phase spinel Co3O4 catalyst supports this interpretation and reveals that the presence of Co(OH)2 enhances catalytic activity by promotingmore » transformations to CoO(OH). The direct investigation of electrified interfaces presented in this work can be extended to different materials under realistic catalytic conditions, thereby providing a powerful tool for mechanism discovery and an enabling capability for catalyst design.« less

Authors:
 [1];  [2]; ORCiD logo [3];  [3];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH, Berlin (Germany)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. IOM-CNR, Trieste (Italy)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1379905
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 139; Journal Issue: 26; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; water splitting; cobalt oxide photoelectrocatalysts; operando spectroscopy; ambient pressure XPS; oxygen evolution reaction mechanism

Citation Formats

Favaro, Marco, Yang, Jinhui, Nappini, Silvia, Magnano, Elena, Toma, Francesca M., Crumlin, Ethan J., Yano, Junko, and Sharp, Ian D. Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy. United States: N. p., 2017. Web. https://doi.org/10.1021/jacs.7b03211.
Favaro, Marco, Yang, Jinhui, Nappini, Silvia, Magnano, Elena, Toma, Francesca M., Crumlin, Ethan J., Yano, Junko, & Sharp, Ian D. Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy. United States. https://doi.org/10.1021/jacs.7b03211
Favaro, Marco, Yang, Jinhui, Nappini, Silvia, Magnano, Elena, Toma, Francesca M., Crumlin, Ethan J., Yano, Junko, and Sharp, Ian D. Fri . "Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy". United States. https://doi.org/10.1021/jacs.7b03211. https://www.osti.gov/servlets/purl/1379905.
@article{osti_1379905,
title = {Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy},
author = {Favaro, Marco and Yang, Jinhui and Nappini, Silvia and Magnano, Elena and Toma, Francesca M. and Crumlin, Ethan J. and Yano, Junko and Sharp, Ian D.},
abstractNote = {Photoelectrochemical water splitting is a promising approach for renewable production of hydrogen from solar energy and requires interfacing advanced water-splitting catalysts with semiconductors. Understanding the mechanism of function of such electrocatalysts at the atomic scale and under realistic working conditions is a challenging, yet important, task for advancing efficient and stable function. This is particularly true for the case of oxygen evolution catalysts and, here, we study a highly active Co3O4/Co(OH)2 biphasic electrocatalyst on Si by means of operando ambient-pressure X-ray photoelectron spectroscopy performed at the solid/liquid electrified interface. Spectral simulation and multiplet fitting reveal that the catalyst undergoes chemical-structural transformations as a function of the applied anodic potential, with complete conversion of the Co(OH)2 and partial conversion of the spinel Co3O4 phases to CoO(OH) under precatalytic electrochemical conditions. Furthermore, we observe new spectral features in both Co 2p and O 1s core-level regions to emerge under oxygen evolution reaction conditions on CoO(OH). The operando photoelectron spectra support assignment of these newly observed features to highly active Co4+ centers under catalytic conditions. Comparison of these results to those from a pure phase spinel Co3O4 catalyst supports this interpretation and reveals that the presence of Co(OH)2 enhances catalytic activity by promoting transformations to CoO(OH). The direct investigation of electrified interfaces presented in this work can be extended to different materials under realistic catalytic conditions, thereby providing a powerful tool for mechanism discovery and an enabling capability for catalyst design.},
doi = {10.1021/jacs.7b03211},
journal = {Journal of the American Chemical Society},
number = 26,
volume = 139,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

The irreversible momentum of clean energy
journal, January 2017


Mimicking Photosynthetic Solar Energy Transduction
journal, January 2001

  • Gust, Devens; Moore, Thomas A.; Moore, Ana L.
  • Accounts of Chemical Research, Vol. 34, Issue 1
  • DOI: 10.1021/ar9801301

Powering the planet: Chemical challenges in solar energy utilization
journal, October 2006

  • Lewis, N. S.; Nocera, D. G.
  • Proceedings of the National Academy of Sciences, Vol. 103, Issue 43, p. 15729-15735
  • DOI: 10.1073/pnas.0603395103

Meeting the Clean Energy Demand:  Nanostructure Architectures for Solar Energy Conversion
journal, January 2007

  • Kamat, Prashant V.
  • The Journal of Physical Chemistry C, Vol. 111, Issue 7
  • DOI: 10.1021/jp066952u

