Search Results - "Mayrhofer, Karl J. J."

Importance and Challenges of Electrochemical in Situ Liquid Cell Electron Microscopy for Energy Conversion Research by Hodnik, Nejc, Dehm, Gerhard, Mayrhofer, Karl J. J

“…The foreseeable worldwide energy and environmental challenges demand renewable alternative sources, energy conversion, and storage technologies. Therefore,…”
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Oxygen Electrochemistry as a Cornerstone for Sustainable Energy Conversion by Katsounaros, Ioannis, Cherevko, Serhiy, Zeradjanin, Aleksandar R., Mayrhofer, Karl J. J.

“…Electrochemistry will play a vital role in creating sustainable energy solutions in the future, particularly for the conversion and storage of electrical into…”
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Molecular Insight in Structure and Activity of Highly Efficient, Low-Ir Ir–Ni Oxide Catalysts for Electrochemical Water Splitting (OER) by Reier, Tobias, Pawolek, Zarina, Cherevko, Serhiy, Bruns, Michael, Jones, Travis, Teschner, Detre, Selve, Sören, Bergmann, Arno, Nong, Hong Nhan, Schlögl, Robert, Mayrhofer, Karl J. J, Strasser, Peter

“…Mixed bimetallic oxides offer great opportunities for a systematic tuning of electrocatalytic activity and stability. Here, we demonstrate the power of this…”
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Stability of Fe-N-C Catalysts in Acidic Medium Studied by Operando Spectroscopy by Choi, Chang Hyuck, Baldizzone, Claudio, Grote, Jan-Philipp, Schuppert, Anna K., Jaouen, Frédéric, Mayrhofer, Karl J. J.

“…Fundamental understanding of non‐precious metal catalysts for the oxygen reduction reaction (ORR) is the nub for the successful replacement of noble Pt in fuel…”
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Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells by Göhl, Daniel, Garg, Aaron, Paciok, Paul, Mayrhofer, Karl J. J., Heggen, Marc, Shao-Horn, Yang, Dunin-Borkowski, Rafal E., Román-Leshkov, Yuriy, Ledendecker, Marc

“…Core–shell particles with earth-abundant cores represent an effective design strategy for improving the performance of noble metal catalysts, while…”
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Dissolution of Platinum: Limits for the Deployment of Electrochemical Energy Conversion? by Topalov, Angel A., Katsounaros, Ioannis, Auinger, Michael, Cherevko, Serhiy, Meier, Josef C., Klemm, Sebastian O., Mayrhofer, Karl J. J.

“…Platinum stability: Dissolution of Pt, which is one major degradation mechanism in, for example, hydrogen/air fuel cells, was monitored under potentiodynamic…”
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The Particle Size Effect on the Oxygen Reduction Reaction Activity of Pt Catalysts: Influence of Electrolyte and Relation to Single Crystal Models by Nesselberger, Markus, Ashton, Sean, Meier, Josef C, Katsounaros, Ioannis, Mayrhofer, Karl J. J, Arenz, Matthias

“…The influence of particle size on the oxygen reduction reaction (ORR) activity of Pt was examined in three different electrolytes: two acidic solutions, with…”
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Toward Highly Stable Electrocatalysts via Nanoparticle Pore Confinement by Galeano, Carolina, Meier, Josef C, Peinecke, Volker, Bongard, Hans, Katsounaros, Ioannis, Topalov, Angel A, Lu, Anhui, Mayrhofer, Karl J. J, Schüth, Ferdi

“…The durability of electrode materials is a limiting parameter for many electrochemical energy conversion systems. In particular, electrocatalysts for the…”
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Atomistic Insights into the Stability of Pt Single-Atom Electrocatalysts by Speck, Florian D, Paul, Michael T. Y, Ruiz-Zepeda, Francisco, Gatalo, Matija, Kim, Haesol, Kwon, Han Chang, Mayrhofer, Karl J. J, Choi, Minkee, Choi, Chang Hyuck, Hodnik, Nejc, Cherevko, Serhiy

“…Single-atom catalysts (SACs) have quickly emerged as a new class of catalytic materials. When confronted with classical carbon-supported nanoparticulated…”
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The effect of particle proximity on the oxygen reduction rate of size-selected platinum clusters by Nesselberger, Markus, Roefzaad, Melanie, Fayçal Hamou, R., Ulrich Biedermann, P., Schweinberger, Florian F., Kunz, Sebastian, Schloegl, Katrin, Wiberg, Gustav K. H., Ashton, Sean, Heiz, Ueli, Mayrhofer, Karl J. J., Arenz, Matthias

