Ruud Kortlever

Ruud Kortlever
Delft University of Technology | TU · Department of Process and Energy (P&E)

Dr.

About

33
Publications
19,378
Reads
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3,960
Citations
Introduction
Dr. Ruud Kortlever is an assistant professor at Delft University of Technology (TU Delft) within the Large-Scale Energy Storage section of the Department of Process & Energy. After completing his PhD at Leiden University in 2015 and a postdoctoral stay at Caltech, Ruud returned to the Netherlands in January 2018 to start his independent career as assistant professor at Delft University of Technology. His group is interested in electrochemical conversions that are relevant for renewable fuel production and the electrification of the chemical industry. With the help of mechanistic insights and modelling his group contributes to solving contemporary energy problems by developing new electrocatalytic systems and devices.
Additional affiliations
January 2018 - present
Delft University of Technology
Position
  • Professor (Assistant)
February 2016 - December 2017
California Institute of Technology
Position
  • PostDoc Position
November 2015 - February 2016
Leiden University
Position
  • Guest researcher

Publications

Publications (33)
Article
Full-text available
The selective separation of ions is a major technological challenge having far-ranging impacts from product separation in electrochemical production of base chemicals from CO2 to water purification. In recent years, ion-selective electrochemical systems leveraging redox-materials emerged as an attractive platform based on their reversibility and re...
Article
Full-text available
The electrochemical CO2 reduction reaction (CO2RR) is important for a sustainable future. Key insights into the reaction pathways have been obtained by density functional theory (DFT) analysis, but so far, DFT has been unable to give an overall understanding of selectivity trends without important caveats. We show that an unconsidered parameter in...
Article
Copper is one of the most promising catalysts for the CO2 reduction reaction (CO2RR) due to its unique capability of producing multicarbon products in appreciable quantities. Most of the CO2RR research efforts have been directed towards the development of new electrocatalysts to either increase product selectivities or decrease overpotentials. In c...
Article
Full-text available
Direct electrochemical reduction of CO2 to C2 products such as ethylene is more efficient in alkaline media, but it suffers from parasitic loss of reactants due to (bi)carbonate formation. A two-step process where the CO2 is first electrochemically reduced to CO and subsequently converted to desired C2 products has the potential to overcome the lim...
Article
Full-text available
Both daily and seasonal fluctuations of renewable power sources will require large-scale energy storage technologies. A recently developed integrated battery and electrolyzer system, called battolyser, fulfills both time-scale requirements. Here, we develop a macroscopic COMSOL Multiphysics model to quantify the energetic efficiency of the battolys...
Article
Illumination of a voltage-biased plasmonic Ag cathode during CO2 reduction results in a suppression of the H2 evolution reaction while enhancing CO2 reduction. This effect has been shown to be photonic rather than thermal, but the exact plasmonic mechanism is unknown. Here, we conduct an in situ ATR-SEIRAS study of a sputtered thin film Ag cathode...
Article
Full-text available
Electrochemical CO2 reduction has received an increased amount of interest in the last decade as a promising avenue for storing renewable electricity in chemical bonds. Despite considerable progress on catalyst performance using nanostructured electrodes, the sensitivity of the reaction to process conditions has led to debate on the origin of the a...
Preprint
Full-text available
div> Electrochemical CO<sub>2</sub> reduction has received an increased amount of interest in the last decade as a promising avenue for storing renewable electricity in chemical bonds. Despite considerable progress on catalyst performance using nanostructured electrodes, the sensitivity of the reaction to process conditions has led to debate on th...
Article
Full-text available
The electrochemical reduction of CO2 to fuels or commodity chemicals is a reaction of high interest for closing the anthropogenic carbon cycle. The role of the electrolyte is of particular interest, as the interplay between the electrocatalytic surface and the electrolyte plays an important role in determining the outcome of the CO2 reduction react...
Article
Full-text available
Electrocatalytic CO_2 reduction to generate multicarbon products is of interest for applications in artificial photosynthetic schemes. This is a particularly attractive goal for CO_2 reduction by copper electrodes, where a broad range of hydrocarbon products can be generated but where selectivity for C–C coupled products relative to CH_4 and H_2 re...
Article
Alloy nanoparticles fulfill an important role in catalysis. Therefore, producing them in a simple and clean way is much desired. A promising alloy nanoparticle production method is cathodic corrosion, which generates particles by applying an AC voltage to an alloy electrode. However, this harsh AC potential program might affect the final elemental...