Artificial photosynthesis for solar water-splitting
journal, July 2012

  • Tachibana, Yasuhiro; Vayssieres, Lionel; Durrant, James R.
  • Nature Photonics, Vol. 6, Issue 8
  • DOI: 10.1038/nphoton.2012.175

Effective Charge Carrier Utilization in Photocatalytic Conversions
journal, April 2016


Solar Water Splitting Cells
journal, November 2010

  • Walter, Michael G.; Warren, Emily L.; McKone, James R.
  • Chemical Reviews, Vol. 110, Issue 11, p. 6446-6473
  • DOI: 10.1021/cr1002326

Efficient solar water splitting by enhanced charge separation in a bismuth vanadate-silicon tandem photoelectrode
journal, July 2013

  • Abdi, Fatwa F.; Han, Lihao; Smets, Arno H. M.
  • Nature Communications, Vol. 4, Issue 1
  • DOI: 10.1038/ncomms3195

Composite photoanodes for photoelectrochemical solar water splitting
journal, January 2010

  • Sun, Jianwei; Zhong, Diane K.; Gamelin, Daniel R.
  • Energy & Environmental Science, Vol. 3, Issue 9
  • DOI: 10.1039/c0ee00030b

Electrodeposition of Crystalline Co 3 O 4 —A Catalyst for the Oxygen Evolution Reaction
journal, September 2012

  • Koza, Jakub A.; He, Zhen; Miller, Andrew S.
  • Chemistry of Materials, Vol. 24, Issue 18
  • DOI: 10.1021/cm3012205

Solution-Cast Metal Oxide Thin Film Electrocatalysts for Oxygen Evolution
journal, October 2012

  • Trotochaud, Lena; Ranney, James K.; Williams, Kerisha N.
  • Journal of the American Chemical Society, Vol. 134, Issue 41
  • DOI: 10.1021/ja307507a

Recent advances in semiconductors for photocatalytic and photoelectrochemical water splitting
journal, January 2014

  • Hisatomi, Takashi; Kubota, Jun; Domen, Kazunari
  • Chem. Soc. Rev., Vol. 43, Issue 22
  • DOI: 10.1039/C3CS60378D

High-Throughput Mapping of the Electrochemical Properties of (Ni-Fe-Co-Ce)O x Oxygen-Evolution Catalysts
journal, December 2013

  • Haber, Joel A.; Xiang, Chengxiang; Guevarra, Dan
  • ChemElectroChem, Vol. 1, Issue 3
  • DOI: 10.1002/celc.201300229

Cobalt-Oxide-Based Materials as Water Oxidation Catalyst: Recent Progress and Challenges
journal, September 2014

  • Deng, Xiaohui; Tüysüz, Harun
  • ACS Catalysis, Vol. 4, Issue 10
  • DOI: 10.1021/cs500713d

Efficient and Sustained Photoelectrochemical Water Oxidation by Cobalt Oxide/Silicon Photoanodes with Nanotextured Interfaces
journal, April 2014

  • Yang, Jinhui; Walczak, Karl; Anzenberg, Eitan
  • Journal of the American Chemical Society, Vol. 136, Issue 17
  • DOI: 10.1021/ja501513t

Multiphase Nanostructure of a Quinary Metal Oxide Electrocatalyst Reveals a New Direction for OER Electrocatalyst Design
journal, February 2015

  • Haber, Joel A.; Anzenburg, Eitan; Yano, Junko
  • Advanced Energy Materials, Vol. 5, Issue 10
  • DOI: 10.1002/aenm.201402307

Electrochemical Water Oxidation with Cobalt-Based Electrocatalysts from pH 0–14: The Thermodynamic Basis for Catalyst Structure, Stability, and Activity
journal, August 2011

  • Gerken, James B.; McAlpin, J. Gregory; Chen, Jamie Y. C.
  • Journal of the American Chemical Society, Vol. 133, Issue 36
  • DOI: 10.1021/ja205647m

The Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis
journal, June 2010


Intermediate-Range Structure of Self-Assembled Cobalt-Based Oxygen-Evolving Catalyst
journal, April 2013

  • Farrow, Christopher L.; Bediako, D. Kwabena; Surendranath, Yogesh
  • Journal of the American Chemical Society, Vol. 135, Issue 17
  • DOI: 10.1021/ja401276f

Reaction Pathways for Oxygen Evolution Promoted by Cobalt Catalyst
journal, October 2013

