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ZMB Member Kai S. Exner

ZMB Member
Kai S. Exner

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portrait photo of ZMB member Kai S. Exner
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Prof. Dr. Kai S. Exner

Faculty of Chemistry
University of Duisburg-Essen
Universitätsstr. 2
45141 Essen

Research Overview

  1. Drug delivery
  2. Functional nanoparticles
  3. Doxorubicin
  4. Multi-scale modeling

Selected Publications

    Journal articles

  • Wu, Tong; Dhaka, Kapil; Luo, Mengjia; Wang, Bingqing; Wang, Meng; Xi, Shibo; Zhang, Mingsheng; Huang, Fuqiang; Exner, Kai S.; Lum, Yanwei.
    CCooperative Active Sites on Ag2Pt3TiS6 for Enhanced Low-Temperature Ammonia Fuel Cell Electrocatalysis
    In: Angewandte Chemie International Edition Vol. 64 (2025) Nr. 6, e202418691 in press
  • Jangjooye Shaldehi, Tahereh; Rowshanzamir, Soosan; Exner, Kai S.; Viñes, Francesc; Illas, Francesc.
    Conventional versus Unconventional Oxygen Reduction Reaction Intermediates on Single Atom Catalysts
    In: ACS Applied Materials & Interfaces Vol. 17 (2025) Nr. 4, pp. 6450 - 6459
  • Usama, Muhammad; Razzaq, Samad; Exner, Kai.
    Design Criteria for Active and Selective Catalysts in the Nitrogen Oxidation Reaction
    In: ACS Physical Chemistry Au Vol. 5 (2025) Nr. 1, pp. 38 - 46
  • Exner, Kai S.
    Four Generations of Volcano Plots for the Oxygen Evolution Reaction : Beyond Proton-Coupled Electron Transfer Steps?
    In: Accounts of Chemical Research Vol. 57 (2024) Nr. 9, pp. 1336 - 1345
  • Razzaq, Samad; Exner, Kai.
    Why efficient bifunctional hydrogen electrocatalysis requires a change in the reaction mechanism
    In: iScience Vol. 27 (2024) Nr. 2, 108848
  • Cho, Junsic; Lim, Taejung; Kim, Haesol; Meng, Ling; Kim, Jinjong; Lee, Seunghoon; Lee, Jong Hoon; Jung, Gwan Yeong; Lee, Kug-Seung; Viñes, Francesc; Illas, Francesc; Exner, Kai; Joo, Sang Hoon; Choi, Chang Hyuck.
    Importance of broken geometric symmetry of single-atom Pt sites for efficient electrocatalysis
    In: Nature Communications Vol. 14 (2023) Nr. 1, 3233
  • Exner, Kai.
    Importance of the Walden Inversion for the Activity Volcano Plot of Oxygen Evolution
    In: Advanced Science Vol. 10 (2023) Nr. 36, 2305505
  • Razzaq, Samad; Exner, Kai.
    Materials Screening by the Descriptor Gmₐₓ(η) : The Free-Energy Span Model in Electrocatalysis
    In: ACS Catalysis Vol. 13 (2023) Nr. 3, pp. 1740 - 1758
  • Exner, Kai.
    On the mechanistic complexity of oxygen evolution : potential-dependent switching of the mechanism at the volcano apex
    In: Materials Horizons Vol. 10 (2023) Nr. 6, 2086
  • Spellauge, Maximilian; Tack, Meike; Streubel, René; Miertz, Matthias; Exner, Kai; Reichenberger, Sven; Barcikowski, Stephan; Huber, Heinz Paul; Ziefuß, Anna.
    Photomechanical Laser Fragmentation of IrO₂ Microparticles for the Synthesis of Active and Redox-Sensitive Colloidal Nanoclusters
    In: Small Vol. 19 (2023) Nr. 10, 2206485
  • Exner, Kai S.
    Steering Selectivity in the Four-Electron and Two-Electron Oxygen Reduction Reactions : On the Importance of the Volcano Slope
