DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Insights into the Electrochemical Oxidation and Reduction of Nickel Oxide Surfaces

Journal Article · · ACS Applied Materials and Interfaces

Surface oxidation/reduction processes, driven by varying electrochemical potentials, can substantially impact catalyst effectiveness and, consequently, electrolyzer performance. Here, this study combines theoretical and experimental approaches to explore the surface redox behavior of nickel oxides, which are cost-effective and efficient catalysts for many electrochemical reactions. Surface Pourbaix diagrams for three different phases of nickel oxides, i.e., nickel hydroxide (Ni(OH)2), nickel oxyhydroxide (NiOOH), and nickel dioxide (NiO2), were constructed using density functional theory-based simulations. Various experimental methods, including cyclic voltammetry, in situ Raman spectroscopy, and electrochemical titration, were employed to probe the surface redox processes of nickel oxide thin films. Our findings indicate that the ABAB stacking sequence of Ni(OH)2 lacks stability under oxidizing conditions to host the surface oxidation (deprotonation) events, while the AABBCC stacking sequence of NiOOH is energetically favorable due to the presence of interlayer hydrogen bonding. Rapid charge transfer facilitated by interlayer hydrogen bonding accounts for the higher reactivity of partially oxidized/reduced NiOOH (001) surfaces compared to Ni(OH)2 (001) and NiO2 (001) surfaces with the same stoichiometry, where interlayer hydrogen bonding is absent. Insights presented in this work can offer guidelines for optimizing operational conditions and tailoring the surface structures and oxidation states of nickel oxides to enhance performance in applications such as electrocatalysis and supercapacitors.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
2497911
Report Number(s):
LLNL--JRNL-867084; 1102237
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 1 Vol. 17; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (49)

Thermodynamics of Corrosion: Pourbaix Diagrams book November 2009
Studies concerning charged nickel hydroxide electrodes I. Measurement of reversible potentials journal January 1980
Zur kenntnis der nickelhydroxidelektrode—I.Über das nickel (II)-hydroxidhydrat journal August 1966
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis journal February 2013
Deprotonation and cation adsorption on the NiOOH/water interface: A grand-canonical first-principles investigation journal December 2021
Overview of nanostructured metal oxides and pure nickel oxide (NiO) electrodes for supercapacitors: A review journal February 2018
Chemically grown, porous, nickel oxide thin-film for electrochemical supercapacitors journal February 2011
Charge compensation mechanisms in Li1.16Ni0.15Co0.19Mn0.50O2 positive electrode material for Li-ion batteries analyzed by a combination of hard and soft X-ray absorption near edge structure journal January 2013
Dynamics and Hysteresis of Hydrogen Intercalation and Deintercalation in Palladium Electrodes: A Multimodal In Situ X-ray Diffraction, Coulometry, and Computational Study journal July 2021
Effects of the Aqueous Environment on the Stability and Chemistry of β-NiOOH Surfaces journal July 2018
Alkaline Electrolyte and Fe Impurity Effects on the Performance and Active-Phase Structure of NiOOH Thin Films for OER Catalysis Applications journal May 2015
Structural and Electronic Features of β-Ni(OH) 2 and β-NiOOH from First Principles journal October 2015
Quantifying Confidence in DFT-Predicted Surface Pourbaix Diagrams of Transition-Metal Electrode–Electrolyte Interfaces journal September 2018
Electrochemical Hydrogenation, Hydrogenolysis, and Dehydrogenation for Reductive and Oxidative Biomass Upgrading Using 5-Hydroxymethylfurfural as a Model System journal September 2022
Insights into Active Sites and Mechanisms of Benzyl Alcohol Oxidation on Nickel–Iron Oxyhydroxide Electrodes journal March 2023
Mechanistic Insights into the Electrochemical Oxidation of 5-Hydroxymethylfurfural on a Thin-Film Ni Anode journal June 2024
A Density Functional + U Assessment of Oxygen Evolution Reaction Mechanisms on β-NiOOH journal July 2017
A Comparative Study of Nickel, Cobalt, and Iron Oxyhydroxide Anodes for the Electrochemical Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid journal November 2018
Oxygen Evolution Activity on NiOOH Catalysts: Four-Coordinated Ni Cation as the Active Site and the Hydroperoxide Mechanism journal January 2020
Mechanism and Activity of Water Oxidation on Selected Surfaces of Pure and Fe-Doped NiO x journal March 2014
Investigation of the Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li 1 - x Co 1/3 Ni 1/3 Mn 1/3 O 2 Electrode System by Combination of Soft and Hard X-ray Absorption Spectroscopy journal December 2005
Theoretical Investigation of the Activity of Cobalt Oxides for the Electrochemical Oxidation of Water journal August 2013
Unraveling Two Pathways for Electrochemical Alcohol and Aldehyde Oxidation on NiOOH journal December 2020
Facet-Independent Oxygen Evolution Activity of Pure β-NiOOH: Different Chemistries Leading to Similar Overpotentials journal January 2020
The NIST Chemistry WebBook:  A Chemical Data Resource on the Internet journal September 2001
Importance of Correlation in Determining Electrocatalytic Oxygen Evolution Activity on Cobalt Oxides journal September 2012
In-situ structure and catalytic mechanism of NiFe and CoFe layered double hydroxides during oxygen evolution journal May 2020
Predictive control of selective secondary alcohol oxidation of glycerol on NiOOH journal October 2022
Direct observation of reversible oxygen anion redox reaction in Li-rich manganese oxide, Li 2 MnO 3 , studied by soft X-ray absorption spectroscopy journal January 2016
Hydrogen transfer through different crystal phases of nickel oxy/hydroxide journal January 2018
Electrochemical biomass valorization on gold-metal oxide nanoscale heterojunctions enables investigation of both catalyst and reaction dynamics with operando surface-enhanced Raman spectroscopy journal January 2020
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points journal December 2000
Covalency Parameters in MnO, α‐MnS, and NiO journal February 1968
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Characterization of NiFe oxyhydroxide electrocatalysts by integrated electronic structure calculations and spectroelectrochemistry journal March 2017
Magnetic ordering and exchange effects in the antiferromagnetic solid solutions Mn x Ni 1 − x O journal June 1983
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Molecular adsorption on the surface of strongly correlated transition-metal oxides: A case study for CO/NiO(100) journal February 2004
Generalized Gradient Approximation Made Simple journal October 1996
Investigation of the Second Discharge Plateau of the β(III)-NiOOH/β(II)-Ni(OH)[sub 2] System journal January 1999
Evidence for Direct γ ‐ NiOOH ↔ β ‐ Ni (  OH  ) 2 Transitions during Electrochemical Cycling of the Nickel Hydroxide Electrode journal May 1998
Phase Stability of Nickel Hydroxides and Oxyhydroxides journal January 2006
The Synergistic Influences of OH[sup −] Concentration and Electrolyte Conductivity on the Redox Behavior of Ni(OH)[sub 2]/NiOOH journal January 2008
Understanding of Ni(OH)2/ NiOOH Irreversible Phase Transformations: Ni2O3H Impact on Alkaline Batteries journal January 2018
In Situ Raman Study of Amorphous and Crystalline Ni-Co Alloys for the Alkaline Oxygen Evolution Reaction journal January 2018
Phase Transformation in the Charge-Discharge Process and the Structural Analysis by Synchrotron XAFS and XRD for Nickel Hydroxide Electrode journal January 2008