“…The diminished surface-area-normalized catalytic activity of highly dispersed Pt nanoparticles compared with bulk Pt is particularly intricate, and not yet…”
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Adsorbate‐Induced Surface Segregation for Core–Shell Nanocatalysts by Mayrhofer, Karl J. J., Juhart, Viktorija, Hartl, Katrin, Hanzlik, Marianne, Arenz, Matthias

“…Coming to the surface: The surface composition of carbon‐supported Pt3Co catalyst particles changes upon a CO‐annealing treatment. Platinum atoms segregate to…”
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Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces by Stamenkovic, Vojislav R, Markovic, Nenad M, Mun, Bongjin Simon, Arenz, Matthias, Mayrhofer, Karl J. J, Lucas, Christopher A, Wang, Guofeng, Ross, Philip N

“…One of the key objectives in fuel-cell technology is to improve and reduce Pt loading as the oxygen-reduction catalyst. Here, we show a fundamental…”
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CO2 Electroreduction on Silver Foams Modified by Ionic Liquids with Different Cation Side Chain Length by Parada, Walter A, Vasilyev, Dmitry V, Mayrhofer, Karl J. J, Katsounaros, Ioannis

“…Ionic liquids (ILs) are capable of tuning the kinetics of electroreduction processes by modifying a catalyst interface. In this work, a group of hydrophobic…”
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General Method for the Synthesis of Hollow Mesoporous Carbon Spheres with Tunable Textural Properties by Mezzavilla, Stefano, Baldizzone, Claudio, Mayrhofer, Karl J. J, Schüth, Ferdi

“…A versatile synthetic procedure to prepare hollow mesoporous carbon spheres (HMCS) is presented here. This approach is based on the deposition of a homogeneous…”
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Tuning the Electrocatalytic Performance of Ionic Liquid Modified Pt Catalysts for the Oxygen Reduction Reaction via Cationic Chain Engineering by Zhang, Gui-Rong, Wolker, Thomas, Sandbeck, Daniel J. S, Munoz, Macarena, Mayrhofer, Karl J. J, Cherevko, Serhiy, Etzold, Bastian J. M

“…Modifying Pt catalysts using hydrophobic ionic liquids (ILs) has been demonstrated to be a facile approach for boosting the performance of Pt catalysts for the…”
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The Common Intermediates of Oxygen Evolution and Dissolution Reactions during Water Electrolysis on Iridium by Kasian, Olga, Grote, Jan‐Philipp, Geiger, Simon, Cherevko, Serhiy, Mayrhofer, Karl J. J.

“…Understanding the pathways of catalyst degradation during the oxygen evolution reaction is a cornerstone in the development of efficient and stable…”
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Towards maximized utilization of iridium for the acidic oxygen evolution reaction by Ledendecker, Marc, Geiger, Simon, Hengge, Katharina, Lim, Joohyun, Cherevko, Serhiy, Mingers, Andrea M., Göhl, Daniel, Fortunato, Guilherme V., Jalalpoor, Daniel, Schüth, Ferdi, Scheu, Christina, Mayrhofer, Karl J. J.

“…The reduction in noble metal content for efficient oxygen evolution catalysis is a crucial aspect towards the large scale commercialisation of polymer…”
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Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst by Choi, Chang Hyuck, Kim, Minho, Kwon, Han Chang, Cho, Sung June, Yun, Seongho, Kim, Hee-Tak, Mayrhofer, Karl J. J., Kim, Hyungjun, Choi, Minkee

“…Maximum atom efficiency as well as distinct chemoselectivity is expected for electrocatalysis on atomically dispersed (or single site) metal centres, but its…”
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Carbon Monoxide as a Promoter of Atomically Dispersed Platinum Catalyst in Electrochemical Hydrogen Evolution Reaction by Kwon, Han Chang, Kim, Minho, Grote, Jan-Philipp, Cho, Sung June, Chung, Min Wook, Kim, Haesol, Won, Da Hye, Zeradjanin, Aleksandar R, Mayrhofer, Karl J. J, Choi, Minkee, Kim, Hyungjun, Choi, Chang Hyuck

“…Carbon monoxide is widely known to poison Pt during heterogeneous catalysis owing to its strong donor–acceptor binding ability. Herein, we report a…”
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Online Monitoring of Transition-Metal Dissolution from a High-Ni-Content Cathode Material by Wachs, Susanne J, Behling, Christopher, Ranninger, Johanna, Möller, Jonas, Mayrhofer, Karl J. J, Berkes, Balázs B

“…The dissolution of transition metals (TMs) from cathode materials and their deposition on the anode represents a serious degradation process and, with that, a…”
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