  • Mattioli, Giuseppe; Giannozzi, Paolo; Amore Bonapasta, Aldo
  • Journal of the American Chemical Society, Vol. 135, Issue 41
  • DOI: 10.1021/ja401797v

Proton–Electron Transport and Transfer in Electrocatalytic Films. Application to a Cobalt-Based O 2 -Evolution Catalyst
journal, May 2013

  • Bediako, D. Kwabena; Costentin, Cyrille; Jones, Evan C.
  • Journal of the American Chemical Society, Vol. 135, Issue 28
  • DOI: 10.1021/ja403656w

Importance of Correlation in Determining Electrocatalytic Oxygen Evolution Activity on Cobalt Oxides
journal, September 2012

  • García-Mota, Mónica; Bajdich, Michal; Viswanathan, Venkatasubramanian
  • The Journal of Physical Chemistry C, Vol. 116, Issue 39
  • DOI: 10.1021/jp306303y

Theoretical Investigation of the Activity of Cobalt Oxides for the Electrochemical Oxidation of Water
journal, August 2013

  • Bajdich, Michal; García-Mota, Mónica; Vojvodic, Aleksandra
  • Journal of the American Chemical Society, Vol. 135, Issue 36
  • DOI: 10.1021/ja405997s

On the chemical state of Co oxide electrocatalysts during alkaline water splitting
journal, January 2013

  • Friebel, Daniel; Bajdich, Michal; Yeo, Boon Siang
  • Physical Chemistry Chemical Physics, Vol. 15, Issue 40
  • DOI: 10.1039/c3cp52981a

Water Oxidation Mechanism for Synthetic Co–Oxides with Small Nuclearity
journal, September 2013

  • Li, Xichen; Siegbahn, Per E. M.
  • Journal of the American Chemical Society, Vol. 135, Issue 37
  • DOI: 10.1021/ja4053448

Structure and Valency of a Cobalt−Phosphate Water Oxidation Catalyst Determined by in Situ X-ray Spectroscopy
journal, October 2010

  • Kanan, Matthew W.; Yano, Junko; Surendranath, Yogesh
  • Journal of the American Chemical Society, Vol. 132, Issue 39
  • DOI: 10.1021/ja1023767

In Situ Observation of Surface Species on Iridium Oxide Nanoparticles during the Oxygen Evolution Reaction
journal, May 2014

  • Sanchez Casalongue, Hernan G.; Ng, May Ling; Kaya, Sarp
  • Angewandte Chemie International Edition, Vol. 53, Issue 28
  • DOI: 10.1002/anie.201402311

Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts
journal, January 2015

  • González-Flores, Diego; Sánchez, Irene; Zaharieva, Ivelina
  • Angewandte Chemie International Edition, Vol. 54, Issue 8
  • DOI: 10.1002/anie.201409333

Reversible amorphization and the catalytically active state of crystalline Co3O4 during oxygen evolution
journal, October 2015

  • Bergmann, Arno; Martinez-Moreno, Elias; Teschner, Detre
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms9625

Water oxidation by amorphous cobalt-based oxides: in situ tracking of redox transitions and mode of catalysis
journal, January 2015

  • Risch, Marcel; Ringleb, Franziska; Kohlhoff, Mike
  • Energy & Environmental Science, Vol. 8, Issue 2
  • DOI: 10.1039/C4EE03004D

EPR Evidence for Co(IV) Species Produced During Water Oxidation at Neutral pH
journal, May 2010

  • McAlpin, J. Gregory; Surendranath, Yogesh; Dincǎ, Mircea
  • Journal of the American Chemical Society, Vol. 132, Issue 20
  • DOI: 10.1021/ja1013344

Elucidating the Domain Structure of the Cobalt Oxide Water Splitting Catalyst by X-ray Pair Distribution Function Analysis
journal, June 2012

  • Du, Pingwu; Kokhan, Oleksandr; Chapman, Karena W.
  • Journal of the American Chemical Society, Vol. 134, Issue 27
  • DOI: 10.1021/ja303826a

Unification of Catalytic Water Oxidation and Oxygen Reduction Reactions: Amorphous Beat Crystalline Cobalt Iron Oxides
journal, December 2014

  • Indra, Arindam; Menezes, Prashanth W.; Sahraie, Nastaran Ranjbar
  • Journal of the American Chemical Society, Vol. 136, Issue 50
  • DOI: 10.1021/ja509348t