Article
Full-text available
Rotating disk electrodes (RDEs) are widely used in electrochemical characterization to analyze the mechanisms of various electrocatalytic reactions. RDE experiments often make use of or require collection and quantification of gaseous products. The combination of rotating parts and gaseous analytes makes the design of RDE cells that allow for heads...
Article
Full-text available
The development of active, cost-effective and stable oxygen-evolving catalysts is one of the major challenges for solar-to-fuel conversion towards sustainable energy generation. Iridium oxide exhibits the best available compromise between catalytic activity and stability in acid media, but it is prohibitively expensive for large-scale applications....
Data
Supplementary Figures 1-7, Supplementary Tables 1-3, Supplementary Note 1 and Supplementary References.
Article
A trisbipyridine ruthenium(II) photosensitizer (PS) was anchored to the lipid bilayer of liposomes together with a Ru-, Co-, or Ir-based water-oxidation catalysts in order to study the effect of liposomes on photocatalytic water oxidation in presence of Na2S2O8. The Ru-based and Co-based systems both showed O2 production upon light irradiation, whe...
Article
In trivalent chromium plating processes, the breakdown of useful electrolyte components or the formation of hazardous products, in particular Cr(VI), at the anode is obviously undesired. In this study, the oxidation reactions in trivalent chromium electrolytes with formate as complexing agent are investigated at platinum and at a catalytic mixed me...
Article
Full-text available
Copper is a unique electrocatalyst for CO2 reduction, since it is one of the few catalysts able to produce methane, ethylene and ethane from CO2 with decent faradaic efficiencies. Here we report on the design and synthesis of a new non-copper-containing catalyst able to reduce CO2 to C1 to C5 hydrocarbons. This catalyst was designed by combining a...
Article
Full-text available
Aqueous-phase electrochemical reduction of carbon dioxide requires an active, earth-abundant electrocatalyst, as well as highly efficient mass transport. Here we report the design of a porous hollow fibre copper electrode with a compact three-dimensional geometry, which provides a large area, three-phase boundary for gas-liquid reactions. The perfo...
Data
Copper hollow fiber employed as a working electrode. Applied potential is -0.4 V vs RHE.
Data
Supplementary Figures 1-10, Supplementary Tables 1-3 and Supplementary Methods
Article
Full-text available
The development of technologies for the recycling of carbon dioxide into carbon-containing fuels is one of the major challenges in sustainable energy research. Two of the main current limitations are the poor efficiency and fast deactivation of catalysts. Core-shell nanoparticles are promising candidates for enhancing challenging reactions. In this...
Article
Full-text available
The electrochemical reduction of CO2 has gained significant interest recently as it has the potential to trigger a sustainable solar-fuel-based economy. In this Perspective, we highlight several heterogeneous and molecular electrocatalysts for the reduction of CO2 and discuss the reaction pathways through which they form various products. Among tho...
Article
Full-text available
The electrochemical conversion of carbon dioxide and water into useful products is a major challenge in facilitating a closed carbon cycle. Here we report a cobalt protoporphyrin immobilized on a pyrolytic graphite electrode that reduces carbon dioxide in an aqueous acidic solution at relatively low overpotential (0.5 V), with an efficiency and sel...
Article
The electrochemical reduction of CO2 has attracted a significant interest recently, as it is a possible reaction for the storage of renewable energy. Here we report on the synthesis of PdxPt(100-x)/C nanoparticles and their electrocatalytic properties for the reduction of CO2 to formic acid, compared with their activity for the reverse oxidation of...
Article
Full-text available
The formation of ethylene in CO2 electroreduction over rough copper electrodes is often explained by the presence of specific surface crystal steps, edges and defects. We demonstrate that an identical electrode covered with copper nanoparticles can yield either predominantly ethylene or methane, depending on the electrolyte concentration and applie...
Article
Full-text available
The catalytic activity and hydrocarbon selectivity in electrochemical carbon dioxide (CO2) reduction on cuprous oxide (Cu2O) derived copper nanoparticles is discussed. Cuprous oxide films with [100], [110] and [111] orientation and variable thickness were electrodeposited by reduction of copper(ii) lactate on commercially available copper plates. A...
Article
Full-text available
The electrochemical reduction of CO2 on copper is an intensively studied reaction. However, there has not been much attention for CO2 reduction on copper in alkaline electrolytes, because this creates a carbonate buffer in which CO2 is converted in HCO3− and the pH of the electrolyte decreases. Here, we show that electrolytes with phosphate buffers...

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