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

Title: In situ solid-state electrochemistry of mass-selected ions at well-defined electrode–electrolyte interfaces

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
ORCiD logo [1];  [1];  [2];  [1]
  1. Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352,
  2. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352

Molecular-level understanding of electrochemical processes occurring at electrode-electrolyte interfaces (EEI) is key to the rational development of high-performance and sustainable electrochemical technologies. This article reports the development and first application of solid-state in situ electrochemical probes to study redox and catalytic processes occurring at well-defined EEI generated using soft-landing of mass- and charge-selected cluster ions (SL). In situ electrochemical probes with excellent mass transfer properties are fabricated using carefully-designed nanoporous ionic liquid membranes. SL enables deposition of pure active species that are not obtainable with other techniques onto electrode surfaces with precise control over charge state, composition, and kinetic energy. SL is, therefore, a unique tool for studying fundamental processes occurring at EEI. For the first time using an aprotic electrochemical probe, the effect of charge state (PMo12O403-/2-) and the contribution of building blocks of Keggin polyoxometalate (POM) clusters to redox processes are characterized by populating EEI with novel POM anions generated by electrospray ionization and gas phase dissociation. Additionally, a proton conducting electrochemical probe has been developed to characterize the reactive electrochemistry (oxygen reduction activity) of bare Pt clusters (Pt40 ~1 nm diameter), thus demonstrating the capability of the probe for studying reactions in controlled gaseous environments. The newly developed in situ electrochemical probes combined with ion SL provide a versatile method to characterize the EEI in solid-state redox systems and reactive electrochemistry at precisely-defined conditions. Furthermore, this capability will advance molecular-level understanding of processes occurring at EEI that are critical to many energy-related technologies.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Organization:
USDOE
Grant/Contract Number:
KC030202047327; AC05-76RL01830
OSTI ID:
1331219
Alternate ID(s):
OSTI ID: 1339859
Report Number(s):
PNNL-SA-118405
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 113 Journal Issue: 47; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (40)

Soft-landing preparative mass spectrometry journal January 2012
Structure, properties and reactivity of polyoxometalates: a theoretical perspective journal January 2012
Soft landing of bare PtRu nanoparticles for electrochemical reduction of oxygen journal January 2015
Overview of Electrochemical Energy Storage and Conversion book December 2015
Electronic structure and redox mechanism of dodecamolybdophosphate journal June 1986
Nanostructured Electrolytes for Stable Lithium Electrodeposition in Secondary Batteries journal October 2015
In Operando X-ray Absorption Fine Structure Studies of Polyoxometalate Molecular Cluster Batteries: Polyoxometalates as Electron Sponges journal March 2012
Differential capacitance of the double layer at the electrode/ionic liquids interface journal January 2010
Oxygen Reduction on Platinum Low-Index Single-Crystal Surfaces in Sulfuric Acid Solution: Rotating Ring-Pt(hkl) Disk Studies journal March 1995
Controlling the Charge State and Redox Properties of Supported Polyoxometalates via Soft Landing of Mass-Selected Ions journal October 2014
The electrode/electrolyte interface - a status report journal July 1993
Ionic liquids and their solid-state analogues as materials for energy generation and storage journal January 2016
Determination of the Diffusion Coefficient of Protons in Nafion Thin Films by ac -Electrogravimetry journal October 2013
Design and performance of a high-flux electrospray ionization source for ion soft landing journal January 2015
Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs journal March 2005
Soft landing of mass-selected gold clusters: Influence of ion and ligand on charge retention and reactivity journal February 2015
Monitoring potassium metal electrodeposition from an ionic liquid using in situ electrochemical-X-ray photoelectron spectroscopy journal June 2011
Cluster Size Controls Branching between Water and Hydrogen Peroxide Production in Electrochemical Oxygen Reduction at Pt n /ITO journal January 2015
Soft Landing of Complex Molecules on Surfaces journal July 2011
Electrospray Ion Beam Deposition of Clusters and Biomolecules journal April 2006
Carbon-based electrocatalysts for advanced energy conversion and storage journal August 2015
Molecular and Electronic Structures, Brönsted Basicities, and Lewis Acidities of Group VIB Transition Metal Oxide Clusters journal May 2006
Oxygen Reduction Reaction in Room Temperature Protic Ionic Liquids journal August 2013
Soft landing of bare nanoparticles with controlled size, composition, and morphology journal January 2015
Preparation of Surface Organometallic Catalysts by Gas-Phase Ligand Stripping and Reactive Landing of Mass-Selected Ions journal November 2010
In Situ Observation of the Electrochemical Lithiation of a Single SnO2 Nanowire Electrode journal December 2010
Probing Operating Electrochemical Interfaces by Photons and Neutrons journal September 2015
New Perspectives on the Charging Mechanisms of Supercapacitors journal April 2016
Low-Energy Ionic Collisions at Molecular Solids journal June 2012
Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena journal August 2001
Soft- and reactive landing of ions onto surfaces: Concepts and applications: CONCEPTS AND APPLICATIONS journal April 2015
Soft Landing of Complex Ions for Studies in Catalysis and Energy Storage journal September 2016
Decoupling hydrogen and oxygen evolution during electrolytic water splitting using an electron-coupled-proton buffer journal April 2013
Rational design of efficient electrode–electrolyte interfaces for solid-state energy storage using ion soft landing journal April 2016
Strong Effects of Cluster Size and Air Exposure on Oxygen Reduction and Carbon Oxidation Electrocatalysis by Size-Selected Pt n ( n ≤ 11) on Glassy Carbon Electrodes journal February 2013
Electrochemical Properties of Polyoxometalates as Electrocatalysts journal February 1998
Voltammetric Characterization of the Ferrocene|Ferrocenium and Cobaltocenium|Cobaltocene Redox Couples in RTILs journal February 2008
Oxygen Reduction Reaction in Ionic Liquids: The Addition of Protic Species journal April 2013
Characterization of the Ion Beam Focusing in a Mass Spectrometer Using an IonCCD™ Detector journal May 2011
Gas-Phase Fragmentation Pathways of Mixed Addenda Keggin Anions: PMo12-nWnO40 3– (n = 0–12) journal April 2015