Water Oxidation by Amorphous Cobalt-Based Oxides: Volume Activity and Proton Transfer to Electrolyte Bases
journal, January 2014

  • Klingan, Katharina; Ringleb, Franziska; Zaharieva, Ivelina
  • ChemSusChem, Vol. 7, Issue 5
  • DOI: 10.1002/cssc.201301019

A multifunctional biphasic water splitting catalyst tailored for integration with high-performance semiconductor photoanodes
journal, November 2016

  • Yang, Jinhui; Cooper, Jason K.; Toma, Francesca M.
  • Nature Materials, Vol. 16, Issue 3
  • DOI: 10.1038/nmat4794

In Situ Study of the Gas-Phase Electrolysis of Water on Platinum by NAP-XPS
journal, September 2013

  • Arrigo, Rosa; Hävecker, Michael; Schuster, Manfred E.
  • Angewandte Chemie International Edition, Vol. 52, Issue 44
  • DOI: 10.1002/anie.201304765

Using “Tender” X-ray Ambient Pressure X-Ray Photoelectron Spectroscopy as A Direct Probe of Solid-Liquid Interface
journal, May 2015

  • Axnanda, Stephanus; Crumlin, Ethan J.; Mao, Baohua
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep09788

In situ investigation of dissociation and migration phenomena at the Pt/electrolyte interface of an electrochemical cell
journal, January 2015

  • Law, Yeuk Ting; Zafeiratos, Spyridon; Neophytides, Stylianos G.
  • Chemical Science, Vol. 6, Issue 10
  • DOI: 10.1039/C5SC01421B

Photoelectron Spectroscopy at the Graphene-Liquid Interface Reveals the Electronic Structure of an Electrodeposited Cobalt/Graphene Electrocatalyst
journal, October 2015

  • Velasco-Velez, Juan J.; Pfeifer, Verena; Hävecker, Michael
  • Angewandte Chemie International Edition, Vol. 54, Issue 48
  • DOI: 10.1002/anie.201506044

Direct observation of the energetics at a semiconductor/liquid junction by operando X-ray photoelectron spectroscopy
journal, January 2015

  • Lichterman, Michael F.; Hu, Shu; Richter, Matthias H.
  • Energy & Environmental Science, Vol. 8, Issue 8
  • DOI: 10.1039/C5EE01014D

Aqueous solution/metal interfaces investigated in operando by photoelectron spectroscopy
journal, January 2015

  • Karslıoğlu, O.; Nemšák, S.; Zegkinoglou, I.
  • Faraday Discussions, Vol. 180
  • DOI: 10.1039/C5FD00003C

Unravelling the electrochemical double layer by direct probing of the solid/liquid interface
journal, August 2016

  • Favaro, Marco; Jeong, Beomgyun; Ross, Philip N.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms12695

Subsurface Oxygen in Oxide-Derived Copper Electrocatalysts for Carbon Dioxide Reduction
journal, December 2016

  • Eilert, André; Cavalca, Filippo; Roberts, F. Sloan
  • The Journal of Physical Chemistry Letters, Vol. 8, Issue 1
  • DOI: 10.1021/acs.jpclett.6b02273

An Operando Investigation of (Ni–Fe–Co–Ce)O x System as Highly Efficient Electrocatalyst for Oxygen Evolution Reaction
journal, January 2017


Elucidating the alkaline oxygen evolution reaction mechanism on platinum
journal, January 2017

  • Favaro, M.; Valero-Vidal, C.; Eichhorn, J.
  • Journal of Materials Chemistry A, Vol. 5, Issue 23
  • DOI: 10.1039/C7TA00409E

Recent applications of hard x-ray photoelectron spectroscopy
journal, May 2016

  • Weiland, Conan; Rumaiz, Abdul K.; Pianetta, Piero
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 34, Issue 3
  • DOI: 10.1116/1.4946046

Combined soft and hard X-ray ambient pressure photoelectron spectroscopy studies of semiconductor/electrolyte interfaces
journal, November 2017

  • Starr, David E.; Favaro, Marco; Abdi, Fatwa F.
  • Journal of Electron Spectroscopy and Related Phenomena, Vol. 221
  • DOI: 10.1016/j.elspec.2017.05.003