    In: ACS Physical Chemistry Au Vol. 3 (2023) Nr. 2, pp. 190 - 198
  • Lim, Taejung; Kim, Jae Hyung; Kim, Jinjong; Baek, Du San; Shin, Tae Joo; Jeong, Hu Young; Lee, Kug-Seung; Exner, Kai; Joo, Sang Hoon.
    General Efficacy of Atomically Dispersed Pt Catalysts for the Chlorine Evolution Reaction : Potential-Dependent Switching of the Kinetics and Mechanism
    In: ACS Catalysis Vol. 11 (2021) Nr. 19, pp. 12232 - 12246
  • Exner, Kai.
    The electrochemical-step asymmetry index
    In: MethodsX Vol. 8 (2021) 101590
  • Exner, Kai S.
    A Universal Descriptor for the Screening of Electrode Materials for Multiple-Electron Processes : Beyond the Thermodynamic Overpotential
    In: ACS Catalysis Vol. 10 (2020) Nr. 21, pp. 12607 - 12617
  • Exner, Kai S.
    Does a Thermoneutral Electrocatalyst Correspond to the Apex of a Volcano Plot for a Simple Two-Electron Process?
    In: Angewandte Chemie International Edition Vol. 59 (2020) Nr. 26, pp. 10236 - 10240
  • Exner, Kai S.
    Recent Progress in the Development of Screening Methods to Identify Electrode Materials for the Oxygen Evolution Reaction
    In: Advanced Functional Materials Vol. 30 (2020) Nr. 42, 2005060
  • Exner, Kai S.; Over, Herbert.
    Beyond the Rate-Determining Step in the Oxygen Evolution Reaction over a Single-Crystalline IrO₂(110) Model Electrode : Kinetic Scaling Relations
    In: ACS Catalysis Vol. 9 (2019) Nr. 8, pp. 6755 - 6765
  • Exner, Kai S.
    Is Thermodynamics a Good Descriptor for the Activity? : Re-Investigation of Sabatier's Principle by the Free Energy Diagram in Electrocatalysis
    In: ACS Catalysis Vol. 9 (2019) Nr. 6, pp. 5320 - 5329
  • Exner, Kai S.
    Recent Advancements Towards Closing the Gap between Electrocatalysis and Battery Science Communities : The Computational Lithium Electrode and Activity–Stability Volcano Plots
    In: ChemSusChem Vol. 12 (2019) Nr. 11, pp. 2330 - 2344
  • Exner, Kai S.; Sohrabnejad-Eskan, Iman; Over, Herbert.
    A Universal Approach to Determine the Free Energy Diagram of an Electrocatalytic Reaction
    In: ACS Catalysis Vol. 8 (2018) Nr. 3, pp. 1864 - 1879
  • Exner, Kai S.; Over, Herbert.
    Kinetics of Electrocatalytic Reactions from First-Principles : A Critical Comparison with the Ab Initio Thermodynamics Approach
    In: Accounts of Chemical Research Vol. 50 (2017) Nr. 5, pp. 1240 - 1247
  • Sohrabnejad-Eskan, Iman; Goryachev, Andrey; Exner, Kai S.; Kibler, Ludwig A.; Hensen, Emiel J.M.; Hofmann, Jan P.; Over, Herbert.
    Temperature-Dependent Kinetic Studies of the Chlorine Evolution Reaction over RuO₂(110) Model Electrodes
    In: ACS Catalysis Vol. 7 (2017) Nr. 4, pp. 2403 - 2411
  • Exner, Kai S.; Anton, Josef; Jacob, Timo; Over, Herbert.
    Full Kinetics from First Principles of the Chlorine Evolution Reaction over a RuO₂(110) Model Electrode
    In: Angewandte Chemie International Edition Vol. 55 (2016) Nr. 26, pp. 7501 - 7504
  • Exner, Kai S.; Anton, Josef; Jacob, Timo; Over, Herbert.
    Controlling selectivity in the chlorine evolution reaction over RuO₂-based catalysts
    In: Angewandte Chemie International Edition Vol. 53 (2014) Nr. 41, pp. 11032 - 11035