Auger and Coster-Kronig broadening effects in the 2p and 3p photoelectron spectra from the metals 22 Ti- 30 Zn
journal, August 1981


Electronic structure of 3 d -transition-metal compounds by analysis of the 2 p core-level photoemission spectra
journal, August 1992


Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni
journal, January 2011

  • Biesinger, Mark C.; Payne, Brad P.; Grosvenor, Andrew P.
  • Applied Surface Science, Vol. 257, Issue 7, p. 2717-2730
  • DOI: 10.1016/j.apsusc.2010.10.051

Synthesis and Characterization of Cobalt Hydroxide, Cobalt Oxyhydroxide, and Cobalt Oxide Nanodiscs
journal, November 2009

  • Yang, Jing; Liu, Hongwei; Martens, Wayde N.
  • The Journal of Physical Chemistry C, Vol. 114, Issue 1
  • DOI: 10.1021/jp908548f

CoO x thin film deposited by CVD as efficient water oxidation catalyst: change of oxidation state in XPS and its correlation to electrochemical activity
journal, January 2016

  • Weidler, Natascha; Paulus, Sarina; Schuch, Jona
  • Physical Chemistry Chemical Physics, Vol. 18, Issue 16
  • DOI: 10.1039/C5CP05691H

Recoil effects of photoelectrons in a solid
journal, June 2007


Full Valence Band Photoemission from Liquid Water Using EUV Synchrotron Radiation
journal, April 2004

  • Winter, B.; Weber, R.; Widdra, W.
  • The Journal of Physical Chemistry A, Vol. 108, Issue 14
  • DOI: 10.1021/jp030263q

High-resolution soft X-ray photoelectron spectroscopy of liquid water
journal, January 2011

  • Nishizawa, Kiyoshi; Kurahashi, Naoya; Sekiguchi, Kentarou
  • Phys. Chem. Chem. Phys., Vol. 13, Issue 2
  • DOI: 10.1039/C0CP01636E

Photoelectron Spectra of Aqueous Solutions from First Principles
journal, May 2016

  • Gaiduk, Alex P.; Govoni, Marco; Seidel, Robert
  • Journal of the American Chemical Society, Vol. 138, Issue 22
  • DOI: 10.1021/jacs.6b00225

Valence-band electronic structure of Co 3 O 4 epitaxy on CoO(100)
journal, February 1999


Simulation of electron spectra for surface analysis (SESSA): a novel software tool for quantitative Auger-electron spectroscopy and X-ray photoelectron spectroscopy
journal, January 2005

  • Smekal, Werner; Werner, Wolfgang S. M.; Powell, Cedric J.
  • Surface and Interface Analysis, Vol. 37, Issue 11
  • DOI: 10.1002/sia.2097

Simulation of Electron Spectra for Surface Analysis (SESSA)for quantitative interpretation of (hard) X-ray photoelectron spectra(HAXPES)
journal, October 2013

  • Werner, Wolfgang S. M.; Smekal, Werner; Hisch, Thomas
  • Journal of Electron Spectroscopy and Related Phenomena, Vol. 190
  • DOI: 10.1016/j.elspec.2013.06.007

Adaptive semiconductor/electrocatalyst junctions in water-splitting photoanodes
journal, December 2013

  • Lin, Fuding; Boettcher, Shannon W.
  • Nature Materials, Vol. 13, Issue 1
  • DOI: 10.1038/nmat3811

Time-resolved observations of water oxidation intermediates on a cobalt oxide nanoparticle catalyst
journal, February 2014

  • Zhang, Miao; de Respinis, Moreno; Frei, Heinz
  • Nature Chemistry, Vol. 6, Issue 4
  • DOI: 10.1038/nchem.1874

Surface Proton Hopping and Fast-Kinetics Pathway of Water Oxidation on Co 3 O 4 (001) Surface
journal, July 2016


In situ observation of reactive oxygen species forming on oxygen-evolving iridium surfaces
journal, January 2017

  • Pfeifer, Verena; Jones, Travis E.; Velasco Vélez, Juan J.
  • Chemical Science, Vol. 8, Issue 3
  • DOI: 10.1039/C6SC04622C

X-ray photoelectron studies on some oxides and hydroxides of cobalt, nickel, and copper
journal, November 1975

  • McIntyre, N. S.; Cook, M. G.
  • Analytical Chemistry, Vol. 47, Issue 13
  • DOI: 10.1021/ac60363a034

ESCA studies of chemical shifts for metal oxides
journal, March 1976


Systematic XPS studies of metal oxides, hydroxides and peroxides
journal, January 2000

  • Dupin, Jean-Charles; Gonbeau, Danielle; Vinatier, Philippe
  • Physical Chemistry Chemical Physics, Vol. 2, Issue 6
  • DOI: 10.1039/a908800h

Deposition of β-Co(OH) 2 Films by Electrochemical Reduction of Tris(ethylenediamine)cobalt(III) in Alkaline Solution
journal, April 2013

  • Koza, Jakub A.; Hull, Caleb M.; Liu, Ying-Chau
  • Chemistry of Materials, Vol. 25, Issue 9
  • DOI: 10.1021/cm400579k

Reversible adapting layer produces robust single-crystal electrocatalyst for oxygen evolution
journal, August 2015

  • Tung, Ching-Wei; Hsu, Ying-Ya; Shen, Yen-Ping
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms9106

Practical algorithm for background subtraction
journal, June 1989


Curve synthesis and optimization procedures for X-ray photoelectron spectroscopy
journal, February 1991


Resolving overlapping peaks in ARXPS data: The effect of noise and fitting method
journal, January 2012

  • Muñoz-Flores, Jaime; Herrera-Gomez, Alberto
  • Journal of Electron Spectroscopy and Related Phenomena, Vol. 184, Issue 11-12
  • DOI: 10.1016/j.elspec.2011.08.004

    Works referencing / citing this record:

    A multifunctional vanadium-doped cobalt oxide layer on silicon photoanodes for efficient and stable photoelectrochemical water oxidation
    journal, January 2018

    • Xing, Zhuo; Wu, Hengyi; Wu, Liang
    • Journal of Materials Chemistry A, Vol. 6, Issue 42
    • DOI: 10.1039/c8ta07552b

    The synergetic effect of h-BN shells and subsurface B in CoB x @h-BN nanocatalysts for enhanced oxygen evolution reactions
    journal, January 2018

    • Chen, Siru; Li, Yanqiang; Zhang, Zhihua
    • Journal of Materials Chemistry A, Vol. 6, Issue 23
    • DOI: 10.1039/c8ta02312c

    Co3O4 Nanosheet Arrays on Ni Foam as Electrocatalyst for Oxygen Evolution Reaction
    journal, May 2018


    Unified structural motifs of the catalytically active state of Co(oxyhydr)oxides during the electrochemical oxygen evolution reaction
    journal, September 2018


    In-situ-Methoden zur Charakterisierung elektrochemischer NiFe-Sauerstoffentwicklungskatalysatoren
    journal, November 2018


    The Structure of the Cobalt Oxide/Au Catalyst Interface in Electrochemical Water Splitting
    journal, August 2018

    • Fester, Jakob; Makoveev, Anton; Grumelli, Doris
    • Angewandte Chemie International Edition, Vol. 57, Issue 37
    • DOI: 10.1002/anie.201804417

    Operando diffuse reflectance UV-vis spectroelectrochemistry for investigating oxygen evolution electrocatalysts
    journal, January 2020

    • Wahl, Sebastian; El-Refaei, Sayed M.; Amsalem, Patrick
    • Catalysis Science & Technology, Vol. 10, Issue 2
    • DOI: 10.1039/c9cy02329a

    Operando X-Ray Absorption Spectroscopy Shows Iron Oxidation Is Concurrent with Oxygen Evolution in Cobalt-Iron (Oxy)hydroxide Electrocatalysts
    journal, September 2018

    • Enman, Lisa J.; Stevens, Michaela Burke; Dahan, Meir Haim
    • Angewandte Chemie International Edition, Vol. 57, Issue 39
    • DOI: 10.1002/anie.201808818

    Electrochemical flow cell enabling operando probing of electrocatalyst surfaces by X-ray spectroscopy and diffraction
    journal, January 2019

    • Farmand, Maryam; Landers, Alan T.; Lin, John C.
    • Physical Chemistry Chemical Physics, Vol. 21, Issue 10
    • DOI: 10.1039/c8cp07423b

    Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts
    journal, March 2019


    Cobalt Incorporated Hydroxyapatite Catalyst for Water Oxidation
    journal, October 2019


    Surface Reconstruction, Oxidation Mechanism, and Stability of Cd 3 As 2
    journal, March 2019

    • Gao, Junfeng; Cupolillo, Anna; Nappini, Silvia
    • Advanced Functional Materials, Vol. 29, Issue 26
    • DOI: 10.1002/adfm.201900965

    Zn 0.35 Co 0.65 O – A Stable and Highly Active Oxygen Evolution Catalyst Formed by Zinc Leaching and Tetrahedral Coordinated Cobalt in Wurtzite Structure
    journal, April 2019

    • Wahl, Sebastian; El‐Refaei, Sayed M.; Buzanich, Ana Guilherme
    • Advanced Energy Materials, Vol. 9, Issue 20
    • DOI: 10.1002/aenm.201900328

    Insights into the durability of Co–Fe spinel oxygen evolution electrocatalysts via operando studies of the catalyst structure
    journal, January 2018

    • Calvillo, L.; Carraro, F.; Vozniuk, O.
    • Journal of Materials Chemistry A, Vol. 6, Issue 16
    • DOI: 10.1039/c7ta10892c

    Self-limited growth of an oxyhydroxide phase at the Fe 3 O 4 (001) surface in liquid and ambient pressure water
    journal, October 2019

    • Kraushofer, Florian; Mirabella, Francesca; Xu, Jian
    • The Journal of Chemical Physics, Vol. 151, Issue 15
    • DOI: 10.1063/1.5116652

    Atomically-defined model catalysts in ultrahigh vacuum and in liquid electrolytes: particle size-dependent CO adsorption on Pt nanoparticles on ordered Co 3 O 4 (111) films
    journal, January 2018

    • Faisal, Firas; Stumm, Corinna; Bertram, Manon
    • Physical Chemistry Chemical Physics, Vol. 20, Issue 36
    • DOI: 10.1039/c8cp03770a

    The formation of (NiFe)S 2 pyrite mesocrystals as efficient pre-catalysts for water oxidation
    journal, January 2018

    • Ni, Bing; He, Ting; Wang, Jia-ou
    • Chemical Science, Vol. 9, Issue 10
    • DOI: 10.1039/c7sc05452a

    α(β)-PbO 2 doped with Co 3 O 4 and CNT porous composite materials with enhanced electrocatalytic activity for zinc electrowinning
    journal, January 2020

    • Wang, Xuanbing; Xu, Ruidong; Feng, Suyang
    • RSC Advances, Vol. 10, Issue 3
    • DOI: 10.1039/c9ra08032e

    Application of In Situ Techniques for the Characterization of NiFe-Based Oxygen Evolution Reaction (OER) Electrocatalysts
    journal, November 2018

    • Zhu, Kaiyue; Zhu, Xuefeng; Yang, Weishen
    • Angewandte Chemie International Edition, Vol. 58, Issue 5
    • DOI: 10.1002/anie.201802923

    Porous Pt nanoframes decorated with Bi(OH)3 as highly efficient and stable electrocatalyst for ethanol oxidation reaction
    journal, January 2020


    Improving the oxygen evolution activity of Co 3 O 4 by introducing Ce species derived from Ce-substituted ZIF-67
    journal, January 2019

    • Zhou, Jieming; Zheng, Haiyan; Luan, Qingjie
    • Sustainable Energy & Fuels, Vol. 3, Issue 11
    • DOI: 10.1039/c9se00541b

    Interface Science Using Ambient Pressure Hard X-ray Photoelectron Spectroscopy
    journal, January 2019


    Oxygen reduction reaction mechanism and kinetics on M-NxCy and M@N-C active sites present in model M-N-C catalysts under alkaline and acidic conditions
    journal, November 2019


    Recent Progress in Bifunctional Electrocatalysts for Overall Water Splitting under Acidic Conditions
    journal, May 2019

    • Jin, Haneul; Joo, Jinwhan; Chaudhari, Nitin K.
    • ChemElectroChem, Vol. 6, Issue 13
    • DOI: 10.1002/celc.201900507

    Laser Fragmentation‐Induced Defect‐Rich Cobalt Oxide Nanoparticles for Electrochemical Oxygen Evolution Reaction
    journal, December 2019


    Catalysis by design: development of a bifunctional water splitting catalyst through an operando measurement directed optimization cycle
    journal, January 2018

    • Kornienko, Nikolay; Heidary, Nina; Cibin, Giannantonio
    • Chemical Science, Vol. 9, Issue 24
    • DOI: 10.1039/c8sc01415a